Turbulent near-wake studies behind an infinitely swept wing

Subaschandar, N and Prabhu, A (2002) Turbulent near-wake studies behind an infinitely swept wing. Journal of Aircraft, 39 (2). pp. 290-295. ISSN 0021-8669

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The 3D asymmetric turbulent near-wake behind an infinitely swept wing with a GAW(2) airfoil has been investigated at low speeds. The near-wake in the present study is asymmetric because the boundary layers on the top and bottom surfaces of the model develop under different streamwise pressure gradients. Distributions of mean velocity, three turbulent normal stresses, and two important Reynolds shear stresses have been measured using hot-wire anemometry. The profiles of mean velocity and Reynolds shear stress exhibit asymmetry near the trailing edge and seem to have become symmetric within a short distance of 60 trailing edge momentum thicknesses. Results of computation using the K-epsilon turbulence model with a simple scheme to predict the near-wake behind the swept wing are also presented and compared with the experimental data. The agreement of the predicted mean flow development with the experiment is fair, considering the simplicity of the scheme.

Item Type: Article
Additional Information: Copyright for this article belongs to AIAA
Uncontrolled Keywords: Swept wings;Turbulent wakes;Near wakes;K-epsilon turbulence model;Pressure gradients;Trailing edges; Reynolds stress; Hot-wire anemometers;Shear stress
Subjects: AERONAUTICS > Aerodynamics
Depositing User: Mr. Ravikumar R
Date Deposited: 06 Sep 2006
Last Modified: 24 May 2010 04:20
URI: http://nal-ir.nal.res.in/id/eprint/2652

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