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The viscosity of a fluid is a measure of its resistance to flow, or be deformed, stirred, and changed shape.

1 vote
2 answers
227 views

Does the lift created by a wing change when the slats are deployed?

This is a conceptual question as much as an empirical one, but the question is: Does the lift of a wing change when the slats (or any other leading edge device) are deployed? I am stipulating that the …
Bryson S.'s user avatar
  • 3,966
3 votes
2 answers
611 views

How can a gas support tensile stresses?

In working through a rigorous derivation of the compressible Navier-Stokes equations, I find that the momentum flux in the X-direction should be driven not only by the normal pressure gradient $\frac{ …
Bryson S.'s user avatar
  • 3,966
11 votes
1 answer
12k views

What is a Physically Accurate Explanation for the Kutta Condition?

Countless arguments between highly intelligent people have been waged (on this very site in fact) as to exactly how lift can be explained in an experimentally and mathematically rigorous way. Taking t …
Bryson S.'s user avatar
  • 3,966