Fluid Mechanics Simulators

Added Mass Simulator

Marine & Ocean Engineering

Added Mass Simulator: Accelerate a body through a fluid and it must move the surrounding fluid too, so it behaves as if it were heavier. This tool computes t…

Airfoil Lift Simulator — NACA Thin Airfoil Theory

Aerodynamics

Simulate airfoil lift with NACA 4-digit parameters. Real-time CL, CD, L/D calculations and angle-of-attack curves using thin airfoil theory.

Aerodynamic Drag Simulator — Drag Force & Terminal Velocity

Aerodynamics

Explore aerodynamic drag and terminal velocity with a real-time simulator. Adjust shape, mass, and air density to visualize the physics of flight.

Aerosol Deposition Simulator — Stokes Settling & Diffusion Calculator

Particles & Multiphase Flow

Adjust particle size, density, and temperature to calculate Stokes settling velocity, Brownian diffusion coefficient, Cunningham correction factor, and Stokes number in …

Aerosol Particle Dynamics Calculator

Particles & Multiphase Flow

Calculate aerosol particle dynamics: settling velocity, diffusion, Stokes number, aerodynamic diameter, and lung deposition fraction with this advanced tool.

Aircraft Performance Calculator

Aerodynamics

Calculate aircraft performance with our free online tool. Compute stall speed, cruise speed, rate of climb, and Breguet range using real-time ISA atmosphere models.

Breguet Range Equation Simulator

Aerodynamics

Breguet Range Equation Simulator: Compute how far a jet aircraft can fly on a single tank of fuel using the Breguet range equation. Adjust the cruise speed, …

Aircraft Take-Off Distance & V1/Vr Simulator

Aerodynamics

Change aircraft type, take-off weight, OAT, pressure altitude, headwind, flap setting and runway slope to see TORA, TODA, BFL and V1/Vr/V2 update in real time. Useful fo…

Airfoil Lift Calculator — CL, CD & L/D with Thin Airfoil Theory

Aerodynamics

Calculate lift, drag & L/D ratio for NACA airfoils. Adjust angle of attack, speed & wing geometry in real-time with this interactive airfoil calculator.

Airfoil (NACA 4-Digit) Simulator

Aerodynamics

Simulate NACA 4-digit airfoils in real time. Generate profiles, calculate lift/drag coefficients, pressure distribution, and lift curves instantly.

Archimedes Buoyancy Simulator

Fluid Statics & Surface Tension

Archimedes Buoyancy Simulator: calculate buoyancy forces by setting object density, volume, and fluid properties. Essential tool for hydrostatics and fluid mechanics engineering.

Atmospheric Boundary Layer Profile Calculator — Log Law & Power Law

Flow Fundamentals

Calculate wind speed at any height. Compare log law vs power law profiles for any terrain and reference wind speed. Visualize with interactive terrain sketch.

Baseball Pitch Magnus Force Simulator

Aerodynamics

Baseball pitch Magnus force simulator: adjust spin rate, speed, and axis angle to visualize ball trajectory curves and aerodynamic effects.

Bernoulli Theorem Applications Simulator

Flow Fundamentals

Explore Bernoulli's Principle Applications: Adjust upstream velocity, pipe diameter, and fluid density to visualize pressure distribution in a Venturi tube with diam…

Bernoulli's Theorem Pipe Flow Visualizer

Pipe Flow & Pumps

Visualize Bernoulli's theorem in a pipe in real time. Adjust pipe diameter, pressure, velocity & elevation to see dynamic fluid flow and energy conservation.

Bingham Plastic Fluid Simulator — Yield-Stress Non-Newtonian Fluid

Pipe Flow & Pumps

Simulate Bingham plastic yield-stress fluids in real-time. Evaluate shear stress, apparent viscosity, and pipe flow with adjustable parameters for non-Newtonian fluid analysis.

Blasius Boundary Layer Simulator — Flat-Plate δ and C_f

Aerodynamics

Blasius boundary layer simulator: computes laminar flat-plate δ_99, displacement and momentum thickness, and skin friction in real time from velocity, position, and viscosity.

Turbulent Boundary Layer Simulator — Flat Plate 1/7 Power Law

Aerodynamics

Turbulent boundary layer simulator for flat plates using 1/7 power law. Calculate δ, C_f, τ_w with variable velocity, viscosity, density. Compare laminar Blasius solution.

Flat Plate Boundary Layer Growth Simulator

Aerodynamics

Simulate boundary layer growth on a flat plate with our free online calculator. Visualize velocity profiles and calculate key parameters for your CAE projects.

Buoyancy & Stability Simulator — Metacentric Height GM Calculator

Fluid Statics & Surface Tension

Master buoyancy and stability with our interactive simulator. Adjust hull parameters, compute metacentric height (GM), and visualize the GZ curve in real time.

Buoyancy Calculator

Fluid Statics & Surface Tension

Buoyancy calculator for computing buoyant force and apparent weight. Interactive tool for Archimedes' principle, fluid mechanics, and object density analysis.' principle with this interactive buoyancy calculator.

Capillary Rise Simulator

Fluid Statics & Surface Tension

Capillary Rise Simulator: Reproduce capillary action — the way a liquid climbs up a narrow tube all on its own, driven only by surface tension. Change the tu…'s law: enter tube diameter, surface tension, contact angle and liquid density to get the capillary pressure, rise height, meniscus radius and liquid column mass in real time, with wetting and depression visualised.

