scholarly journals Effects of Various Shaped Roughness Elements in Two-Dimensional High Reynolds Number Turbulent Boundary Layers

2004 ◽  
Author(s):  
Jeremy L. Bennington ◽  
Roger L. Simpson
Keyword(s):  
Reynolds Number ◽  
Boundary Layers ◽  
High Reynolds Number ◽  
Turbulent Boundary Layers ◽  
Two Dimensional ◽  
Roughness Elements ◽  
High Reynolds

Experimental investigation of turbulent boundary layers at high Reynolds number with uniform blowing, part I: statistics

2020 ◽  
Vol 21 (3) ◽  
pp. 129-165
Author(s):  
G. Hasanuzzaman ◽  
S. Merbold ◽  
C. Cuvier ◽  
V. Motuz ◽  
J.-M. Foucaut ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Reynolds Number ◽  
Boundary Layers ◽  
High Reynolds Number ◽  
Turbulent Boundary Layers ◽  
High Reynolds

The wall-pressure spectrum of high-Reynolds-number turbulent boundary-layer flows over rough surfaces

2015 ◽  
Vol 768 ◽  
pp. 261-293 ◽  
Author(s):  
Timothy Meyers ◽  
Jonathan B. Forest ◽  
William J. Devenport
Keyword(s):  
Boundary Layer ◽  
Reynolds Number ◽  
Boundary Layers ◽  
High Reynolds Number ◽  
Wall Pressure ◽  
Boundary Layer Flows ◽  
High Frequency Region ◽  
Pressure Drag ◽  
Roughness Elements ◽  
High Reynolds

Experiments have been performed on a series of high-Reynolds-number flat-plate turbulent boundary layers formed over rough and smooth walls. The boundary layers were fully rough, yet the elements remained a very small fraction $({<}1.4\,\%)$ of the boundary-layer thickness, ensuring conditions free of transitional effects. The wall-pressure spectrum and its scaling were studied in detail. One of the major findings is that the rough-wall turbulent pressure spectrum at vehicle relevant conditions is comprised of three scaling regions. These include a newly discovered high-frequency region where the pressure spectrum has a viscous scaling controlled by the friction velocity, adjusted to exclude the pressure drag on the roughness elements.

On the structure of high-Reynolds-number supersonic turbulent boundary layers

1991 ◽  
Vol 222 (-1) ◽  
pp. 293 ◽  
Author(s):  
Eric F. Spina ◽  
John F. Donovan ◽  
Alexander J. Smits
Keyword(s):  
Reynolds Number ◽  
Boundary Layers ◽  
High Reynolds Number ◽  
Turbulent Boundary Layers ◽  
High Reynolds
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