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 |
| Division/Department: | Aerodynamics, Aerodynamics, Aerodynamics |
| Depositing User: | Mrs Manoranjitha M D |
| Date Deposited: | 07 Mar 2006 |
| Last Modified: | 24 May 2010 09:40 |
| URI: | http://nal-ir.nal.res.in/id/eprint/1075 |
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