Cavitation Npsh Margin Detail Simulator

Pipe Flow & Pumps

Evaluate pump NPSHa, margin, and cavitation risk from suction absolute pressure, vapor pressure, suction loss, and required NPSH.

Cavitation Number Simulator

Flow Fundamentals

Cavitation Number Simulator: A tool for computing the cavitation number sigma, a dimensionless index of how close a flowing liquid is to vaporising. Adjust t…

Centrifugal Pump Cavitation (NPSH) Simulator

Pipe Flow & Pumps

Calculate NPSH available and cavitation margin for a centrifugal pump from suction-side conditions.

Centrifugal Pump Curves Simulator — H-Q & Efficiency

Pipe Flow & Pumps

Simulate centrifugal pump curves by adjusting impeller, speed, and resistance. Visualize H-Q, efficiency, and system curves with operating point and BEP.

CFD Mesh Quality Metrics Calculator

CFD & Numerical Methods

Calculate CFD mesh quality metrics like aspect ratio, skewness, and orthogonality in real-time. Compare instantly against ANSYS Fluent, OpenFOAM, and Star-CCM+ guidelines.

Choked Flow Simulator — Critical Conditions and Mass Flow Rate in a Converging Nozzle

Compressible Flow

Choked flow simulator for converging nozzles: analyze sonic conditions, critical pressure ratio, and maximum mass flow rate in CAE design.

Aircraft Rate of Climb Simulator

Aerodynamics

Aircraft Rate of Climb Simulator: Calculate how fast an aircraft can gain altitude using the excess-power method. Adjust the weight, available engine power, …

Coanda Effect Simulator — Attachment Angle of a Wall-Attached Jet

Aerodynamics

Coanda effect simulator for wall-attached jets. Explore jet separation behavior by adjusting curvature parameter K=b/R. Interactive CFD tool for engineers.

Compressible Flow & Mach Number Calculator

Compressible Flow

Calculate Mach number and visualize compressible flow: isentropic relations, normal & oblique shocks. Adjust parameters in real-time.

Compressible Nozzle Area Mach Simulator

Compressible Flow

Evaluate isentropic nozzle area ratio, static pressure ratio, required area, and velocity from Mach number and gas properties.

Compressor Design Calculator — Isentropic Compression Simulator

Turbomachinery

Optimize compressor performance with our interactive calculator. Adjust inlet conditions, pressure ratio, and efficiency to compute key outputs like shaft power and specific work.

Compressor Polytropic Efficiency Simulator

Turbomachinery

Estimate compressor outlet temperature, specific work, and shaft power from pressure ratio, inlet temperature, gamma, and polytropic efficiency.

Compressor Surge Margin Map Simulator

Turbomachinery

Compressor surge margin map simulator for analyzing operating points, surge lines, and flow-pressure ratio effects on margin consumption.

Control Valve Cv Cavitation Simulator

Pipe Flow & Pumps

Control Valve Cv Cavitation Simulator: Calculate Cv, assess cavitation risk, and optimize valve performance using flow and pressure drop data.

Rayleigh–Bénard Convection Cells Simulator

Flow Fundamentals

Interactive Rayleigh–Bénard convection simulator: adjust Rayleigh number and aspect ratio to watch convection cells form in real time. Free online fluid dynamics tool.

Convection-Diffusion Equation Simulator (Numerical Stability)

CFD & Numerical Methods

Simulate 1D convection-diffusion. Compare central, upwind, and QUICK schemes against the analytical solution. Test numerical stability with our free online calculator.

Couette Flow Simulator — Viscous Flow Between Parallel Plates

Flow Fundamentals

Couette flow simulator for viscous flow analysis between parallel plates. Adjust speed, viscosity, and pressure gradient to calculate shear stress and flow rate in real time.

Cyclone Separator Cut Size Simulator

Particles & Multiphase Flow

Estimate cyclone cut size, pressure-drop tendency, and collection efficiency from inlet velocity, particle density, viscosity, and inlet width.

Darcy vs Fanning Friction Factor Simulator

Pipe Flow & Pumps

Darcy vs Fanning Friction Factor Simulator: To describe the same pipe friction, the Darcy and Fanning friction factors differ by exactly a factor of 4. Enter…

Drag & Lift Force Calculator — Sphere, Cylinder & Flat Plate

Aerodynamics

Calculate drag & lift forces, terminal velocity, and vortex frequency in real time. Interactive tool for spheres, cylinders, and flat plates using Reynolds-number-dependent Cd.

Drag Coefficient Calculator

Aerodynamics

Calculate drag force, Reynolds number, terminal velocity & power for any shape. Input fluid, velocity, and temperature. View interactive plots instantly.

Air Drag & Terminal Velocity Simulator

Aerodynamics

Simulate falling objects with air drag. Adjust mass, drag, and area in real-time. Explore skydiver to raindrop presets and key physics equations.

HVAC Duct Sizing Simulator — Rectangular Duct Pressure Drop

Pipe Flow & Pumps

HVAC duct sizing simulator. Computes hydraulic diameter, mean velocity, friction factor (Swamee-Jain), unit-length and total pressure drop for rectangular ducts in real time.

