Entropy Generation Analysis for Stagnation Point Flow in a Porous Medium over a Permeable Stretching Surface
Publish place: Journal of Applied Fluid Mechanics، Vol: 8، Issue: 4
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JAFM-8-4_013
تاریخ نمایه سازی: 5 بهمن 1400
Abstract:
This paper presents entropy generation analysis for stagnation point flow in a porous medium over a permeable stretching surface with heat generation/absorption and convective boundary condition. We have used Von Karman transformations to transform the governing equations into ordinary differential equations.Thevelocity, temperature and concentration profiles obtained using the Homotopy Analysis Method. The HAM is a valid mathematical tool for most of non-linear problems in science and engineering. Finally we have computed the entropy generation number. The effect of the Prandtl number, Brinkman number, Reynolds number, suction/injection parameter, Biot number, Lewis number, Brownian motion parameter, thermophoresisparameterand constant parameters on velocity, concentration and temperature profiles are analyzed. Moreover the influences of the Reynolds number and Brinkman number on the entropy generation are presented.The entropy generation number increases with increasing the Brinkman and Reynolds number.
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Authors
M. M. Rashidi
Mechanical Engineering Department, Engineering Faculty of Bu-Ali Sina University, Hamedan, Iran
F. Mohammadi
Mechanical Engineering Department, Engineering Faculty of Bu-Ali Sina University, Hamedan, Iran
S. Abbasbandy
Departments of Mathematics, Imam Khomeini, International University, Qazvin, Iran
M. S. Alhuthali
Departments of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah ۲۱۵۸۹, Saudi Arabia