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TECHNICAL PAPERS

Development and Application of an Anisotropic Two-Equation Model for Flows With Swirl and Curvature

[+] Author and Article Information
Xiaohua Wang1

Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030

Siva Thangam

Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030

1

Corresponding author. Now at Hatch Mott MacDonald, New York, NY 10016.

J. Appl. Mech 73(3), 397-404 (Nov 04, 2005) (8 pages) doi:10.1115/1.2151209 History: Received February 27, 2004; Revised November 04, 2005

An anisotropic two-equation model is developed through a novel technique that involves the representation of the energy spectrum and invariance based scaling. In this approach the effect of rotation is used to modify the energy spectrum, while the influence of swirl is modeled based on scaling laws. The resulting generalized two-equation turbulence model is validated for several benchmark turbulent flows with swirl and curvature.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

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Figure 1

Flow configuration of an axially rotating pipe

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Figure 2

Axial velocity profiles at an axially rotating pipe flow for swirl strength N=0.5,1: curves, present computations; symbols, experiments by Imao and Itoh (14)

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Figure 3

Tangential velocity profiles at an axially rotating pipe flow for swirl strength N=0.5,1: curves, present computations; symbols, experiments by Imao and Itoh (14)

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Figure 4

Reynolds shear stress ux′ur′¯(τrz) profiles at an axially rotating pipe flow for swirl strength N=0.5,1: curves, present computations; symbols, experiments by Imao and Itoh (14)

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Figure 5

Schematic of a curved channel

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Figure 6

Mean velocity profiles in fully developed curved channel flow: 엯, experiments by Eskinazi and Yeh (34); curve, present computations

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Figure 7

Turbulence intensities in fully developed curved channel flow: symbols, experiments by Eskinazi and Yeh (34); curves, present computations

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