A case for turbulence management by imposed wall excitation for fully developed turbulent flows - A numerical study

Sengupta, TK and Suryanarayana, GK and Selvarajan, S (1987) A case for turbulence management by imposed wall excitation for fully developed turbulent flows - A numerical study. In: IUTAM Symposium on Turbulence management and relaminarisation, 13-23 Jan 1987, Bangalore, India.

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Abstract

The use of progressive-wave-train wall motion to reduce turbulence in the boundary-layer flow over the wall is investigated by means of numerical simulations. The formulation of the governing equations is outlined; the numerical implementation of the model is briefly explained; and results are presented in graphs. It is shown that the wall motion parameters can be chosen to maximize interaction between the wall excitation modes and the natural mode of the fluid system; particular attention is given to the possibility of turbulence reduction under near-resonance conditions. (T.K.)

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Boundary layer control;Computational fluid dynamics; Turbulent flow;Wall flow;Drag reduction;Orr sommerfeld equations;Oscilllating flow;Pressure Gradients;Two dimensional flow
Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
Division/Department: Fluid Dynamics, National Trisonic Aerodynamic Facility, Aerodynamics
Depositing User: M/S ICAST NAL
Date Deposited: 16 Oct 2006
Last Modified: 24 May 2010 09:51
URI: http://nal-ir.nal.res.in/id/eprint/2984

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