Turbulence management by active wall for fully developed two-dimensional boundary layer AIAA-87-1233

Sengupta, SK and Suryanarayana, GK and Selvarajan, S (1987) Turbulence management by active wall for fully developed two-dimensional boundary layer AIAA-87-1233. In: AIAA 19th Fluid Dynamics, Plasma Dynamics amp; Lasers Conference, 8-10, Jun 1987, Honolulu, Hawaii.

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Abstract

Fully developed two-dimensional incompressible13; turbulent boundary lbvers in the13; presence of pressure gradient over moving13; wavy surfaces for the case of driven wall13; motion is studied numerically. The cmput13; ted solution indicates strong interaction13; between the unsteady wave-induced flow and13; the time averaged rean flow at a certajn13; discrete wavenumber for a given phase13; speed of the driven interface. Both favourable13; and adverse pressure gradient cases13; indicate skin friction reduction. However,13; for the adverse pressure gradient case,13; the interaction becomes stroncer, tending13; to drastically reduce the skin friction13; and in certain rases, converged results13; are not obtained for high wavenumbers13; irrespective of their amplitudes. However,13; the present approach indicates a possible13; management of viscous drag in a qualitative13; way.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Two-Dimensional Boundary Layer;viscous drag
Subjects: AERONAUTICS > Aircraft Design, Testing & Performance
Depositing User: Users 15 not found.
Date Deposited: 07 Mar 2006
Last Modified: 24 May 2010 04:10
URI: http://nal-ir.nal.res.in/id/eprint/1075

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