Numerical simulation of turbulent boundary layers over rigid and deformable surfaces

Sengupta, TK and Selvarajan, S and Suryanarayana, GK (1987) Numerical simulation of turbulent boundary layers over rigid and deformable surfaces. In: Proceedings of the 5th International Conference on Numerical methods in laminar and turbulent flow, 6-10 July 1987, Canada, United States.

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Abstract

A numerical procedure for two-dimensional incompressible fully developed turbulent boundary layers over rigid and deformable surfaces is used to investigate the effects of a certain class of simulated periodic surfaces, e.g., sinusoidal, triangular and rectangular shapes. The computation involves solution of a boundary layer equation coupled with a system of Orr- Sommerfeld type of equations describing the deviation of the flow field from the time mean flow and which feeds back wave induced stresses to the calculation of boundary layer flow. The disturbance flow is solved in a wave following coordinate system and results of the coupled iterated solutions indicate the possibility of existence of strong interaction between the time mean and disturbance and a resultant drag benefit.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Boundary layer equations;Drag reduction;Solid surfacesFlow geometry;Incompressible boundary layer;Rigid structures;Two dimensional boundary layer
Subjects: AERONAUTICS > Aeronautics (General)
Division/Department: Fluid Dynamics, Experimental Aerodynamics Division, National Trisonic Aerodynamic Facility
Depositing User: M/S ICAST NAL
Date Deposited: 10 Oct 2006
Last Modified: 24 May 2010 09:51
URI: http://nal-ir.nal.res.in/id/eprint/2950

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