Thread: comment on 1st-gen Porsche 911/912 lift
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Old 06-06-2020, 04:54 PM   #39 (permalink)
California98Civic
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Black and Green - '98 Honda Civic DX Coupe
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Quote:
Originally Posted by kach22i View Post
Pressure drag?

Why would we limit ourselves to that?

A vortex may be a simple planar pressure difference at the surface, and it's true expression as a force of power forms after. ...
Yes. That is my understanding as well, though you said it better. The tufts and pressure readings tell a real story, but not the entire story of drag.

Quote:
Originally Posted by freebeard View Post
... Tufts vs streamlines: The best tools are Schielren photography and advanced CFD (using OpenVDB and Micropolygon Displacement.
I think you meant Schlieren imaging?
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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