Abstract
An analysis is presented for the problem of free convection with mass transfer flow for a micropolar fluid via a porous medium bounded by a semi-infinite vertical porous plate in the presence of a transverse magnetic field. The plate moves with constant velocity in the longitudinal direction, and the free stream velocity follows an exponentially small perturbation law. A uniform magnetic field acts perpendicularly to the porous surface in which absorbs the micropolar fluid with a suction velocity varying with time. Numerical results of velocity distribution of micropolar fluids are compared with the corresponding flow problems for a Newtonian fluid. Also, the results of the skin-friction coefficient, the couple stress coefficient, the rate of the heat and mass transfers at the wall are prepared with various values of fluid properties and flow conditions.
Similar content being viewed by others
References
Cowling, T. G.: 1957, Magnetohydrodynamics, Interscience Publishers, New York.
El-Amin, M. F.: 2001, Magnetohydrodynamic free convection and mass transfer flow in micropolar fluid with constant suction, J. Magn. Magn. Mater. 234, 567–574.
El-Hakiem, M. A., Mohammadein, A. A., El-Kabeir, S. M. M. and Gorla, R. S. R.: 1999, Joule heating effects on magnetohydrodynamic free convection flow of a micropolar fluid, Int. Commun. Heat Mass Tran. 26(2), 219–227.
Eringen, A. C.: 1966, Theory of micropolar fluids, J. Math. Mech. 16, 1–18.
Kim, Y. J.: 2001, Unsteady convection flow of micropolar fluids past a vertical porous plate embedded in a porous medium, Acta Mech. 148(1–4), 105–116.
Kumari, M.: 1998, MHD flow over a wedge with large blowing rates, Int. J. Eng. Sci. 36(3), 299–314.
Lukaszewicz, G.: 1999, Micropolar Fluids – Theory and Applications, Birkhauser, Boston.
Raptis, A. A.: 1986, Flow through a porous medium in the presence of a magnetic field. Int. J. Energy Res. 10, 97–100.
Rees, D. A. S. and Bassom, A. P.: 1996, The Blasius boundary-layer flow of a micropolar fluid, Int. J. Eng. Sci. 34(1), 113–124.
Soundalgekar, V. M.: 1973, Free convection effects on the oscillatory flow past an infinite, vertical, porous plate with constant suction, Proc. Roy. Soc. London A333, 25–36.
Soundalgekar, V. M. and Takhar, H. S.: 1977, MHD forced and free convective flow past a semiinfinite plate, AIAA J. 15, 457–458.
Takhar, H. S. and Ram, P. C.: 1991, Free convection in hydromagnetic flows of a viscous heatgenerating fluid with wall temperature and Hall currents, Astrophys. Space Sci. 183, 193–198.
Yamamoto, K. and Iwamura, N.: 1976, Flow with convective acceleration through a porous medium, J. Eng. Math. 10, 41–54.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kim, Y.J. Heat and Mass Transfer in MHD Micropolar Flow Over a Vertical Moving Porous Plate in a Porous Medium. Transport in Porous Media 56, 17–37 (2004). https://doi.org/10.1023/B:TIPM.0000018420.72016.9d
Issue Date:
DOI: https://doi.org/10.1023/B:TIPM.0000018420.72016.9d