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Главная Архив Thermal Letter Оргкомитет Будущие конференции AIHTC
International Heat Transfer Conference 12

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

Passive cooling of cylindrical bodies in an enclosed space with openings

Vadim Dubovsky
Heat Transfer Laboratory, Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel

Gennady Ziskind
Heat Transfer Laboratory, Department of Mechanical Engineering, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel

Yeshayahu Weiss
N.R.C.Negev P.O. Box 9001 Beer-sheva, 84190 ISRAEL; Heat Transfer Laboratory, Department of Mechanical Engineering, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel

Joseph Aharon
Department of Mechanical Engineering, Ben-Gurion University of the Negev Beer - Sheva, Israel; NRCN, P.O.B. 9001, Beer-Sheva, Israel

Michal Katz
Heat Transfer Laboratory, Department of Mechanical Engineering, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel

Ruth Letan
Heat Transfer Laboratory, Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel

DOI: 10.1615/IHTC12.1470
6 pages

Аннотация

This paper deals with passive cooling by natural and induced convection of a vertical cylinder and an array of vertical cylinders in an enclosed space with openings. A laboratory-scale model is studied both experimentally and numerically. Two configurations of the enclosure are explored. The first, asymmetrical, configuration has its inlet port at the bottom of the sidewall of the enclosure. The outlet port is at the top of the opposite sidewall. The other configuration, which is symmetrical, has two inlet ports and one outlet port. The outlet port is at the middle of the upper cover. A vertical cylinder or an array of cylinders is placed on the bottom of the enclosure.
In the numerical study, various arrays of cylinders are explored. We start with a single heated cylinder, placed at various locations relating to the ports and to the axes of symmetry of the enclosure. Then, a row of cylinders placed in-line along the axis of symmetry is considered. Finally, a two-dimensional array of cylinders is studied. Experimental investigation is performed in order to verify the results of the numerical study. Comparison of the experimental results with numerical predictions is presented and discussed.

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