Wind Tunnel Free app for iPhone and iPad

4.8 ( 48 ratings )

Entertainment Education
Developer: Algorizk

Free

Current version: 1.51, last update: 8 years ago
First release : 19 Jul 2010
App size: 1.34 Mb

Turn your iPad/iPhone into a wind tunnel simulator !

Draw obstacles and watch the fluid flow around. Experiment with different sizes, shapes, aerodynamic profiles and see what happens !
Tap the blue button to bring application controls. Three segmented controls let you choose between:

• 4 touch actions: interact with the fluid, draw walls, insert smoke probe, use eraser tool.
• 4 visualization modes: particles, smoke, pressure field, velocity field.
• 2 simulation modes: wind tunnel (with adjustable wind speed), free mode (with no constrained wind).

If you are interested in more options, check out Wind Tunnel, the paid version of this app, with many more features!

New in version 1.5.1:
- updated for iOS 9

New in version 1.5:
- improved retina graphics
- new simulation engine for dual-core devices
- iPhone 5 support
- other graphic improvements

New in version 1.3:
- Much more accurate fluid simulation engine.
- Visualization of velocity field, with this color scheme : black (fluid at rest), blue, red, yellow (highest speed).
- New preset models (try "swirl" !).
- Ability to change smoke color : in "interact" touch action and "smoke" mode, double tap on the smoke source, at the top of the screen
- Fixed bugs on boundary conditions.

New in version 1.2:
- Added support for older iphones and ipod touch (armv6)
- Minor bug fixes
- Added models of the "Lite" version

Fluid motion is computed by solving Navier-Stokes equations, at high definition ( 23000 grid cells on ipad ) thanks to a well-optimized code taking the most out of CPU performance.

Thank you all for your great comments.

Pros and cons of Wind Tunnel Free app for iPhone and iPad

Wind Tunnel Free app good for

Last update brought me close to paradise ;-) I give you already top rank !! My personal sixth star will be for : - show inlet speed on cursor - display pressure scale bar - undo function - save/load models as bitmaps from camera roll - zoom - stramlines/speed intensity - modify fluid viscosity/density Bravissimo !!

Excellent app. Bluffing power. I just wish the ability to import/export models. That would make it a killing app!

Very good software It would be better if we can generate shape in a more accuate way and if we could modify fluid caracteristic to simulate air and water The record of shape to compare shape could also be usefull

This is a very very good app for lift/drag demonstration of any objects because you draw them !! Anyway, as I state in the title, if developpers add the iPad rotation to control the flow angle, it Will be a PERFECT app, more useful, and better to illustrate lift/drag at any angle of attack, just by turning (banking) the iPad... With this update, I Will add the 5th star !!! Thank you ;-) A Flight Instructor

Thanks for the fluidic simulation app. Is it possible in future to handle the own drawings as object to rotate it in free angle and to move it. And it would be great, if you could save the own drawings. Keep it up!

Why is it not possible to take a picture from the liberay, to draw around a car o similar?

Some bad moments

Great! Would be nice if you could use a pic and/or zoom in to draw more accurately, otherwise Its amazing. keep up the good work.

I love this app! I have spent lots of time just playing making shapes and using the different modes on my iPad 2.

For us aerodynamics nerds out there, this app is incredibly fun and useful to understand and explain changes in velocity and pressure, and how minute changes in design affect the pressure distributions around an object... Simple to use, but above all FUN!

This is a great app. I am a flight instructor and showing how lift works is amazing through this app ! Its perfect ... But if you could rotate the airfoil to different pitch angles to show what happens as the angle is increased would be even better ! So if thats possible to do that would be great !

This is a great tool to visualize flows of different types. The only thing that would be rad would be the ability to insert shapes derived outside of the app, like an airfoil created in a program like Matlab or mathematica. Otherwise this thing is great.

One glimpse at the free version and I knew I had to draw my own walls. Best $2 spent in the app store! What could make it even better? Id love to have even a few basic drawing tools for straight lines, circles, boxes, etc. And the icing on that cake would be vector objects. Imagine creating your airfoil, then being able to rotate it slowly, changing the angle of attack and observing the onset of stall. Now youre talking! Thanks for a great app

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