Flow Illustrator - a simple windtunnel simulator

[texanidiot25]

Originally Posted by AndrewJ

Dammit, I got all the BMP's made but my mac won't play the video files back to me.

Time to do some detective work on finding the right codecs or whatnot.

They are .avi videos. Try downloading DivX, if they have it for MAC then it's a player that supports .avi

Originally Posted by adrive7

For a pickup truck I would leave off the side walls of the bed. Draw the Cab, the floor of the bed, and the tailgate. Otherwise you don't see the effect of the vortex in the bed. Leaving them on shows what it would look like with a tonneau cover.

Done:

OPEN:

YouTube - Truck bed test, open bed

TANO COVER:

YouTube - Truck bed test, Tano cover

FASTBACK:

YouTube - Truck bed test, Fast back

(give them time to process)

[AndrewJ]

Originally Posted by texanidiot25

They are .avi videos. Try downloading DivX, if they have it for MAC then it's a player that supports .avi

No dice, I tried downloading DivX and XviD codecs, but still no luck...


Anybody feel like helping a fella out?

[cfg83]

AndrewJ -

Originally Posted by AndrewJ

No dice, I tried downloading DivX and XviD codecs, but still no luck...

Why not upload it to YouTube? You can delete it afterwards if you don't like it.

CarloSW2

[cfg83]

EDIT: SUPERCEDED BY POST #65 :
http://ecomodder.com/forum/45192-post65.html

Hello -

I didn't change any of the default numbers except for duration (40 seconds), so maybe this is all wrong. First, I did a stock analysis on my SW2 :


1999 Saturn SW2 Aero-Analysis
...removed to save download time...

After around 6 seconds, a "Virtual Kamm-Back" appears (at least that's what I call it). Then I did an analysis with a Kamm-Back based on MetroMPG's rain-drop example, ending at the bumper :

1999 Saturn SW2 + Kamm-Back Aero-Analysis
...removed to save download time...

Finally, I went back to the first analysis and added the "Virtual Kamm-Back" :

1999 Saturn SW2 + Kamm-Back II Aero-Analysis
...removed to save download time...

I like the Virtual Kamm-Back because it would mean not having to worry about moving the 3rd brakelight and maintaining almost full rear visibility. It also seemed to produce the most stable swirly-wake during the run. A nice compromise.

Question: Could my Virtual Kamm-Back be "tailored to the program"? What I mean is, could I be making a shape that the program likes?

CarloSW2

[Chris D.]

I had no luck getting the player to work for me..

I uploaded it, it loaded and let me download the video, but it wouldnt play on anything I have..

I think I have the sizes right.. donno..

[i_am_socket]

The issue with the videos is that they are AVI's encoded with WMV3 which is the format for Windows Media Player 9. Took me the better part of an hour just to be able to grab a frame to do side by side comparisons.

From all the googling I did on that, it doesn't look like there's much to help out the Mac peoples. Since the codec's a bit old, there might be something you guys can use. HERE's a thread from 2005 on the subject.

[trikkonceptz]

For us Mac guys, how about using a program like popcorn, which converts file types to just about anything ...

[adrive7]

If you are having trouble viewing the files, download VLC Media Player. It plays pretty much anything, including corrupted files.

VLC media player - Overview

Good for windows or Mac.

[cfg83]

Chris -

I processed yours and put it on YouTube :

YouTube - Chris Ds Taco

I made the Taco smaller and put a road underneath.

I'll delete it from YouTube if you want me to.

CarloSW2

[Blue Bomber]

Did a bunch of vids of my car in different scenarios:

YouTube - 93 MR2 - Windows Closed - Flow Illustrator

Windows Closed

YouTube - 93 MR2 - Windows Open - Flow Illustrator

Windows Open

YouTube - 93 MR2 - Windows Closed + Rear Diffuser - Flow Illustrator

Windows Closed + Rear Diffuser

YouTube - 93 MR2 - Windows Closed + Vented Hood - Flow Illustrator

Vented Hood

YouTube - 93 MR2 - Windows Closed + Hood + Diffuser - Flow Illustrator

Vented Hood + Rear Diffuser



Only problem I had was that I didn't know what numbers to enter into the program besides the movie time. The only thing I'd want to mess around with them for is aerodynamic difference between around 50 and 80mph, since those are the speeds I travel most.


Does this program use gravity in any of these movies? If not, then maybe we could do top-down movies, testing things like mirrors and front/rear shapes, as well.