Numerical analysis of re-oscillation and non-centrosymmetric convection in a porous enclosure due to opposing heat and mass fluxes on the vertical walls

被引：2

作者：

Masuda, Yoshio ^{[1
]}

Yoneya, Michio ^{[1
]}

Suzuki, Akira ^{[1
]}

Kimura, Shigeo ^{[2
]}

Alavyoon, Farid ^{[3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Ctr Compact Chem Proc, Miyagino Ku, Sendai, Miyagi 9838551, Japan

[2] Kanazawa Univ, Dept Mech Syst Engn, Kanazawa, Ishikawa 9208667, Japan

[3] Forsmarks Kraftgrp AB, SE-74203 Osthammar, Sweden

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2010年 / 37卷 / 03期

关键词：

Double diffusion; Porous medium; Buoyancy ratio; Numerical simulation; Peculiar convection pattern; DOUBLE-DIFFUSIVE CONVECTION; NATURAL-CONVECTION; BUOYANCY FORCES;

D O I：

10.1016/j.icheatmasstransfer.2009.11.008

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Two peculiar convection patterns-re-oscillation and stable non-centrosymmetric convection-are observed when two-dimensional double-diffusive convection in a porous enclosure (aspect ratio=1.5) is analysed numerically. The top and bottom walls of the enclosure are insulated; constant and opposing heat and mass fluxes are prescribed on the vertical walls. Re-oscillation occurs when the convection pattern changes from centrosymmetric to non-centrosymmetric. When the buoyancy ratio, which generates re-oscillation convection, is marginally lower, the convection pattern changes to stable non-centrosymmetric. These two convection patterns can be observed only for limited values of the Rayleigh number, Lewis number, and buoyancy ratio. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：250 / 255

页数：6

共 15 条

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Masuda, Yoshio
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[J]. APPLIED SCIENCES-BASEL, 2021, 11 (21):
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[10] Numerical solution for natural convection fluid flow along a vertical cone with variable diffusivity and wall heat and mass fluxes embedded in a porous medium
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