Fluid Mechanics Simulators

Added Mass Simulator

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

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

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

Aerosol Particle Dynamics Calculator

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

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…

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

Archimedes Buoyancy Simulator: calculate buoyancy forces by setting object density, volume, and fluid properties.

Atmospheric Boundary Layer Profile Calculator — Log Law & Power Law

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

Baseball Pitch Magnus Force Simulator compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

Bernoulli Theorem Applications Simulator

Explore Bernoulli's Principle applications in Venturi tubes.

Bernoulli's Theorem Pipe Flow Visualizer

Pipe Flow & Pumps

Visualize Bernoulli's Theorem 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

Bingham Plastic Fluid Simulator — Yield-Stress Non-Newtonian Fluid focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case a…

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…

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

Aerodynamics

Turbulent boundary layer simulator for flat plates using 1/7 power law.

Flat Plate Boundary Layer Growth Simulator

Aerodynamics

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

Buoyancy & Stability Simulator — Metacentric Height GM Calculator

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

Calculate buoyant force, weight, and apparent weight in real time. Visualize Archimedes' principle with this interactive buoyancy calculator.

Capillary Rise Simulator

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

Cavitation Npsh Margin Detail Simulator

Pipe Flow & Pumps

Cavitation Npsh Margin Detail Simulator updates live numeric results and charts as inputs change, supporting early design checks and model review.

Cavitation Number Simulator

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

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 Mesh Quality Metrics Calculator compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

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

Compressible Flow

Choked Flow Simulator — Critical Conditions and Mass Flow Rate in a Converging Nozzle compares how flow rate, pressure loss, and hydraulic margin shifts as the main assu…

Aircraft Rate of Climb Simulator

Aerodynamics

Aircraft Rate of Climb Simulator compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

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

Aerodynamics

Coanda effect simulator for wall-attached jets.

Compressible Nozzle Area Mach Simulator

Compressible Flow

Compressible Nozzle Area Mach Simulator updates live numeric results and charts as inputs change, supporting early design checks and model review.

Compressor Design Calculator — Isentropic Compression Simulator

Optimize compressor performance with our interactive calculator.

Compressor Polytropic Efficiency Simulator

Compressor Polytropic Efficiency Simulator updates live numeric results and charts as inputs change, supporting early design checks and model review.

Compressor Surge Margin Map Simulator

Compressor Surge Margin Map Simulator updates live numeric results and charts as inputs change, supporting early design checks and model review.

Control Valve Cv Cavitation Simulator

Pipe Flow & Pumps

Control Valve Cv Cavitation Simulator updates live numeric results and charts as inputs change, supporting early design checks and model review.

Rayleigh–Bénard Convection Cells Simulator

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

Convection-Diffusion Equation Simulator (Numerical Stability)

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

Couette Flow Simulator — Viscous Flow Between Parallel Plates

Couette flow simulator for viscous flow analysis between parallel plates.

Cyclone Separator Cut Size Simulator

Cyclone Separator Cut Size Simulator updates live numeric results and charts as inputs change, supporting early design checks and model review.

Darcy vs Fanning Friction Factor Simulator

Pipe Flow & Pumps

Darcy vs Fanning Friction Factor Simulator focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend that matter…

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

Aerodynamics

Calculate drag & lift forces, terminal velocity, and vortex frequency in real time.

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 — Rectangular Duct Pressure Drop focuses on heat transfer, temperature difference, and cooling margin, giving a compact read on the current ca…

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

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

Airship Helium Buoyancy & Lift Simulator focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend that matters …

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 prof…

Ergun Equation Simulator — Pressure Drop in Packed Beds

Simulate pressure drop in packed beds using the Ergun equation.

Fan Curve & System Curve Calculator

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

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

Calculate filtration pressure, filter media resistance, and cake specific resistance in real-time using Darcy's law and the Kozeny-Carman & Ruth equations.

Fire Sprinkler Coverage & NFPA 13 Design Simulator

Fire Sprinkler Coverage & NFPA 13 Design Simulator: Size a wet-pipe sprinkler system to NFPA 13 in real time.

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

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 Theorem Simulator — Pipe Flow Pressure & Velocity focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and th…

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

Explore fluid pressure, buoyancy, and Pascal'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

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

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

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

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

Fluid Vortex Simulator — Free, Forced & Rankine Vortex Velocity and Pressure focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the curr…

Fluidized Bed Simulator — Minimum Fluidization Velocity & Pressure Drop

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

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

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

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

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

Glider Polar Curve & MacCready Speed Simulator

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

Hagen-Poiseuille Flow Simulator — Laminar Pipe Flow

Pipe Flow & Pumps

Hagen-Poiseuille Flow Simulator — Laminar Pipe Flow compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

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

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

HVAC Duct Pressure Drop ASHRAE Simulator focuses on heat transfer, temperature difference, and cooling margin, giving a compact read on the current case and the trend th…

Hydraulic Diameter Simulator — Non-Circular Ducts

Pipe Flow & Pumps

Hydraulic Diameter Simulator — Non-Circular Ducts compares how nearby design assumptions and key metrics shifts as the main assumptions change.

Hydraulic Jump Simulator

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 clo…

Hydrostatic Pressure Simulator

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

ISS Microgravity Marangoni Convection Simulator

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

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.

Jet Mixing

Jet Mixing links flow rate, pressure loss, and hydraulic margin in a compact simulator page, helping users choose the next calculation from the same engineering cluster.

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

Knudsen Number Simulator for rarefied gas flow regime classification.