Viscosity & Rheology Simulator — Newtonian and Non-Newtonian Fluid Models

Flow Fundamentals

Visualize viscosity curves & Couette flow for Newtonian and non-Newtonian fluids in real time. Explore rheology with temperature effects.

Airship Helium Buoyancy & Lift Simulator

Aerodynamics

Explore the buoyancy and useful payload of helium-filled lighter-than-air (LTA) vehicles — Zeppelin rigid airships, Goodyear blimps and stratospheric HAPS — with an ISA …

Pipe Entrance Region & Development Length Simulator

Pipe Flow & Pumps

Pipe Entrance Region & Development Length Simulator: A tool to calculate the entrance length — the development length Le — over which a velocity profile beco…

Ergun Equation Simulator — Pressure Drop in Packed Beds

Particles & Multiphase Flow

Simulate pressure drop in packed beds using the Ergun equation. Calculate dP/L, particle Reynolds number, and fluidization velocity for spherical particles in real time.

Fan Curve & System Curve Calculator

Turbomachinery

Plot fan and system curves in real time. Automatically calculate the operating point, efficiency, and shaft power using affinity laws.

Fanno Flow Simulator

Compressible Flow

Use this page to relate representative assumptions to flow rate, pressure loss, and hydraulic margin before moving into the adjacent engineering checks.

Fanno Flow Simulator — Compressible Duct Flow with Friction

Compressible Flow

Simulate adiabatic compressible duct flow with friction. Compute exit Mach, T and P ratios and choking length 4fL*/D on the Fanno line in real time.

Filtration Pressure & Filter Media Resistance Calculator

Particles & Multiphase Flow

Filtration pressure and filter media resistance calculator using Darcy's law and Kozeny-Carman equation. Calculate pressure drop and cake resistance in real time.'s law and the Kozeny-Carman & Ruth equations.

Fire Sprinkler Coverage & NFPA 13 Design Simulator

Pipe Flow & Pumps

Fire Sprinkler Coverage & NFPA 13 Design Simulator: Size a wet-pipe sprinkler system to NFPA 13 in real time. Pick the hazard class, ceiling height, head spa…

Flow Around a Cylinder

Aerodynamics

Visualize potential flow, Karman vortex shedding, and Magnus effect. Calculate lift, drag, and vortex frequency in real-time with streamfunction theory.

Flow Meter Design

Pipe Flow & Pumps

Design ISO 5167 orifice & Venturi flow meters. Compute flow rate Q from ΔP, Cd, and beta ratio. View real-time curves and calculate permanent pressure loss.

Flow Meter Calculator — Orifice, Venturi, Pitot Tube & Electromagnetic

Pipe Flow & Pumps

Compare orifice, venturi, pitot tube & electromagnetic flow meters. Input fluid, pipe size & pressure for instant volumetric flow calculations.

Journal Bearing Simulator — Reynolds Equation & Sommerfeld Number

Flow Fundamentals

Analyze hydrodynamic journal bearings with a simulator using the Reynolds equation. Compute pressure, film thickness, and the Sommerfeld number for bearing design.

Bernoulli's Theorem Simulator — Pipe Flow Pressure & Velocity

Pipe Flow & Pumps

Bernoulli's equation through visualization of pressure, velocity, and head in a pipe. Intuitively understand the fundamentals of fluid dynamics, including Venturi tubes, Pitot tubes, and wing lift.

Navier-Stokes Flow Visualization

CFD & Numerical Methods

Visualize 2D fluid dynamics in real-time. Adjust Reynolds number and flow type to see velocity, vorticity, and streamlines instantly in your browser.

Water Hammer Pressure Surge Calculator

Pipe Flow & Pumps

Calculate water hammer pressure surge from rapid valve closure. Input pipe specs, flow velocity & closure time to determine safe operating limits.

Jet Pump (Ejector) Simulator — Entrainment Ratio, Pressure & Efficiency Calculator

Pipe Flow & Pumps

Visualize ejector operation in real time. Adjust motive pressure, flow rate, and suction conditions to instantly calculate performance metrics like entrainment ratio.

Pump & Fan Performance Curve Simulator

Pipe Flow & Pumps

Simulate pump & fan performance curves. Overlay multi-speed H-Q curves, find operating points, and evaluate NPSH with this CAE tool.

Fluid Pressure & Buoyancy Simulator

Fluid Statics & Surface Tension

Simulate hydrostatic pressure and buoyancy forces with adjustable fluid density and depth. Explore Pascal's principle and floating/sinking mechanics for fluid mechanics engineering.'s principle. Adjust water depth, fluid density, and object density …'s law with this interactive simulator. Adjust depth, density, and objects to visualize floating and sinking.

Pump Operating Point Calculator — H-Q Curve & System Curve

Pipe Flow & Pumps

Visualize pump and system curves to find the operating point. Real-time calculation for single or parallel pumps. Optimize your system design instantly.

SPH Fluid Simulator — Particle-Based Liquid Dynamics

CFD & Numerical Methods

Interactive 2D fluid simulator using SPH. Adjust viscosity, see turbulence, and add particles in real-time. Explore fluid dynamics hands-on.

