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TECHNICAL PAPERS: Natural and Mixed Convection

An Experimental Study on Mixed Convection in a Horizontal Rectangular Channel Heated From a Side

[+] Author and Article Information
C. Gau, Y. C. Jeng, C. G. Liu

Institute of Aeronautics and Astronautics, National Cheng Kung University, Tainan 70101, Taiwan, R.O.C.

J. Heat Transfer 122(4), 701-707 (May 01, 2000) (7 pages) doi:10.1115/1.1318211 History: Received June 11, 1999; Revised May 01, 2000
Copyright © 2000 by ASME
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References

Figures

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Schematic diagram of the channel: 1) wind tunnel, 2) slot for smoke injection, 3) stainless steel foil, 4) 12 rows of thermocouples in the transverse direction
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Flow structure from the end view with Re=500 and Gr/Re2=7700 at (a) x=10 cm, (b) x=20 cm, and (c) x=30 cm
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Flow structure from the side view with Re=500 and (a) Gr/Re2=1000, (b) Gr/Re2=2000, (c) Gr/Re2=6000, and (d) Gr/Re2=7700
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Flow structure from the side view with Gr/Re2=2000 and (a) Re=500, (b) Re=700, and (c) Re=1000
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The Nusselt number contours on the heated side wall with Gr/Re2=6000 and Re=500
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The normalized Nusselt number distributions at different Reynolds numbers with (a) Gr/Re2 very close to 1000 and (b) Gr/Re2 very close to 2000
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The normalized Nusselt number distributions at different buoyancy parameters with (a) Re=500 and (b) Re=1000
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The normalized Nusselt number distributions at different buoyancy parameters by changing the Reynolds numbers with (a) Gr=2.4×108 and (b) Gr=1.92×109
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Comparison of the normalized Nusselt numbers between the case of a vertical channel heated from the side and the case of horizontal channel heated from a side
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Comparison of (a) the normalized Nusselt number contour measured with (b) the predicted with Eq. (2) (with n=3) at Re=500 and Gr/Re2=4000
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Comparison of the average Nusselt numbers measured with the predicted with Eq. (2) (with n=4) at different buoyancy parameters and Gr=9.61×108
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Correlation of the normalized Nusselt numbers in terms of the buoyancy parameter and the nondimensional axial distance
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Correlation of the average Nusselt numbers in terms of the buoyancy parameter

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