Pipe Flow & Pumps Simulators

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

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.

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

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

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

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

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…

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.

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

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

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.

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

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.

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

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

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

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

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

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.

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: Compute the hydraulic diameter of rectangular ducts, annular passages and square ducts. Change the cross-s…

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 …

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

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.

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.

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

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

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

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

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

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

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

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

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.

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.

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

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

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: 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…

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.

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

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

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

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

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

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: Design longitudinal (jet fan) ventilation for road tunnels. Change tunnel length, cross-section, traffic density a…

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

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

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.

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.

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…

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

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

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.