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TECHNICAL PAPERS: Natural and Mixed Convection

Effect of Partition Wall on Natural Convection Heat Transfer in a Vertical Air Layer

[+] Author and Article Information
Yoshiyuki Yamaguchi, Yutaka Asako

Department of Mechanical Engineering, Tokyo Metropolitan University, 1-1, Minami-Osawa, Hachioji, Tokyo, 192-0397 Japan

J. Heat Transfer 123(3), 441-449 (Jan 05, 2001) (9 pages) doi:10.1115/1.1370515 History: Received February 01, 2000; Revised January 05, 2001
Copyright © 2001 by ASME
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References

Cane,  R. L. D., Hollands,  K. G., Raithby,  G. D., and Unny,  T. E., 1977, “Free Convection Heat Transfer Across Inclined Honeycomb Panels,” ASME J. Heat Transfer, 99, pp. 86–91.
Meyer,  B. A., Mitchell,  J. W., and El-Wakil,  M. M., 1979, “Natural Convection Heat Transfer in Moderate Aspect Ratio Enclosures,” ASME J. Heat Transfer, 101, pp. 955–659.
Nakamura,  H., and Asako,  Y., 1980, “Heat Transfer in a Parallelogram Shaped Enclosure (1st Report, Heat Transfer by Free Convection),” Bull. JSME, 23, pp. 1827–1834.
Ostrach,  S., 1988, “Natural Convection in Enclosures,” ASME J. Heat Transfer, 110, pp. 1175–1190.
Asako,  Y., and Nakamura,  H., 1982, “Heat Transfer in a Parallelogram Shaped Enclosure (2nd Report, Free Convection in Infinitely Stacked Parallelogram Shaped Enclosure),” Bull. JSME, 25, pp. 1412–1418.
ElSherbiny,  S. M., Hollands,  K. G., and Raithby,  G. D., 1982, “Effect of Thermal Boundary Conditions on Natural Convection in Vertical and Inclined Air Layers,” ASME J. Heat Transfer, 104, pp. 513–520.
Kim,  D. M., and Viskanta,  R., 1985, “Effect of Wall Heat Conduction on Natural Convection Heat Transfer in a Square Enclosure,” ASME J. Heat Transfer, 107, pp. 137–146.
Meyer,  B. A., Mitchell,  J. W., and El-Wakil,  M. M., 1982, “The Effect of Thermal Wall Properties on Natural Convection in Inclines Rectangular Cells,” ASME J. Heat Transfer, 104, pp. 111–117.
Okada,  M., and Okano,  H., 1986, “Natural Convection Heat Transfer in a Rectangular Cell Enclosed with Vertical Walls and Plate-Fins,” Trans. Jpn. Soc. Mech. Eng., Ser. B, 52, pp. 2158–2163.
Fusegi, T., Hyun, J. M., and Kuwahara, K., 1992, “Three-Dimensional Natural Convection in a Cubical Enclosure with Walls of Finite Conductance,” Natural/Forced Convection and Combustion Simulation: 2nd Int. Conf Adv Comput Method Heat Transfer, pp. 109–126.
Patankar,  S. V., 1981, “A Calculation Procedure for Two-Dimensional Elliptic Situations,” Numer. Heat Transfer, 4, pp. 409–425.
Patankar, S. V., 1980, Numerical Heat Transfer and Fluid Flow, Hemisphere, Washington, DC.

Figures

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Schematic diagram of a vertical air slot with a latticed partition wall
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The calculation domain and coordinates
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Main grid points near the partition wall
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Temperature Distribution in the Cell; for Ra=105; (a) δwall/L=10−3 and kwall/kair=1; (b) δwall/L=0.1 and kwall/kair=1; (c) δwall/L=10−3 and kwall/kair=103; and (d) δwall/L=0.1 and kwall/kair=103.
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Vertical velocity profiles in the Cell; for Ra=105; (a) δwall/L=10−3 and kwall/kair=1; (b) δwall/L=0.1 and kwall/kair=1; (c) δwall/L=10−3 and kwall/kair=103; and (d) δwall/L=0.1 and kwall/kair=103.
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Temperatures on the surfaces of the top and bottom wall; for Ra=105 and (δwall/L)⋅(kwall/kair)=1; (a) δwall/L=0.1 and kwall/kair=10; (b) δwall/L=10−2 and kwall/kair=102; and (c) δwall/L=10−3 and kwall/kair=103.
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Contours of Num as a function of δwall/L and kwall/kair; (a) Ra=104; (b) Ra=105.
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Contours of Num on log-log plots of δwall/L and kwall/kair; (a) Ra=104; (b) Ra=105.
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Contours of Qwall/Qtotal on log-log plots of δwall/L and kwall/kair; (a) Ra=104; (b) Ra=105.
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Qwall/Qtotal as a function of (δwall/L)⋅(kwall/kair) for H/L=1

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