Lava Lamp Simulator — Thermal Buoyancy & Natural Convection Physics

Lava Lamp Simulator — Thermal Buoyancy & Natural Convection Physics focuses on heat transfer, temperature difference, and cooling margin, giving a compact read on the cu…

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

Liquid Pour Simulator — Interactive SPH Particle Fluid focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend…

Mach Cone Simulator — Sonic Boom from Supersonic Flight

Aerodynamics

Mach Cone Simulator — Sonic Boom from Supersonic Flight compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

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

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

Pipe Fitting Minor Loss Simulator — K-Factor Method

Pipe Flow & Pumps

Pipe Fitting Minor Loss Simulator — K-Factor Method focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend th…

Mixing Calculator — Mass, Volume & Molar Concentration

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.

2D Navier-Stokes Flow Simulator

2D Navier-Stokes CFD simulator for lid-driven cavity flow.

Normal Shock Relations Simulator — Compressible Flow

Compressible Flow

Normal Shock Relations Simulator for compressible flow analysis.

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

Isentropic Nozzle Flow Calculator focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend that matters next.

NPSH Simulator — Pump Cavitation Margin Assessment

Aerodynamics

NPSH Simulator — Pump Cavitation Margin Assessment compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

Nusselt Correlation Simulator — Dittus-Boelter Correlation for Pipe Flow

Pipe Flow & Pumps

Nusselt Correlation Simulator — Dittus-Boelter Correlation for Pipe Flow compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions chang…

Oblique Shock Wave Simulator — θ-β-M Relation

Compressible Flow

Oblique shock wave simulator using θ-β-M relation for supersonic flow analysis.

Ocean Wave Simulator — Dispersion Relation, Particle Orbits

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

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

Pipe Bend Thrust Force Simulator focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend that matters next.

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

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

Pitot Tube Velocity Simulator focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the trend that matters next.

Potential Flow Around Cylinder Simulator

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

Power-Law Fluid Simulator — Ostwald-de Waele Non-Newtonian Model compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

Prandtl-Glauert Simulator — Subsonic Compressibility Correction

Aerodynamics

Prandtl-Glauert compressibility correction simulator for subsonic airfoil aerodynamics.

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.

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

Propeller Actuator-Disk Simulator compares how physics-model assumptions and visualization shifts as the main assumptions change.

Marine Propeller Cavitation (Thoma + Burrill) Simulator

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

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

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 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

Interactive Reynolds number calculator with real-time flow regime map.

Reynolds Transport Theorem Simulator — Control Volume Analysis

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

Richardson Number Simulator — Stability of Stratified Flow

Richardson number simulator: real-time Ri = g B dT L / V^2 for stratified flow. Brunt-Vaisala frequency, mixing-limit velocity, and stability regions at Ri = 0.25 and 1.

Rotameter (Variable-Area Flowmeter) Simulator

Rotameter (Variable-Area Flowmeter) Simulator compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

Sedimentation Velocity & Stokes' Law Calculator

Calculate terminal velocity with our Stokes' Law calculator. Input particle size, density, and fluid viscosity for real-time results across all flow regimes.

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

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

Real-time KB, BM, GM and GZ righting lever curve calculation using a box approximation with block-coefficient Cb correction.

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

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

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.

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

Aerodynamics

Predict Karman vortex shedding frequency and lock-on resonance using Strouhal number calculator.

Sudden Expansion Loss Simulator — Borda-Carnot

Pipe Flow & Pumps

Sudden Expansion Loss Simulator — Borda-Carnot compares how heat transfer, temperature difference, and cooling margin shifts as the main assumptions change.

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

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

Swimming Drag & Power Calculator

Aerodynamics

Calculate hydrodynamic drag and required propulsion power in swimming. Visualize effects of speed, body shape, and stroke style.

Tunnel Fire CFD Ventilation Critical Velocity Simulator

Pipe Flow & Pumps

Tunnel Fire CFD Ventilation Critical Velocity Simulator compares how nearby design assumptions and key metrics shifts as the main assumptions change.

Road Tunnel Jet Fan Ventilation Simulator

Pipe Flow & Pumps

Road Tunnel Jet Fan Ventilation Simulator: Design longitudinal (jet fan) ventilation for road tunnels.

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 crit…

Turbine Blade Aerodynamics — NACA Airfoil Lift & Drag

Aerodynamics

Calculate lift and drag for NACA airfoils in real time. Adjust the angle of attack and instantly see the resulting aerodynamic coefficients and airfoil shape.

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, rel…

Turbulence Model Selection Guide & y+ Calculator

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)

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

Viscosity & Rheology Simulator — Newtonian, Power-Law, Bingham

Compare fluid models like Newtonian and Bingham plastic on shear stress diagrams. Calculate temperature effects and identify shear-thinning or dilatant behavior.

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

Wake of Bluff Bodies Simulator — C_D and Strouhal Number focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the tre…

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 — Torricelli's Law compares how flow rate, pressure loss, and hydraulic margin shifts as the main assumptions change.

Wave Diffraction in Harbors (Sommerfeld Theory)

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

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

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

Weber Number Simulator — Droplet Inertia vs Surface Tension focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and the …

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 h…

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 r…

Wind Tunnel Blockage Correction Simulator

Aerodynamics

Wind Tunnel Blockage Correction Simulator focuses on nearby design assumptions and key metrics, giving a compact read on the current case and the trend that matters next.

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.

Young-Laplace Simulator — Surface Tension and Capillary Action

Young-Laplace Simulator — Surface Tension and Capillary Action focuses on flow rate, pressure loss, and hydraulic margin, giving a compact read on the current case and t…

CFD Near-Wall y⁺ Calculator

Calculate first-cell wall distance Δy for CFD meshes from Reynolds number and target y⁺.