Khan Arshad, Ul Karim Faizan, Khan Ilyas, Alkanhal Tawfeeq Abdullah, Ali Farhad, Khan Dolat, Nisar Kottakkaran Sooppy
Institute of Business and Management Sciences, the University of Agriculture, Peshawar 25000, Pakistan.
Department of Mathematics, City University of Science and Information Technology, Peshawar 25000, Pakistan.
Entropy (Basel). 2019 Apr 3;21(4):359. doi: 10.3390/e21040359.
The current work will describe the entropy generation in an unsteady magnetohydrodynamic (MHD) flow with a combined influence of mass and heat transfer through a porous medium. It will consider the flow in the plane and the plate with isothermal and ramped wall temperature. The wall shear stress is also considered. The influences of different pertinent parameters on velocity, the Bejan number and on the total entropy generation number are reported graphically. Entropy generation in the fluid is controlled and reduced on the boundary by using wall shear stress. It is observed in this paper that by taking suitable values of pertinent parameters, the energy losses in the system can be minimized. These parameters are the Schmitt number, mass diffusion parameter, Prandtl number, Grashof number, magnetic parameter and modified Grashof number. These results will play an important role in the heat flow of uncertainty and must, therefore, be controlled and managed effectively.
当前的工作将描述在具有通过多孔介质进行质量和热传递综合影响的非稳态磁流体动力学（MHD）流动中的熵产生。它将考虑在平面内以及具有等温和平变壁温的平板中的流动。还考虑了壁面剪应力。以图形方式报告了不同相关参数对速度、贝扬数和总熵产生数的影响。通过使用壁面剪应力，流体中的熵产生在边界处得到控制和降低。本文观察到，通过采用相关参数的合适值，可以使系统中的能量损失最小化。这些参数是施密特数、质量扩散参数、普朗特数、格拉晓夫数、磁参数和修正格拉晓夫数。这些结果将在不确定性热流中发挥重要作用，因此必须有效地进行控制和管理。
