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Old 03-02-2023, 12:51 PM   #17 (permalink)
aerohead
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'dust'

Quote:
Originally Posted by California98Civic View Post
You have shared this photo a bunch of times, and I never regret the repeat. One of the best shots ever taken for seeing aspects such as separation lines, visualized here beautifully over the front tire and aft of the passenger compartment. You can see the recirculation zone behind the tire recapitulated behind the car and easily connect the principle to the dust sticking on the base area. Would be an excellent teaching tool. In fact, next time I am at El Mirage, I'll see if I can get still shots of dust deposits on one of the roadsters that can compare to this.
When NASA was conducting their truck aerodynamics testing at Edwards Air Force Base, they used diatomaceous earth to help visualize the airflow dynamics.
In college, the Lubbock, Texas area provided many, low traffic caliche roads , with silt so fine that, generating high-contrast separation lines were a no brainer. Very much like El Mirage Dry Lake, California, near Adelanto, where we used to race motorcycle T-T scrambles.
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