Fluid Dynamics
Stokes' Drag Simulator
Analyze fluid drag on spherical objects in low-Reynolds numbers (creeping flows). Control sphere size, velocity, and fluid viscosity to evaluate drag force, Reynolds number, and coefficient variations.
Flow Regime
Turbulent
Re = 11236.0
Fluid Type
Water
Newtonian Fluid
Output
CSV
Export ready
Parameters
Fluid Presets
Animated velocity sweep
Fluid Mechanics Model
Stokes' Drag Law
Fd = 6 * pi * mu * R * V
Reynolds Number
Re = (rho * V * 2 * R) / mu
Drag Coefficient
Cd = 24 / Re
Valid primarily for creeping flow (Re < 1) where inertial forces are negligible compared to viscous forces.
For custom fluids, adjust density and viscosity sliders. Water density is ~1000 kg/m³.
Velocity & Drag Vector Visualizer
Drag Force (Fd)
0.0839mN
Reynolds Number (Re)
11235.9551
Drag Coefficient (Cd)
0.00
Viscous Drag Ratio
100%
Drag Force vs. Flow Velocity
Flow Node Data
| Velocity (m/s) | Drag Force (mN) | Reynolds Number (Re) |
|---|---|---|
| 0.01 | 0.002 | 224.72 |
| 0.11 | 0.018 | 2471.91 |
| 0.21 | 0.035 | 4719.10 |
| 0.31 | 0.052 | 6966.29 |
| 0.41 | 0.069 | 9213.48 |
| 0.51 | 0.086 | 11460.67 |
| 0.61 | 0.102 | 13707.87 |
| 0.71 | 0.119 | 15955.06 |
| 0.81 | 0.136 | 18202.25 |
| 0.91 | 0.153 | 20449.44 |