Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7059160 | International Journal of Heat and Mass Transfer | 2013 | 6 Pages |
Abstract
This work allows to quantify the transient natural-convection heat transfer taking place in air-filled convective diode cavities. The results are presented in terms of Nusselt-Rayleigh-Fourier numbers correlations. They are valid for the specific configuration of the hot wall that consists of three horizontal, isothermal discrete bands separated by two adiabatic ones of the same dimensions. The channel that connects the hot and cold walls is adiabatic and is inclined between â60° and +60° with respect to the horizontal. The correlations proposed are obtained from numerical results based on the finite volume method and are validated by measurements. They complement those obtained in a previous work for steady state and Rayleigh number in the range 1.84 Ã 105 ⩽ Ra ⩽ 1.70 Ã 109, which make them suitable for applications in several industrial sectors.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
A. Baïri, J.M. GarcÃa de MarÃa,