Wind Tunnel is an addon for Blender 5.2 +
It draws smoke-like lines around the objects in your scene while the timeline play.
You can tweak the lines thickness, speed, number etc.
The lines bend around obstacles, speed up through gaps and curl into wakes behind them.
The result can be baked into a standard mesh with one shape key per frame or a vat texture, which you can edit, render and export to other softwares or game engines.
The lines movement runs by default on the gpu, so you need a recent gpu to proper use the addon.
Please note this is not an accurate simulation, it was made with the purpose of visual motion graphics and vfx in mind.


Key features:
Quick simulation on the gpu
Flow speed color saved on the mesh for vfx or other texture effects
Bake the animation as a mesh with shape keys and color textures so you can later edit it or export as a standard mesh.
Loop feature to bake looping VFX
Alternative animation baking method as VAT (vertex animation texture) for a lightweight bake (useful also if you want to export it to game engines).