Unsteady hydromagnetic chemically reacting mixed convection flow over a permeable stretching surface with slip and thermal radiation

详细信息    查看全文

• 作者：Mitiku Daba^a ; ^{mitbru2007@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Ponnaian Devaraj^b ; ^{devaraj@annauniv.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Mixed convection ; Double diffusion ; Chemical reaction ; Keller box method ; Magnetic field ; Buoyancy force
• 刊名：Journal of the Nigerian Mathematical Society
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：35
• 期：1
• 页码：245-256
• 全文大小：666 K

文摘

The present investigation deals with unsteady hydromagnetic chemically reacting mixed convection flow of incompressible viscous fluid past a vertically moving permeable stretching sheet in the presence of suction/injection, heat source/absorption, thermal radiation, viscous dissipation and slip effects. The governing partial differential equations are reduced into a set of non-linear ordinary differential equations by suitable transformations. Keller box method is applied to solve the system of non-linear ordinary differential equations for which the implementation is made with the help of matlab. The important parameters in this study are: Prandtl number Pr$Pr$, Schmidt number Sc$Sc$, buoyancy force parameter λ$\lambda$, radiation parameter Nr$Nr$, magnetic parameter M$M$, buoyancy forces ratio parameter N$N$, the unsteady parameter A$A$, suction/injection parameter s$s$, Eckert number Ec$Ec$, heat source/sink parameter Q$Q$, chemical reaction parameter R$R$, velocity slip parameter s_v$s_v$, temperature slip parameter s_t$s_t$ and species concentration slip parameter s_m$s_m$. Effects of these parameters on velocity, temperature and species concentration profile of the fluid are presented and analyzed graphically. Furthermore, numerical investigations have been made for the skin friction coefficient and surface heat and mass transfer rates for some of the parameters.