Numerical investigation of entropy generation and Magnetohydronamic natural convection in a porous square cavity with four embedded cylinders

被引：1

作者：

Charreh, D. ^{[1
,4
]}

Islam, Shams-ul ^{[1
]}

Talib, Shaiza ^{[1
]}

Saleem, M. ^{[2
]}

Abbas, Munawwar Ali ^{[3
]}

Ahmad, Shafee ^{[5
]}

机构：

[1] COMSATS Univ Islamabad, Dept Math, Islamabad Campus Pk Rd, Islamabad 45550, Pakistan

[2] CASE Inst Technol, Dept Sci & Humanities Sir Syed, Islamabad 44000, Pakistan

[3] Univ Baltistan, Dept Math, Skardu, Pakistan

[4] Univ Gambia, Dept Math, POB3530, Serrekunda, Gambia

[5] Jiangsu Univ, Dept Energy & Power Engn, Zhenjiang 212013, Peoples R China

来源：

HELIYON | 2024年 / 10卷 / 13期

关键词：

Entropy generation; Natural convection; Finite element method; Porous square cavity; Magnetic field; Embedded cylinders; FLOW; ENCLOSURE;

D O I：

10.1016/j.heliyon.2024.e33897

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this study, we investigated buoyancy-induced convection in a permeable square hollow containing four embedded cylinders and subjected to a magnetic field using numerical methods. The finite element approach was used to solve the governing equations of the system as well as the initial and boundary conditions. We analyzed the effects of the emerging non-dimensional quantities on the flow pattern and thermal field, as well as entropy production, in relation to the thermophysical properties of the obstacles. In the limiting case, we compared our results with already published work and found outstanding concurrence. Our simulations revealed that increasing cylinder spacing leads to higher thermal entropy generation, while fluid friction irreversibility has the opposite effect. Additionally, the imposed magnetic field significantly suppressed temperature distribution and flow field, resulting in low thermal transmission within the cavity.

引用

页数：17