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You can do that and it gives a good idea of the overall flow as you move the smoke wand. It shows whats good and whats bad, but those terms are purely subjective. The other thing to do is to have lots of little holes in the surface linked to pressure sensors. These readings allow you to calculate the drag. This data is used by engineers to improve efficiency/performance. They are both useful but for different purposes.
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Note, if I've gotten any facts wrong in the above, just ignore any points I made with them
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Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors......
........and HE WOULD KNOW!!!!
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Camaro Fest sub-forum
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