On near-wall collateral flow in skewed turbulent boundary layers

Hebbar, KS (1977) On near-wall collateral flow in skewed turbulent boundary layers. AIAA Journal, 15 (10). pp. 1509-1511. ISSN 0001-1452

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Abstract

Existence of a collateral flowfield in the inner boundary layer region very close to the wall is probed. The near-wall region of a three-dimensional turbulent air boundary layer relaxing in a nominally zero external pressure gradient behind a transverse hump faired into the sidewall of a low-speed wind tunnel. Hot-wire data and polar plots of mean velocity profile are exhibited. Difficulties in measurement of near-wall skewed flows are indicated. Possible crossflow reversal triggered by slight lateral adverse pressure gradients and producing a collateral layer are considered; in their absence, a noncollateral flowfield in the neighborhood of the wall is found consistent with the equations of motion.

Item Type: Article
Uncontrolled Keywords: Boundary layer flow;Flow distribution;Three dimensional boundary layer;Turbulent boundary layer;Wall flow;Cross flow;Pressure gradients;Velocity distribution;Wind tunnel tests
Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
Depositing User: Users 11 not found.
Date Deposited: 02 May 2006
Last Modified: 24 May 2010 04:10
URI: http://nal-ir.nal.res.in/id/eprint/1198

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