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Two-dimensional turbulent boundary layers over rigid and moving swept wavy surfaces (1986)

Lekoudis, S. G. ; Sengupta, T. K.

[S.l.] : American Institute of Physics (AIP)

Physics of Fluids 29 (1986), S. 964-970

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ISSN: 1089-7666

Source: AIP Digital Archive

Topics: Physics

Notes: The two-dimensional, incompressible, turbulent boundary layer over a flexible wall is analyzed. The wall consists of sinusoidal waves that are swept with respect to the flow direction. The mean flow is a boundary layer with wave-induced stresses. These stresses are evaluated from the solution of the linear problem. It is found that the small mean skin friction reduction, observed for the case of zero sweep, persists. The pressure drag reduces for swept wavy wall from its value for no sweep. There is a small drag reduction for the moving wall cases even for the lowest phase speed considered. Within the assumptions of the turbulence model used, a possible drag reduction mechanism is discussed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.865691

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