Machine-translated by Google. Questions are authored in English.
Top

Discussion

A boundary layer developing in a corner between two surfaces is particularly prone to separate because

  • A.The flow is necessarily laminar there
  • B.Two retarded layers merge in a rising pressure
  • C.The Reynolds number is locally zero
  • D.The no-slip condition does not apply in corners

Answer: B

Corner flow accumulates low-momentum fluid from both surfaces at exactly the place where an adverse gradient is usually strongest. The result is an early, three-dimensional separation, which is why wing-body and tail junctions are always filleted and are checked carefully in the tunnel.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.