Chemical reaction and thermal radiation effects on MHD micropolar fluid past a stretching sheet embedded in a non-Darcian porous medium

Ramamohan Reddy, L.; Raju, M. C.; Raju, G. S. S.; Ibrahim, S. M.

doi:10.22061/jcarme.2017.582

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	Chemical reaction and thermal radiation effects on MHD micropolar fluid past a stretching sheet embedded in a non-Darcian porous medium
Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 5، دوره 6، شماره 2 - شماره پیاپی 12، فروردین 2017، صفحه 27-46 اصل مقاله (1.01 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2017.582
نویسندگان
L. Ramamohan Reddy¹؛ M. C. Raju^* ²؛ G. S. S. Raju³؛ S. M. Ibrahim⁴
¹Department of Mathematics, Mekapati Rajamohan Reddy Institute of Technology and Science, Udayagiri, Nellore District, A.P, India
²Department of Humanities and Sciences, Annamacharya Institute of Technology and Sciences (Autonomous), Rajampet – 516126, A.P., India
³Department of Mathematics, JNTUA College of Engineering Pulivendula, Pulivendula, A.P, India
⁴Department of Mathematics, GITAM University, Vishakhaptanam, A.P. - 530045 India
تاریخ دریافت: 23 بهمن 1394، تاریخ بازنگری: 14 فروردین 1395، تاریخ پذیرش: 29 فروردین 1395
چکیده
The paper aims at investigating the effects of chemical reaction and thermal radiation on the steady two-dimensional laminar flow of viscous incompressible electrically conducting micropolar fluid past a stretching surface embedded in a non-Darcian porous medium. The radiative heat flux is assumed to follow Rosseland approximation. The governing equations of momentum, angular momentum, energy, and species equations are solved numerically using Runge-Kutta fourth order method with the shooting technique. The effects of various parameters on the velocity, microrotation, temperature and concentration field as well as skin friction coefficient, Nusselt number and Sherwood number are shown graphically and tabulated. It is observed that the micropolar fluid helps the reduction of drag forces and also acts as a cooling agent. It was found that the skin-friction coefficient, heat transfer rate, and mass transfer rate are decreased, and the gradient of angular velocity increases as the inverse Darcy number, porous medium inertia coefficient, or magnetic field parameter increase. Increases in the heat generation/absorption coefficient caused increases in the skin-friction coefficient and decrease the heat transfer rate. It was noticed that the increase in radiation parameter or Prandtl number caused a decrease in the skin-friction coefficient and an increase in the heat transfer rate. In addition, it was found that the increase in Schmidt number and chemical reaction caused a decrease in the skin-friction coefficient and an increase in the mass transfer rate.
کلیدواژه‌ها
MHD؛ Micropolar fluid؛ Chemical reaction؛ Thermal radiation؛ VUMAT subroutine؛ Porous medium

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Chemical reaction and thermal radiation effects on MHD micropolar fluid past a stretching sheet embedded in a non-Darcian porous medium