Combined Solutal and Thermal Buoyancy Thermocapillary Convection in a Square Open Cavity
Combined solutal and thermal buoyancy–thermocapillary convection in a square open cavity is studied numerically in the present article. The Forchheimer–Brinkman-extended Darcy model is used in the mathematical formulation for the porous layer and the COMSOL Multiphysics software is applied to solve...
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Isfahan University of Technology
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doaj-b152d104d49d4dd5ab770e320ec6a1ec2020-11-25T02:10:50ZengIsfahan University of Technology Journal of Applied Fluid Mechanics1735-35722017-01-0110411131124.Combined Solutal and Thermal Buoyancy Thermocapillary Convection in a Square Open CavityA. Alhashash0H. Saleh1Al-Jouf UniversityUniversiti Kebangsaan MalaysiaCombined solutal and thermal buoyancy–thermocapillary convection in a square open cavity is studied numerically in the present article. The Forchheimer–Brinkman-extended Darcy model is used in the mathematical formulation for the porous layer and the COMSOL Multiphysics software is applied to solve the dimensionless governing equations. The governing parameters considered are the thermal Marangoni number, −1000 ≤ Ma_T ≤ 1000, the Darcy number, 10−5 ≤ Da ≤ 10−2, the porosity of porous medium, 0.4 ≤ ε ≤ 0.99 and the Lewis number, 10 ≤ Le ≤ 200. It is found that the global heat and solute transfer rate decreases by reducing the counteracting surface tension force and increases by augmenting the surface tension force. The minimum values of the global heat and solute transfer rate were obtained about Ma_T = −90 for the all porosities.http://jafmonline.net/JournalArchive/download?file_ID=42962&issue_ID=241Marangoni convection; Natural convection; Porous cavity; Forchheimer brinkman model. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A. Alhashash H. Saleh |
spellingShingle |
A. Alhashash H. Saleh Combined Solutal and Thermal Buoyancy Thermocapillary Convection in a Square Open Cavity Journal of Applied Fluid Mechanics Marangoni convection; Natural convection; Porous cavity; Forchheimer brinkman model. |
author_facet |
A. Alhashash H. Saleh |
author_sort |
A. Alhashash |
title |
Combined Solutal and Thermal Buoyancy Thermocapillary Convection in a Square Open Cavity |
title_short |
Combined Solutal and Thermal Buoyancy Thermocapillary Convection in a Square Open Cavity |
title_full |
Combined Solutal and Thermal Buoyancy Thermocapillary Convection in a Square Open Cavity |
title_fullStr |
Combined Solutal and Thermal Buoyancy Thermocapillary Convection in a Square Open Cavity |
title_full_unstemmed |
Combined Solutal and Thermal Buoyancy Thermocapillary Convection in a Square Open Cavity |
title_sort |
combined solutal and thermal buoyancy thermocapillary convection in a square open cavity |
publisher |
Isfahan University of Technology |
series |
Journal of Applied Fluid Mechanics |
issn |
1735-3572 |
publishDate |
2017-01-01 |
description |
Combined solutal and thermal buoyancy–thermocapillary convection in a square open cavity is studied numerically in the present article. The Forchheimer–Brinkman-extended Darcy model is used in the mathematical formulation for the porous layer and the COMSOL Multiphysics software is applied to solve the dimensionless governing equations. The governing parameters considered are the thermal Marangoni number, −1000 ≤ Ma_T ≤ 1000, the Darcy number, 10−5 ≤ Da ≤ 10−2, the porosity of porous medium, 0.4 ≤ ε ≤ 0.99 and the Lewis number, 10 ≤ Le ≤ 200. It is found that the global heat and solute transfer rate decreases by reducing the counteracting surface tension force and increases by augmenting the surface tension force. The minimum values of the global heat and solute transfer rate were obtained about Ma_T = −90 for the all porosities. |
topic |
Marangoni convection; Natural convection; Porous cavity; Forchheimer brinkman model. |
url |
http://jafmonline.net/JournalArchive/download?file_ID=42962&issue_ID=241 |
work_keys_str_mv |
AT aalhashash combinedsolutalandthermalbuoyancythermocapillaryconvectioninasquareopencavity AT hsaleh combinedsolutalandthermalbuoyancythermocapillaryconvectioninasquareopencavity |
_version_ |
1724917120106496000 |