Simulation Lab
Play first, then look inside. Every simulation shows the equations behind it, the assumptions it makes and where it stops being valid. Each one opens inside its lesson, at the Experiment step.
Simulations
Each simulation has three modes: Visual (watch), Engineering (all numbers, equations and graphs) and Experiment (predict, run, compare, save).
Shear Test
Slide a plate over water, honey or air, or push a rubber or steel block.
Model: Steady laminar Couette flow, τ = μU/h; linear elastic shear, τ = Gγ
Molecules In Motion
Tilt, push and squeeze the same molecules in three states.
Model: Conceptual particle illustration; squeeze from bulk modulus and the ideal gas law
Three Views Of A Pipe
One pipe, three questions: how hard, how fast, what energy.
Model: Constant-head tank, Vₑ = √(2gH), continuity, Bernoulli, losses ignored
Zoom Into A Fluid
Shrink a sampling box until density starts to flicker.
Model: Expected counts N̄ = nL³ with statistical sampling; Knudsen number
Fluid Particle Tracker
Drop particles, dye and a tiny square into a flow and watch them move and deform.
Model: Prescribed 2D incompressible velocity fields; pathlines, streaklines, streamlines
System Or Control Volume
Follow one blob of water, or watch a tank fill and settle.
Model: Mass balance with pump inflow; orifice outflow or household demand; overflow at 2 m
Interactive Tools And Calculators
Fluids Around You
Find 8 hidden fluid mechanics problems in one street.
Fluid Mechanics Timeline
4,500 years from Harappan drains to computer simulation, with Torricelli's tank.
Practice Or Theory
Sort the jobs into hydraulics or hydrodynamics.
Channel Flow Calculator
Size a canal with Manning's equation.
Classify The System
Sort 8 everyday things into open, closed and isolated, and move the boundary.
Dimension Builder
Build any quantity from M, L, T and convert between units.
Fluids In Machines
Explore the fluids in a car, a power plant and a factory.
Pump Power Calculator
Size a pump, its electricity use, running cost and payback.