Concrete -
Quote:
Originally Posted by Concrete
cfg83
was not trying to second guess you - more worried about the simulation itself.
even if the Reynolds numbers different it would just mean we are simulating the wrong speed a bit. If the simulation math is wrong we could be simulating flow on Saturn or worse - flow in a cartoon world that is completely unattached to reality.
I guess I was expecting somebody with a kamm back to get flow like below.
even the snow cone looks like the flow is trying to separate down the back.
I just thought of something
Could just drop this pic in the simulator and try it and see how it compares 
That is about as close to a head to head against reality as we may be able to get
not sure i will get it done tonight though |
I am always confounded by aero because I know it works, but I don't feel comfortable with *how* to prove it works beyond testing it in the real world. This is the *closest* thing we've had to a usable free CD tester. The better thing would be a 3D freeware simulator, but then we have to spend time modeling and/or buy models that may also be lacking.
If I were you, I would do scale multiples of the 256x128 silhouette in 2-bit black and white. I am partial to the orientation of my car bitmaps because you can see more of the wake :
I have been watching for a pitch black wall to take a more representative picture of my car.
CarloSW2