Mirzaei Amirmohammad, Jalili Bahram, Jalili Payam, Ganji Davood Domiri
Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.
Department of Mechanical Engineering, North Tehran Branch, Islamic Azad University, Tehran, Iran.
Sci Rep. 2024 Jun 19;14(1):14152. doi: 10.1038/s41598-024-64850-7.
Natural convection in a square porous cavity with a partial magnetic field is investigated in this work. The magnetic field enters a part of the left wall horizontally. The horizontal walls of the cavity are thermally insulated. The wave vertical wall on the right side is at a low temperature, while the left wall is at a high temperature. The Brinkman-Forchheimer-extended Darcy equation of motion is utilized in the construction of the fluid flow model for the porous media. The Finite Element Method (FEM) was used to solve the problem's governing equations, and the current study was validated by comparing it to earlier research. On streamlines, isotherms, and Nusselt numbers, changes in the partial magnetic field length, Hartmann number, Rayleigh number, Darcy number, and number of wall waves have been examined. This paper will show that the magnetic field negatively impacts heat transmission. This suggests that the magnetic field can control heat transfer and fluid movement. Additionally, it was shown that heat transfer improved when the number of wall waves increased.
本文研究了具有部分磁场的方形多孔腔内的自然对流。磁场水平进入左壁的一部分。腔的水平壁隔热。右侧的波浪形垂直壁温度较低，而左侧壁温度较高。在构建多孔介质的流体流动模型时，采用了Brinkman-Forchheimer扩展达西运动方程。使用有限元方法（FEM）求解问题的控制方程，并通过与早期研究进行比较来验证当前研究。研究了部分磁场长度、哈特曼数、瑞利数、达西数和壁波数对流线、等温线和努塞尔数的影响。本文将表明磁场对热传递有负面影响。这表明磁场可以控制热传递和流体运动。此外，还表明壁波数增加时热传递得到改善。
