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(Solved): (7) Using Blasius exact solution for a laminar boundary layer over a flat plate, prove that the st ...
(7) Using Blasius exact solution for a laminar boundary layer over a flat plate, prove that the stream lines must penetrate the boundary layer edge everywhere. (8) If velocity distribution in B.L. over a flat plate is: . Find displacement thickness " "'and momentum thickness " " of the B.L. in terms of the B.L. thickness, " ".
Expert Answer
To prove that the stream lines must penetrate the boundary layer edge everywhere using Blasius exact solution for a laminar boundary layer over a flat plate, we need to show that the boundary layer thickness ? is greater than the thickness of the region of reversed flow.The Blasius exact solution for a laminar boundary layer over a flat plate is given by: