Fluid-flow visualisation laboratory

Place objects in a virtual flow chamber and compare streamlines, pressure, velocity, boundary layers and wakes.

FLOW REGIMELAMINAR

High pressureLow pressureStreamlineVorticity

Experiment

Preset

Object and model

ObstacleFlow modelObstacle size 1.0×Angle of attack 0°

Fluid properties

Inlet velocity 10.0 m/sDensity 1.20 kg/m³Dynamic viscosity 0.018 mPa·sTurbulence intensity 8%Animation speed 1.0×

Visualisation

Tracer particles 220Streamline density 18Vector density 16 Streamlines Particle tracers Velocity vectors Pressure heatmap Vorticity heatmap Wake region Labels and probe values

REYNOLDS NUMBER6.7 × 10⁵

transitional flow

PROBE VELOCITY10.0 m/s

direction 0°

PROBE PRESSURE101.3 kPa

vorticity 0.00

LIFT / DRAG COEFFICIENT0.00 / 1.10

educational estimate

DYNAMIC PRESSURE60 Pa

mass flow 12.0 kg/s

WHAT TO NOTICE

Shape redirects the flow

Fluid accelerates around constrictions, often reducing static pressure. Viscosity creates boundary layers; behind blunt objects these layers separate, forming a low-pressure wake and alternating vortices as Reynolds number increases.

Re = ρvL / μq = ½ρv²F_D = ½ρv²C_DA

Educational browser-friendly flow approximation. It is not a replacement for engineering CFD software or experimental testing.