Neutron STEM Lab

Fluid Mechanics Calculators & Hydraulic Engineering Tools

Free fluid mechanics calculators for Reynolds number, pipe head loss, Manning flow, hydrostatics, pumps, boundary layers, compressible flow, and hydraulic systems.

Explore Fluid Mechanics

Analyze fluid systems with calculators covering fluid properties, hydrostatics, internal pipe flow, open-channel hydraulics, external flow, pumps, and compressible flow.

The tools include unit-aware equations and numerical solvers for common engineering quantities such as Reynolds number, friction factor, head loss, flow rate, pressure, and Mach-number relationships.

Common topics

  • Reynolds number
  • Darcy-Weisbach head loss
  • pipe sizing
  • Manning equation
  • open-channel flow
  • hydrostatics
  • pump systems
  • compressible flow
Compute, inspect, verify

Solve fluid transport and incompressible flow

Explore six CFD experiments with field maps, analytical references, conservation checks, and mesh convergence.

Open the Computational Fluid Dynamics Laboratory →

Fluid Mechanics tools

Open a calculator, simulator, visualizer, or reference workbench.

Compressible Flow: labelled diagrams and key equations for Mach number, nozzles, shocks, and choked flow.
Fluid Mechanicsintermediate

Compressible Flow Workbench

Explore Mach number, stagnation properties, isentropic nozzles, choked flow, shocks, expansion waves, mass flux, and thrust.

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External Flow & Boundary Layers: labelled diagrams and key equations for drag, lift, boundary layers, and similarity.
Fluid Mechanicsintermediate

External Flow & Boundary Layers Workbench

Calculate drag, lift, boundary-layer growth, skin friction, sphere settling, dimensionless groups, and model similarity.

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Fluid Machinery & Systems: labelled diagrams and key equations for pumps, turbines, hydraulics, and fans.
Fluid Mechanicsintermediate

Fluid Machinery & Hydraulic Systems Workbench

Analyze pumps, turbines, operating points, affinity laws, NPSH, pump combinations, cylinders, accumulators, and fans.

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Fluid Mechanics Reference: labelled diagrams and key equations for reference, properties, equations, and measurement.
Fluid Mechanicsintroductory

Fluid Mechanics Reference Center

Browse detailed fluid properties, dimensionless numbers, equations, devices, measurement methods, modeling guidance, and limitations.

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Fluid Properties & Hydrostatics: labelled diagrams and key equations for density, pressure, buoyancy, and viscosity.
Fluid Mechanicsintermediate

Fluid Properties & Hydrostatics Workbench

Calculate density, pressure, hydrostatic forces, buoyancy, floating stability, capillarity, compressibility, and viscous shear.

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Internal Pipe Flow: labelled diagrams and key equations for pipes, friction, head loss, and water hammer.
Fluid Mechanicsintermediate

Internal Pipe Flow Workbench

Free pipe flow calculators for Reynolds number, Darcy-Weisbach head loss, friction factor, minor losses, pipe sizing, parallel pipes, and water hammer.

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Open-Channel Flow: labelled diagrams and key equations for channels, Manning equation, hydraulic jump, and weirs.
Fluid Mechanicsintermediate

Open-Channel Flow Workbench

Free open-channel flow calculators for Manning discharge, normal depth, critical depth, specific energy, hydraulic jumps, and channel geometry.

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