Fluid Statics Hydrostatic Pressure & Buoyancy Calculator

Fluid Statics & Surface Tension

Explore hydrostatic pressure and buoyancy with an interactive simulator. Choose fluid, shape, and density to compute forces and see objects float or sink.

Fluid Viscosity Simulator — Newtonian & Non-Newtonian Rheology

Flow Fundamentals

Fluid Viscosity & Non-Newtonian Flow Calculator: Calculate viscosity, shear stress, and Reynolds number for Newtonian and non-Newtonian fluids (power-law, Bi…

Fluid Vortex Simulator — Free, Forced & Rankine Vortex Velocity and Pressure

Flow Fundamentals

Visualize and adjust free, forced, and Rankine vortex flows. Explore velocity profiles by changing circulation, core radius, and angular velocity in this fluid dynamics simulator.

Fluidized Bed Simulator — Minimum Fluidization Velocity & Pressure Drop

Particles & Multiphase Flow

Fluidized bed simulator. Input particle diameter, density and viscosity to calculate Archimedes number, Umf and terminal velocity Ut in real time via Ergun.

Free Fall & Terminal Velocity Simulator

Aerodynamics

Simulate free fall with air drag. Vary mass, drag, and area. Compare vacuum vs. air fall, learn terminal velocity, and see numerical integration results.

Froude Number Simulator — Subcritical and Supercritical Open Channel Flow

Open-Channel Hydraulics

Froude number simulator: real-time Fr = V / sqrt(g y) classification of open channel flow into subcritical, critical and supercritical regimes from V, y, q and g.

Fuel Injection Spray Cone Angle & SMD Simulator

Particles & Multiphase Flow

Fuel Injection Spray Cone Angle & SMD Simulator: Design fuel-spray formation for diesel common-rail, GDI and port-injection injectors. Adjust injection press…

Gas Dynamics & Compressible Flow Calculator

Compressible Flow

Calculate isentropic, shock, Rayleigh & Fanno flow parameters in real-time. Input Mach number & specific heat ratio for compressible gas dynamics.

Natural Gas Pipeline Throughput AGA 10 / Weymouth Simulator

Pipe Flow & Pumps

Natural Gas Pipeline Throughput AGA 10 / Weymouth Simulator: Estimate the capacity of high-pressure long-distance natural-gas trunk lines. As you adjust insi…

Glider Polar Curve & MacCready Speed Simulator

Aerodynamics

Calculate glider polar curve, best glide speed, and MacCready optimal speed in real-time. Adjust thermal strength and wind with this free online simulator from NovaSolver.

Hagen-Poiseuille Flow Simulator — Laminar Pipe Flow

Pipe Flow & Pumps

Hagen-Poiseuille flow simulator for laminar pipe flow analysis. Visualize velocity profiles and volume flow rate using R^4 pressure drop relationship—interactive engineering tool.

Harbor Resonance & Natural Period Calculator (Open/Closed Boundary)

Marine & Ocean Engineering

Calculate harbor resonance periods & Helmholtz frequency for open/closed basins. Visualize tsunami wave oscillations with real-time tools and formulas.

HVAC Duct Pressure Drop ASHRAE Simulator

Pipe Flow & Pumps

Evaluate the friction loss, fitting loss, total pressure drop, and fan power of an HVAC air duct against the ASHRAE standard.

Hydraulic Diameter Simulator — Non-Circular Ducts

Pipe Flow & Pumps

Hydraulic Diameter Simulator — Non-Circular Ducts: Compute the hydraulic diameter of rectangular ducts, annular passages and square ducts. Change the cross-s…

Hydraulic Jump Simulator

Open-Channel Hydraulics

Visualize hydraulic jumps in real time. Compute Froude numbers, energy loss, and jump efficiency interactively with this open-channel simulator.

Hydraulic Ram Pump Simulator — Water Hammer Cycle & Efficiency

Pipe Flow & Pumps

Adjust pipe length, diameter, flow velocity, and valve closure time to calculate maximum water hammer pressure, pressure wave speed, and critical closure time using the …

Hydrostatic Pressure Simulator

Fluid Statics & Surface Tension

Hydrostatic pressure simulator for engineers: calculate gauge and absolute pressure with fluid depth inputs, force computation on submerged surfaces.

Isentropic Flow Calculator

Compressible Flow

Calculate isentropic flow ratios and normal shock properties instantly. Input Mach number and specific heat ratio for pressure, temperature, density, and area ratios.

ISS Microgravity Marangoni Convection Simulator

Fluid Statics & Surface Tension

In the microgravity environment of the International Space Station (ISS), buoyancy convection disappears and Marangoni convection — driven by surface-tension gradients —…

Jet Impact Force Simulator

Compressible Flow

Jet Impact Force Simulator: Calculate the force produced when a fluid jet from a nozzle strikes a flat plate or a curved vane. Change the nozzle diameter, je…

Jet Mixing

Flow Fundamentals

Jet Mixing: Simulate velocity and temperature profile development of free and impinging jets. Adjust exit velocity, nozzle diameter, and temperature excess t…'s free online tool. Ideal for engineers and students in fluid dynamics and HVAC design.

