Report describes study of influence of nearly isotropic free-stream turbulence on shape factors and skin-friction coefficients of turbulent boundary layers having mild or zero adverse pressure gradients. Results show that under stronger external free-stream turbulence, improved mixing and more effective transmission of momentum from free stream to boundary layer occur when mild adverse gradient of pressure exists, relative to zero-pressure-gradient case with same values of total intensity and integral length scale of turbulence in free stream.
Influence Of Free-Stream Turbulence On Boundary Layers
NASA Tech Briefs ; 16 , 6
1992-06-01
Miscellaneous
No indication
English
A transition prediction model for boundary layers subjected to free-stream turbulence
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