標題: An investigation of unsteady flow reversal of natural convection in vertical parallel plates by the modified local one-dimensional inviscid relations method
作者: Fu, Wu-Shung
Huang, Shang-Hao
Li, Chung-Gang
機械工程學系
Department of Mechanical Engineering
關鍵字: Unsteady flow reversal;Natural Convection;Vertical parallel plates;Non-reflecting boundary
公開日期: 1-Jul-2015
摘要: An unsteady flow reversal of natural convection in vertical parallel plates with an asymmetrically heated wall is investigated numerically. For clarifying the occurrence of flow reversal, the width of the plates is regarded as a variable, and the non-reflecting boundary condition is adopted at apertures. The methods of the Roe scheme, preconditioning and dual time stepping matching LUSGS are siinultaneously used to solve governing equations which are available for a low speed compressible flow problem. The flow reversal is observed under broad width situations and absent under narrow width situations. Distributions of the pressure differences at the apertures are revealed to indicate the occurrence of flow reversal. The present Nusselt numbers, which mean time and area-averaged ones, display relatively good agreement with those of the existing works. (C) 2015 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2015.02.032
http://hdl.handle.net/11536/124769
ISSN: 0017-9310
DOI: 10.1016/j.ijheatmasstransfer.2015.02.032
期刊: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume: 86
起始頁: 124
結束頁: 138
Appears in Collections:Articles