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About WindTunnel

Turn your device into a wind tunnel simulator ! 

Draw obstacles and watch the fluid flow around. Experiment with different sizes, shapes, aerodynamic profiles and see what happens !

Visualize airflow with smoke, particles, or observe pressure field, velocity or turbulences. The simulation engine also computes an approximation of lift and drag.


The Wind Tunnel app lets you create beautiful wind tunnel scenes, play with the fluid and understand physics effects. 
Fluid motion is computed by solving Navier-Stokes equations, at high definition and in real-time thanks to optimized code taking the most out of CPU and GPU performance. You can for example observe the mechanism of lift/drag over an airfoil, and how it stalls when the angle of attack increases (use two-finger rotate gesture to rotate the scene).



Full feature list include :


• choose between 4 actions (lower right button): interact with the fluid, draw obstacles, use eraser tool, or add rotors.

• visualization modes : particles (streamlines, streak lines and random), colored smoke (predefined stripes, streamlines or streak lines), pressure field, speed norm visualization, curl (visualize turbulences), velocity field (visualize speed direction) combined with speed norm or curl. 

• Save/load your own designed scenes.

• Rotate obstacles with two-finger rotate gesture.
• Change smoke color by tapping twice at the top of the wind tunnel (when smoke is on and in “interact” mode )

• Adjust physical parameters : fluid viscosity, obstacle friction, wind tunnel input speed.
• Switch between two simulation modes: wind tunnel or “free” mode where fluid wraps around screen.
• In “Params”, then “Perf.param”, adjust the grid size and smoke resolution (high-end devices are able to compute larger grid sizes, allowing you to draw thinner obstacles).

• Predefined scenes : airfoil, cars, rocks, Kármán vortex street…


Use the android “back” button to close any interface screen, or to undo the previous action (previous draw/erase).
Use the android “menu” button to hide/show the bottom button bar.

The simulation software will not run on some old devices (it requires NEON instructions), if in doubt, try first the free version, WindTunnel Free.

Contact us at [email protected]


******* ******* *******

Many thanks to the beta-test team: Sylvain, Nicolas, Anaïs, Olivier, Valentin, François.

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Frequently Asked Questions(FAQ)

What can I do with the WindTunnel app?

You can turn your device into a wind tunnel simulator, draw obstacles, visualize airflow with smoke or particles, observe pressure field, velocity, and turbulences, and experiment with different sizes, shapes, and aerodynamic profiles.

How does the fluid motion in the app work?

The fluid motion is computed by solving Navier-Stokes equations in real-time, thanks to optimized code taking advantage of CPU and GPU performance.

What are the different visualization modes available in the app?

The app offers visualization modes such as particles (streamlines, streak lines, and random), colored smoke (predefined stripes, streamlines, or streak lines), pressure field, speed norm visualization, curl (visualize turbulences), and velocity field.

Can I save and load my own designed scenes in the app?

Yes, you can save and load your own designed scenes in the WindTunnel app.

How can I adjust physical parameters in the app?

You can adjust physical parameters such as fluid viscosity, obstacle friction, and wind tunnel input speed in the app.

Are there predefined scenes available in the app?

Yes, the app offers predefined scenes including airfoil, cars, rocks, and Kármán vortex street.

How can I close any interface screen or undo the previous action in the app?

You can use the android "back" button to close any interface screen or undo the previous action in the WindTunnel app.

How can I hide or show the bottom button bar in the app?

You can use the android "menu" button to hide or show the bottom button bar in the WindTunnel app.

Will the simulation software run on all devices?

The simulation software requires NEON instructions and may not run on some old devices. It is recommended to try the free version, WindTunnel Free, if in doubt.

How can I contact the support team for the app?

You can contact the support team at [email protected].
author
Please please please update the app for latest version of android
Tushar Mahajan
author
Very cool, works well
Noah Crutchfield
author
I love it it needs a mirror draw feature to make better symmetry
Andre Newton
author
So much fun to fiddle around with. Most devices stuggle to run the sims at over 20fps however, but I use an emulator to run it on my pc and it's fantastic!
William Kuplis
author
This is a great app for playing around and experimenting with. Definitely worth it
Brendan Upton
author
Exactly what i was looking for since years. Works well on my one year old 150USD Xiaomi with Lineage OS. I am a para-glider pilot and this app gave me a much better understanding of how things "move" :) Keep...
Stephan Stange