Mass transfer effects on the unsteady mhd radiative- convective flow of a micropolar fluid past a vertical porous plate with variable heat and mass fluxes

被引：7

作者：

Reddy M.G. ^{[1
]}

机构：

[1] Department of Mathematics, Acharya Nagarjuna University, Ongole Campus

来源：

Journal of Engineering Physics and Thermophysics | 2013年 / 86卷 / 02期

关键词：

mass transfer; MHD; micropolar fluid; mixed convection; radiation; unsteady flow;

D O I：

10.1007/s10891-013-0852-9

中图分类号：

学科分类号：

摘要：

The problem of unsteady two-dimensional laminar flow of a viscous incompressible micropolar fluid past a vertical porous plate in the presence of a transverse magnetic field and thermal radiation with variable heat and mass fluxes is considered. The free stream velocity is subjected to exponentially increasing or decreasing small perturbations. A uniform magnetic field acts perpendicularly to a porous surface where a micropolar fluid is absorbed with a suction velocity varying with time. The Rosseland approximation is used to describe radiative heat transfer in the limit of optically thick fluids. The effects of the flow parameters and thermophysical properties on the velocity and temperature fields across the boundary layer are investigated. The effects of various parameters on the velocity, microrotation velocity, temperature, and concentration profiles are given graphically, and the values of the skin friction and couple stress coefficients are presented. © 2013 Springer Science+Business Media New York.

引用

页码：431 / 441

页数：10

共 23 条

[1]

Eringen A.C., Theory of micropolar fluids, J. Math. Mech., 16, pp. 1-18, (1966)

[2]

Eringen A.C., Theory of thermomicrofluids, J. Math. Anal. Appl., 38, pp. 480-496, (1972)

[3]

Ahmadi G., Self-similar solution of incompressible micropolar boundary layer flow over a semi-infinite plate, Int. J. Eng. Sci., 14, pp. 639-646, (1976)

[4]

Peddieson J., McNitt R.P., Boundary layer theory for micropolar fluid, Recent Adv. Eng. Sci., 5, pp. 405-426, (1970)

[5]

Takhar H.S., Soundagekhar V.M., Flow and heat transfer of a micropolar fluid past a porous plate, Indian J. Pure Appl. Math., 16, 5, pp. 552-558, (1985)

[6]

Gorla R.S.R., Combined forced and free convection in micropolar boundary layer flow on a vertical flat plate, Int. J. Eng. Sci., 26, 4, pp. 385-391, (1988)

[7]

Raptis A., Flow of a micropolar fluid past a continuously moving plate by the presence of radiation, Int. J. Heat Mass Transfer, 41, pp. 2865-2866, (1998)

[8]

Sharma R.C., Gupta G., Thermal convection in micropolar fluids in porous medium, Int. J. Eng. Sci., 33, pp. 1887-1892, (1995)

[9]

Kim Y.J., Unsteady convection flow of micropolar fluids past a vertical porous plate embedded in a porous medium, Acta Mech., 148, pp. 105-116, (2001)

[10]

Kim Y.J., Unsteady MHD convection flow of polar fluids past a vertical moving porous plate embedded in a porous medium, Int. J. Heat Mass Transfer, 44, pp. 2791-2799, (2001)

← 1 2 3 →