Chemical Reaction Effects on an Unsteady MHD Mixed Convective and Radiative Boundary Layer Flow over a Circular Cylinder
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 229
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شناسه ملی سند علمی:
JR_JAFM-9-6_023
تاریخ نمایه سازی: 3 بهمن 1400
چکیده مقاله:
A mathematical model is presented for an optically dense fluid past an isothermal circular cylinder with chemical reaction taking place in it. A constant, static, magnetic field is applied transverse to the cylinder surface. The cylinder surface is maintained at a constant temperature. New variables are introduced to transform the complex geometry into a simple shape and the boundary layer conservation equations, which are parabolic in nature, are normalized into non-similar form and then solved numerically with the well-tested, efficient, implicit, Crank-Nicolson finite difference scheme. Numerical computations are made and the effects of the various material parameters on the velocity, temperature and concentration as well as the surface skin friction and surface heat and mass transfer rates are illustrated graphs and tables. Increasing magnetohydrodynamic body force parameter (M) is found to decelerate the flow but enhance temperatures. Thermal radiation is seen to reduce both velocity and temperature in the boundary layer. Local Nusselt number is also found to be enhanced with increasing radiation parameter.
کلیدواژه ها:
Circular cylinder ، Magnetohydrodynamics ، Chemical reaction ، Unsteady flow ، Heat and mass transfer
نویسندگان
T. Poornima
Department of Mathematics (SAS),VIT University, Chennai-۶۰۰۱۲۷, India.
P. Sreenivasulu
Department of Mathematics (HAS), SVCET, Chittoor-۵۱۷۱۲۷,AP, India
N. Bhaskar Reddy
Department of Mathematics,Sri Venkateswara University, Tirupati-۵۱۷۵۰۲,Ap,India.