Karman Vortex Simulator — Strouhal Number and Lock-In

Aerodynamics

Karman vortex simulator: real-time fs = St*V/D for cylinder shedding. Reynolds number, fs/fn ratio and lock-in detection for VIV in bridges, stacks and risers.

Knudsen Number Simulator — Flow Regimes for Rarefied Gases

Flow Fundamentals

Knudsen Number Simulator for rarefied gas flow regime classification. Calculate mean free path and Kn to determine continuum, slip, transitional, or free-molecular flow.

Lava Lamp Simulator — Thermal Buoyancy & Natural Convection Physics

Flow Fundamentals

Lava Lamp Simulator: Physics-accurate thermal convection modeling using Archimedes' principle and buoyancy calculations for engineering education.' principle, thermal expansion, and Rayleigh-Bénard convection with interactive controls.

Lift-Induced Drag Simulator — Wingtip Vortices and L/D Ratio

Aerodynamics

Lift-induced drag simulator: real-time induced drag, total drag, L/D ratio and K-factor from lift coefficient, aspect ratio, Oswald efficiency and parasite drag.

Liquid Pour Simulator — Interactive SPH Particle Fluid

Flow Fundamentals

Interactive SPH-based liquid pour simulator. Choose container shape, adjust gravity and viscosity, watch particles splash and settle in real time. Free CAE fluid dynamics tool.

Mach Cone Simulator — Sonic Boom from Supersonic Flight

Aerodynamics

Mach Cone Simulator visualizes supersonic shock waves and sonic booms. Compute Mach angle, cone reach, and boom delay by varying Mach number and flight altitude for aerospace engineering analysis.

Mach Number Calculator — Isentropic Flow & Normal Shock Relations

Compressible Flow

Calculate Mach number and heat capacity ratio to instantly compute isentropic flow and normal shock conditions. Visualize subsonic to hypersonic results.

Marine Propeller Wageningen B-Series BP-δ Simulator

Marine & Ocean Engineering

Preliminary design tool for marine propellers based on the MARIN Wageningen B-Series open-water tests.

Ship Metacentric Height Stability Simulator

Marine & Ocean Engineering

Ship Metacentric Height Stability Simulator focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend that matte…

Pipe Minor Loss Simulator

Pipe Flow & Pumps

Compute minor (local) pressure losses across valves, bends and fittings from K-factors and flow velocity.

Pipe Fitting Minor Loss Simulator — K-Factor Method

Pipe Flow & Pumps

Pipe Fitting Minor Loss Simulator using K-Factor method to calculate pressure drop, head loss, and equivalent length for elbows, valves, tees in piping systems.

Mixing Calculator — Mass, Volume & Molar Concentration

Flow Fundamentals

Calculate mass, volume & molar concentration for 2–3 fluid mixtures. Get dilution factors, flow rates, and target concentrations instantly.

Moody Diagram Simulator — Pipe Friction Factor

Pipe Flow & Pumps

Moody diagram simulator: real-time pipe friction factor from Reynolds number and relative roughness with Swamee-Jain. Computes pressure drop and head loss via Darcy-Weisbach.

2D Navier-Stokes Flow Simulator

CFD & Numerical Methods

2D Navier-Stokes CFD simulator for lid-driven cavity flow. Adjust Reynolds number and grid resolution to analyze vorticity contours and streamlines.

Normal Shock Relations Simulator — Compressible Flow

Compressible Flow

Normal Shock Relations Simulator for compressible flow analysis. Visualize Rankine-Hugoniot relations across supersonic shocks using interactive Mach number and thermodynamic property adjustments.

Convergent-Divergent Nozzle (De Laval) Design Calculator

Compressible Flow

Calculate isentropic flow for a De Laval nozzle. Set Mach number, throat area, and stagnation conditions to instantly get pressure and temperature distributions.

Isentropic Nozzle Flow Calculator

Compressible Flow

Interactive isentropic nozzle flow calculator. Compute Mach number, area ratio A/A*, pressure and temperature ratios, and normal shock relations for compressible gas dynamics.

NPSH Simulator — Pump Cavitation Margin Assessment

Aerodynamics

NPSH simulator for pump cavitation. Computes available NPSH from atmospheric pressure, vapor pressure, suction lift, and pipe losses, and shows the margin against required NPSH.

Nusselt Correlation Simulator — Dittus-Boelter Correlation for Pipe Flow

Pipe Flow & Pumps

Dittus-Boelert correlation simulator for turbulent pipe flow. Calculate Nusselt number, heat transfer coefficient, and thermal boundary layer from Reynolds and Prandtl numbers.

Oblique Shock Wave Simulator — θ-β-M Relation

Compressible Flow

Oblique shock wave simulator using θ-β-M relation for supersonic flow analysis. Adjust Mach number, shock angle, and pressure to predict flow deflection and downstream conditions.

Ocean Wave Simulator — Dispersion Relation, Particle Orbits

Marine & Ocean Engineering

Explore wave physics with an interactive ocean wave simulator. Adjust parameters to visualize wave profiles, particle orbits, and the dispersion relation.

Open Channel Flow Calculator

Open-Channel Hydraulics

Design open channels using Manning's equation. Visualize cross-sections and real-time flow curves with hydraulic calculations.

Orifice Plate Flow Meter Design Calculator

Pipe Flow & Pumps

ISO 5167 orifice plate flow meter calculator. Input pipe size, beta ratio, differential pressure & fluid to compute discharge coefficient (Cd) and flow rate instantly.

