They model the bejessus out of F1 cars, but flow is always chaotic at
the macro level. You can't even really precisely model water flow
through a pipe except as an ideal pipe. You can be very predictive
about components and even interactions between components to a degree,
but its not enough to really know what's going to happen. For that you
can't beat a tunnel. And the tunnel has to have a lot of special
characteristics. I know that even half-size models are viewed as a
gross approximation. Only a full size model will do, and it needs to
have steerable wheels, dynamic height front and back, and a rolling
road before the data is considered truly useful.
They also model (and wind-tunnel test) car to car interaction
On Oct 22, 2008, at 3:16 PM, Shane Ingate wrote:
> Kas wrote:
>> Wind tunnels have an amazing cost. Some teams have two full size
>> running 24
>> hours a day.
>
> That's interesting. I would have thought that today all
> aerodynamic and structure-loading modeling was done on a
> computer. As Kas suggests, wind tunnels are expensive, but
> computer modeling is dirt-cheap where an engineer can change
> model parameters and make the calculations within minutes
> that would otherwise necessitate a complete day in a wind tunnel.
>
> Many models these days (I speak for hydrodynamic and sub-atomic
> interactions in the far-field) use non-linear models. I would not be
> surprised if non-linear models were used in the simple case of
> aerodynamics.
>
> Shane Ingate in NM
>
>
>
>
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