The effects of chemical reaction,Hall and ion-slip currents on MHD flow with temperature dependent viscosity and thermal diffusivity |
| |
| Authors: | Nasser S. Elgazery |
| |
| Affiliation: | 1. Department of Mechanical Engineering, Mazandaran university of science and Technology, Babol, Iran;2. Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran;1. Department of Mechanical Engineering, Lean Production Engineering Research Center, Ferdowsi University of Mashhad, P.O. Box 91775-1111, Mashhad, Iran;2. Young Researchers & Elite Club, Hamedan Branch, Islamic Azad University, Hamedan, Iran;3. Mechanical Engineering Department, Engineering Faculty of Bu-Ali Sina University, Hamedan, Iran;4. University of Michigan–Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai, People''s Republic of China;1. Department of Mechanical Engineering, Babol University of Technology, P.O. Box 484, Babol, Islamic Republic of Iran;2. Esfarayen University, Engineering and Technical College, Department of Mechanical Engineering, Esfarayen, North Khorasan, Iran;3. Department of Mechanical Engineering, University of Mazandaran, Babolsar, Iran |
| |
| Abstract: | In this paper, the problem of magneto-micropolar fluid flow, heat and mass transfer with suction and blowing through a porous medium is analyzed numerically. This problem was studied under the effects of chemical reaction, Hall, ion-slip currents, variable viscosity and variable thermal diffusivity. The governing fundamental equations are approximated by a system of non-linear ordinary differential equation. This system is solved numerically by using the Chebyshev pseudospectral method. Details of the velocities, temperature and concentration fields as well as the local skin-friction, the local Nusselt number and the local Sherwood number for the various values of the parameters of the problem are presented. The numerical results indicate that, the concentration decreases as the permeability parameter, the chemical reaction parameter and Schmidt number increase and it increases as variable viscosity and variable thermal diffusivity increase. The local Nusselt number and the local Sherwood number decrease as the magnetic field and ion-slip current parameters increase, whereas they increase as Hall current parameter increases. Also, there is a (non-linear) strong dependency of the concentration gradient at the wall on both Schmidt number and the mass transfer parameter. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
