Fluid Mechanics
Aerodynamic Drag Simulator
Examine aerodynamic drag, power requirements, and dynamic stagnation pressure on vehicles within a virtual wind tunnel laboratory.
Model
Wind Tunnel
Subsonic flow
Mesh
35 nodes
Velocity sweep
Output
CSV
Export ready
Parameters
Vehicle Preset
Animated velocity sweep
Aerodynamic Formulations
Drag Force
Fd = 1/2 * ρ * v² * Cd * A
Power Required
P = Fd * v
Dynamic Pressure
q = 1/2 * ρ * v²
Speed is converted from km/h to m/s internally: current speed is 33.33 m/s.
Required power scales cubically with speed (v³). Doubling the speed increases the power requirement by a factor of 8!
Interactive Wind Tunnel Stream
Drag Force
449N
Power Required (kW)
15.0kW
Power Required (HP)
20.1HP
Dynamic Pressure
681Pa
Drag Force & Power Curves vs Speed
Speed Sweep Performance Node Data
| Velocity (km/h) | Drag Force (N) | Required Power (kW) | Dynamic Pressure (Pa) |
|---|---|---|---|
| 10 | 3.1 | 0.0 | 5 |
| 20 | 12.5 | 0.1 | 19 |
| 30 | 28.1 | 0.2 | 43 |
| 40 | 49.9 | 0.6 | 76 |
| 50 | 78.0 | 1.1 | 118 |
| 60 | 112.3 | 1.9 | 170 |
| 70 | 152.8 | 3.0 | 232 |
| 80 | 199.6 | 4.4 | 303 |
| 90 | 252.7 | 6.3 | 383 |
| 100 | 311.9 | 8.7 | 473 |
| 110 | 377.4 | 11.5 | 572 |
| 120 | 449.2 | 15.0 | 681 |
| 130 | 527.1 | 19.0 | 799 |
| 140 | 611.4 | 23.8 | 926 |
| 150 | 701.8 | 29.2 | 1,063 |
| 160 | 798.5 | 35.5 | 1,210 |
| 170 | 901.5 | 42.6 | 1,366 |
| 180 | 1,010.6 | 50.5 | 1,531 |
| 190 | 1,126.0 | 59.4 | 1,706 |
| 200 | 1,247.7 | 69.3 | 1,890 |
| 210 | 1,375.6 | 80.2 | 2,084 |
| 220 | 1,509.7 | 92.3 | 2,287 |
| 230 | 1,650.1 | 105.4 | 2,500 |
| 240 | 1,796.7 | 119.8 | 2,722 |
| 250 | 1,949.5 | 135.4 | 2,954 |
| 260 | 2,108.6 | 152.3 | 3,195 |
| 270 | 2,273.9 | 170.5 | 3,445 |
| 280 | 2,445.5 | 190.2 | 3,705 |
| 290 | 2,623.3 | 211.3 | 3,975 |
| 300 | 2,807.3 | 233.9 | 4,254 |
| 310 | 2,997.6 | 258.1 | 4,542 |
| 320 | 3,194.1 | 283.9 | 4,840 |
| 330 | 3,396.8 | 311.4 | 5,147 |
| 340 | 3,605.8 | 340.5 | 5,463 |
| 350 | 3,821.0 | 371.5 | 5,789 |