But what is causing the material heating? Viscosity transferring energy from the turbulence in the unseparated flow. The turbulence itself robs energy that flows away in the [slightly] heated air.
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Parasitic drag is drag that acts on an object when the object is moving through a fluid. In the case of aerodynamic drag, the fluid is the atmosphere. Parasitic drag is a combination of form drag and skin friction drag.[1] Parasitic drag does not result from the generation of lift on the object, and hence it is considered parasitic.
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en.wikipedia.org/wiki/Parasitic_drag
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
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