Pipe Bend Thrust Force Simulator

Pipe Flow & Pumps

A pipe elbow carries a large thrust force because it redirects the fluid's momentum.

Pipe Flow Pressure Drop Calculator (Moody Chart)

Pipe Flow & Pumps

Calculate pressure drop in pipes with our free Moody chart calculator. Ideal for engineers and students in fluid mechanics. Fast, accurate, and easy to use.

Pipe Network Hardy Cross Simulator

Pipe Flow & Pumps

Pipe Network Hardy Cross Simulator: Explore the Hardy Cross method, the classic iterative technique for finding the flow distribution in a looped pipe networ…

Pipe Network Analysis

Pipe Flow & Pumps

Master the Hardy Cross method for pipe networks. Adjust parameters like flow and roughness to analyze a 3-loop, 8-pipe system and instantly see converged results.

Pitot Tube Velocity Simulator

Pipe Flow & Pumps

Free pitot tube calculator: find flow velocity, volumetric and mass flow, Reynolds number and dynamic pressure from the total-vs-static differential pressure using Bernoulli's equation. Air and water presets, pitot coefficient and duct diameter.

Potential Flow Around Cylinder Simulator

Flow Fundamentals

Visualize 2D potential flow around a cylinder. Explore streamlines, pressure maps, and the Magnus effect with interactive simulations and Cp plots.

Power-Law Fluid Simulator — Ostwald-de Waele Non-Newtonian Model

Flow Fundamentals

Real-time power-law fluid simulator (Ostwald-de Waele model) computing shear stress, apparent viscosity and pipe Reynolds for shear-thinning, Newtonian and shear-thickening fluids.

Prandtl-Glauert Simulator — Subsonic Compressibility Correction

Aerodynamics

Prandtl-Glauert compressibility correction simulator for subsonic airfoil aerodynamics. Visualize pressure and lift coefficient scaling with Mach number and gamma adjustments.

Prandtl-Meyer Expansion Simulator — Compressible Flow

Compressible Flow

Prandtl-Meyer simulator: compute the turning angle, nu function, downstream pressure and temperature ratio of an isentropic supersonic expansion fan in real time.

Pipe Pressure Drop Calculator (Darcy-Weisbach)

Pipe Flow & Pumps

Calculate pipe pressure drop instantly. Input diameter, length, flow rate & fluid to get Reynolds number, friction factor, and major/minor losses.

Valve Pressure Drop Calculator

Pipe Flow & Pumps

Calculate valve pressure drop instantly. Input valve type, flow rate, density, and pipe diameter. Get real-time results and combine up to 6 components.

Pipe Pressure Drop Calculator

Pipe Flow & Pumps

Calculate pipe pressure drop using Darcy-Weisbach & Colebrook-White. Includes K-factors for fittings, a real-time Moody diagram, and iterative friction solver.

Pressure Relief Valve Sizing (API 520)

Pipe Flow & Pumps

Calculate required orifice area and select the correct API letter designation for pressure relief valves (PRVs) per API 520 standards for gas, vapor, or liquid service.

Propeller Actuator-Disk Simulator

Aerodynamics

A tool for actuator-disk theory (Froude momentum theory), which models a propeller as an infinitely thin disk.

Marine Propeller Cavitation (Thoma + Burrill) Simulator

Marine & Ocean Engineering

Marine Propeller Cavitation (Thoma + Burrill) Simulator: Evaluate the cavitation behaviour of a marine propeller from ship speed, RPS, diameter and expanded …

Pump Affinity Laws Simulator (Centrifugal Pump Scaling)

Pipe Flow & Pumps

Explore pump affinity laws with our interactive simulator. Visualize how flow, head, and power scale with speed to quantify VFD energy savings in pumping systems.

Pump Cavitation & NPSH Calculator

Pipe Flow & Pumps

Calculate NPSH available and analyze pump cavitation risk. Use our tool to input suction head, flow, pipe losses, and fluid temperature for system curves.

Centrifugal Pump Design Calculator — H-Q Curve & Operating Point

Pipe Flow & Pumps

Real-time centrifugal pump analysis: instantly determine operating flow rate, shaft power, and specific speed from H-Q and system curve intersection.

Pump Selection · System Curve · Operating Point Calculator

Pipe Flow & Pumps

Learn to fit a pump curve, plot the system curve, and find the operating point. Includes calculations for efficiency, power, NPSH, and affinity laws.

Pump Specific Speed Simulator

Pipe Flow & Pumps

Pump specific speed simulator: calculate Ns from flow, head, and speed to optimize impeller shape design for engineers and fluid machinery professionals.'s duty (flow, total head, speed and number of stages) and identify the optimum imp…'s duty (flow, total head, speed and number of stages) and identify the optimum imp…

Pump Operating Point Simulator — Intersection of Pump and System Curves

Pipe Flow & Pumps

Find the pump operating point at the intersection of pump curve H=H0-kp Q^2 and system curve H=Hstatic+ks Q^2. Live flow Q, head H, hydraulic power, shaft power.

