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TECHNICAL BRIEFS

Developing Turbulent Forced Convection in Two-Dimensional Duct

[+] Author and Article Information
Y. T. Chen1

Department of Mechanical Engineering, University of Nevada, Las Vegas, NV 89154

J. H. Nie, H. T. Hsieh, R. F. Boehm

Department of Mechanical Engineering, University of Nevada, Las Vegas, NV 89154

B. F. Armaly

Department of Mechanical and Aerospace Engineering, University of Missouri-Rolla, Rolla, MO 65401

1

Corresponding author.

J. Heat Transfer 129(9), 1295-1299 (Oct 24, 2006) (5 pages) doi:10.1115/1.2740659 History: Received December 28, 2005; Revised October 24, 2006

Developing turbulent forced convection flow in a two-dimensional duct is simulated for Reynolds numbers ranging from 4560 to 12,000. Simultaneously developing velocity and temperature distributions are reported by treating the inlet flow as isothermal with uniform velocity profile. The walls are supplied with uniform heat flux. Distributions of the streamwise and the transverse velocity components exhibit a maximum near the walls, but not at the center of the duct, in the developing region of the flow. The friction coefficient and the Nusselt number do not reach the fully developed values monotonously, and a minimum in their distributions appears in the developing region. Some results are compared with the available data, and very favorable comparisons are obtained.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

Comparisons with the DNS data for the mean profiles

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Figure 2

Comparisons of the mean velocity profiles and the Stanton number for the separated convection flow

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Figure 3

Distribution of the Nusselt number for the fully developed turbulent channel flow

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Figure 4

Distributions of the streamwise velocity at several x-planes

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Figure 5

Distributions of the streamwise velocity component (u)

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Figure 6

Distributions of the transverse velocity component at several x-planes

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Figure 7

Distributions of the transverse velocity component (v)

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Figure 8

Distributions of the temperature difference (Tw−T) at several x-planes

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Figure 9

Distributions of the friction coefficient (Cf)

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Figure 10

Distributions of the bulk Nusselt number (Nub)

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