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Advances in Heat Transfer Engineering

ISBN:
1-56700-198-1 (印刷)

NUMERICAL STUDY OF LAMINAR FREE CONVECTION FLOWS IN A VERTICAL STACK OF PARALLELOGRAMMIC PARTIAL ENCLOSURES

Vitor Costa
Universidade de Aveiro

M. S. A. Oliveira
Universidade de Aveiro, Departamento de Engenharia Mecânica, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal

Antonio C. M. Sousa
Departamento de Engenharia Mecânica; Universidade de Aveiro;Campus Universitário de Santiago; 3810-193 Aveiro-Portugal; and Department of Mechanical Engineering; University of New Brunswick; Fredericton, NB, Canada E3B 5A3

要約

Laminar natural convection within a tall, differentially heated enclosure of aspect ratio of 5, and subdivided in five compartments by partial partitions (shutters) is studied numerically. The partitions, although thin, are of finite thickness, and they participate in the overall convective heat transfer process (conjugate problem). The results are presented in terms of a normalized Nusselt number as a function of the Rayleigh number (103:107), the partitions' angle (60° : −60°), and the thermal conductivity ratio (1:1000), respectively.