Rayleigh Flow Simulator

Compressible Flow

Rayleigh Flow Simulator compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

Rayleigh Flow Simulator — Compressible Duct Flow with Heating

Pipe Flow & Pumps

Simulate frictionless compressible duct flow with heat addition. Compute exit Mach, total temperature and pressure ratios on the Rayleigh line in real time.

Reynolds Number Calculator & Flow Regime Map

Flow Fundamentals

Interactive Reynolds number calculator with real-time flow regime map. Adjust velocity, length, and fluid properties to visualize laminar, transition, and turbulent flow regions.

Reynolds Transport Theorem Simulator — Control Volume Analysis

Flow Fundamentals

Reynolds Transport Theorem — Control Volume Analyzer: Perform control volume analysis for converging nozzles, 90° pipe bends, and expanding ducts. Calculate …

Richardson Number Simulator — Stability of Stratified Flow

Flow Fundamentals

Richardson number simulator. Compute Ri = g·β·ΔT·L/V² for stratified flow in real time, with Brunt-Vaisala frequency, mixing limit and stability at Ri=0.25, 1.

Rotameter (Variable-Area Flowmeter) Simulator

Pipe Flow & Pumps

A tool to compute the flow rate of a "rotameter" — a float inside a tapered tube.

Sedimentation Velocity & Stokes' Law Calculator

Particles & Multiphase Flow

Real-time calculation of terminal velocity from particle diameter, density, and fluid viscosity. Automatically determines Stokes/Allen/Newton regime.

Terminal Settling Velocity Simulator — Sphere Drag and Reynolds Regimes

Aerodynamics

Iteratively compute the terminal settling velocity of a spherical particle. Compare Stokes, intermediate and Newton drag regimes by sweeping diameter and viscosity.

Ship Resistance & Hull Speed Calculator

Marine & Ocean Engineering

Calculate ship resistance, power & fuel use with the Holtrop-Menon method. Real-time hull speed calculator for naval architects & engineers.

Ship Stability & Metacentric Height Calculator

Marine & Ocean Engineering

Real-time KB, BM, GM and GZ righting lever curve calculation for box barges and ship-form hulls. IMO A.749 stability criteria automatic assessment with cross-section visualization.

Shock Tube Simulator

Compressible Flow

Compute exact 1D Riemann solutions for shock tubes. Visualize pressure, density, and velocity profiles across shock waves, contact discontinuities, and rarefactions.

Siphon Flow Simulator

Pipe Flow & Pumps

Analyse a siphon that carries liquid up and over a point higher than the upper surface, with no pump.

Sluice Gate Flow Simulator

Open-Channel Hydraulics

Sluice Gate Flow Simulator: Calculate the free flow that shoots out from beneath a flat vertical gate (a sluice gate) set across a channel. Adjust the gate o…

Sphere Drag Coefficient Simulator — C_D vs Reynolds Number

Aerodynamics

Sphere drag coefficient simulator: compute C_D vs Reynolds number across Stokes, Newton, and supercritical flow regimes. Terminal velocity calculator.

Strouhal Number & Vortex Shedding Simulator — Karman Vortices and Lock-on

Aerodynamics

Predict Karman vortex shedding frequency and lock-on resonance using Strouhal number calculator. CFD simulation for cylinder flow analysis by Reynolds number.

Sudden Expansion Loss Simulator — Borda-Carnot

Pipe Flow & Pumps

Calculate the energy loss that occurs at a "sudden expansion" where a pipe widens abruptly.

Surface Tension Simulator — Capillary Rise, Contact Angle & Bubble Pressure

Fluid Statics & Surface Tension

Compute capillary rise, Laplace pressure and Bond number from surface tension, radius and contact angle. Compare water, ethanol, mercury and liquid metals.

Surge Tank Oscillation Simulator

Pipe Flow & Pumps

Surge Tank Oscillation Simulator: Analyse the water-level oscillation of a surge tank (surge chamber) on a hydropower headrace tunnel. Adjust the tunnel leng…

Swimming Drag & Power Calculator

Aerodynamics

Compute hydrodynamic drag, propulsion power, Reynolds number and 100m time from speed, body cross-section, drag coefficient and stroke. Real-time interactive simulator.

Tank Drain Time Simulator

Flow Fundamentals

Tank Drain Time Simulator focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend that matters next.

Tunnel Fire CFD Ventilation Critical Velocity Simulator

Pipe Flow & Pumps

Tunnel Fire CFD Ventilation Critical Velocity Simulator: Compute the critical velocity V_c — the minimum upstream airflow that prevents smoke backlayering in…

Road Tunnel Jet Fan Ventilation Simulator

Pipe Flow & Pumps

Road Tunnel Jet Fan Ventilation Simulator: Design longitudinal (jet fan) ventilation for road tunnels. Change tunnel length, cross-section, traffic density a…

Tunnel Ventilation Piston Effect Simulator

Pipe Flow & Pumps

Tunnel Ventilation Piston Effect Simulator: Compute piston-effect induced air velocity, outlet CO concentration, required jet-fan power and fire critical vel…

Turbine Blade Aerodynamics — NACA Airfoil Lift & Drag

Aerodynamics

Turbine Blade Cooling Analysis: Adjust hot gas temperature, film cooling effectiveness, coolant air temperature, heat-transfer coefficients and wall thicknes…

Turbomachinery Velocity Triangle Simulator — Centrifugal Pump & Turbine

Pipe Flow & Pumps

Turbomachinery Velocity Triangle Analyzer: Manipulate impeller inlet/outlet conditions (peripheral velocity U, axial velocity Cm, inlet angle α₁, relative ex…'s work equation.

