Relative Rain Velocity Simulator

Advanced interactive kinematics tool for analyzing droplet flux.

Live
Rel. Velocity |v⃗rel|
0.0 m/s
≈ 0 km/h
Apparent Angle θ
0.0°
Vertical
Front Flux Dry
0.0 m/s
Rear Flux Dry
0.0 m/s

Environment Parameters

m/s
Error
m/s
Error
m/s
Error

Vehicle Glass Geometry (Rake)

°
°
Quick Scenarios

Kinematics Analysis

Relative Rain Vector (Scope Key)

$$\vec{v}_{\text{rel}} = \textcolor{#0ea5e9}{\vec{v}_{\text{rain}}} - \textcolor{#10b981}{\vec{v}_{\text{car}}}$$

Surface Wetting Rate (Flux $\Phi$)

$$\Phi = \max\!\big(0,\ -\vec{v}_{\text{rel}} \cdot \hat{n}_{\text{glass}}\big)$$

Where $\hat{n}$ is the normal vector of the glass plane. Only drops moving into the glass ($\Phi > 0$) accumulate.