Turbulence Model Selection Guide & y+ Calculator

CFD & Numerical Methods

Compare k-ε, k-ω SST, Spalart-Allmaras & LES models. Use our y⁺ calculator for first-cell height, friction velocity, and inlet turbulence boundary conditions.

Two-Phase Flow Simulator (Gas-Liquid)

Particles & Multiphase Flow

Identify gas-liquid flow patterns and calculate pressure drop with the Baker chart and Lockhart-Martinelli method in this CAE simulation guide.

U-Tube Manometer Simulator — Differential Pressure Measurement

Pipe Flow & Pumps

The U-tube manometer simulator computes the differential pressure between two points in a pipe from the height difference of a heavy manometer fluid column in real time.

Valve Sizing & Cv Flow Coefficient Calculator

Pipe Flow & Pumps

Calculate Cv and Kv for valve sizing of liquids and gases. Use ISA/IEC formulas for choked flow detection, pressure curves, and standard valve selection.

Vehicle Aerodynamic CD & Rear Wing Downforce Simulator

Aerodynamics

Hands-on tool for rear-wing design on F1, LMP1 and sports cars.

Venturi Meter Simulator

Pipe Flow & Pumps

Venturi Meter Simulator: Design a Venturi meter, which gently contracts a pipe to create a pressure drop and measures the volumetric flow from that drop. Adj…

Vortex Formation Simulator — Interactive Fluid Vortex Visualization

Aerodynamics

Explore vortex dynamics with an interactive fluid simulator. Visualize Rankine and Karman vortex structures using particle tracers. Click and drag to create.

Wake of Bluff Bodies Simulator — C_D and Strouhal Number

Aerodynamics

Simulate wakes of circular, square, teardrop bodies. Calculate drag coefficient C_D, Strouhal number, vortex shedding frequency in real time.

Water Hammer Calculator — Joukowsky Surge Pressure in Pipelines

Pipe Flow & Pumps

Calculate surge pressure & wave speed for water hammer analysis. Use the Joukowsky equation, detect valve closure type, and view pressure charts.

Tank Draining Simulator — Torricelli's Law

Pipe Flow & Pumps

Tank Draining Simulator using Torricelli's law. Vary the cross-section, orifice area, and discharge coefficient.

Wave Diffraction in Harbors (Sommerfeld Theory)

Marine & Ocean Engineering

Visualize harbor wave heights and energy distribution using Sommerfeld theory for breakwater gaps and semi-infinite barriers. Real-time K_D calculations.

Ocean Wave Spectrum Simulator

Marine & Ocean Engineering

Calculate sea wave spectra (JONSWAP, Pierson-Moskowitz) in real-time. Determine significant wave height, max wave height, and spectral moments with our online tool.

Wave Tank Simulator — 2D Wave Equation, Interference & Diffraction

Marine & Ocean Engineering

Simulate 2D wave physics in real time. Click to add sources and observe interference, diffraction, and reflection with this interactive finite difference solver.

Weber Number Simulator — Droplet Inertia vs Surface Tension

Flow Fundamentals

Weber Number Simulator: compute droplet inertia vs surface tension in real-time for spray atomization and breakup analysis. Predict droplet regimes and critical velocity.

Weir Flow Simulator — Rectangular and V-Notch

Pipe Flow & Pumps

The weir flow simulator computes discharge over a rectangular weir (Rehbock) and a V-notch weir (Thomson) in real time from head, crest width, weir height and notch angle.

Wind Shear Profile IEC 61400 Simulator

Aerodynamics

Combine atmospheric boundary-layer wind profiles (power law and log law) with IEC 61400 turbine classes to evaluate hub-height wind speed, vertical rotor shear, rotor-eq…

Wind Tunnel Blockage Correction Simulator

Aerodynamics

Wind Tunnel Blockage Correction Simulator: Compute wall-interference (blockage) corrections for a model inside a wind tunnel using Maskell and Mercker formul…

Wing Lift & Drag Calculator — NACA Airfoil Aerodynamics

Aerodynamics

Calculate lift and drag for NACA airfoils. Adjust angle of attack and aspect ratio to visualize performance with our aerodynamic coefficient calculator.

Dimensionless Wall Distance y+ Simulator — CFD Boundary Layer Resolution

Aerodynamics

Compute dimensionless wall distance y+ in real-time for CFD boundary layer meshing. Adjust flow parameters to determine viscous sublayer, buffer layer, and log-law regions for turbulence modeling.

Young-Laplace Simulator — Surface Tension and Capillary Action

Fluid Statics & Surface Tension

Young-Laplace Simulator for computing Laplace pressure, capillary rise, and Bond number from surface tension and curvature. Real-time interface physics calculations.

CFD Near-Wall y⁺ Calculator

CFD & Numerical Methods

Calculate first-cell wall distance Δy for CFD meshes from Reynolds number and target y⁺. Supports k-ε, k-ω SST, Spalart-Allmaras, and LES turbulence models with real-time charts.