HALL EFFECTS ON MHD FREE CONVECTIVE FLOW PAST AN INFINITE  VERTICAL POROUS PLATE WHEN PLATE TEMPETATURE OSCILLATES  IN TIME ABOUT A CONSTANT MEAN

Md. Rafiqul  Islam; Fouzia  Rahman

doi:10.53808/KUS.2000.2.1.31-44-se

Authors

Md. Rafiqul Islam Math ematics Discipline, Khulna University, Khulna 9208, Bangladesh
Fouzia Rahman Department of Mathematics, Bangladesh Institute of Technology, Khulna 9203, Bangladesh

DOI:

https://doi.org/10.53808/KUS.2000.2.1.31-44-se

Keywords:

Hall parameter; Grashof number; Magnetic parameter; Eckert number; Frequency parameter

Abstract

An unsteady MHD free connect ive flow with Hall current of an electrically conducting incompressible viscous fluid past an impulsively started infinite, vertical porous plate in the presence of a strong transverse magnetic field is studied. The plate temperature is considered to oscil late in time about a constant mean. Hall currents give rise to a cross flow making the flow three-dimensional. Approximate solutions to the coupled non-linear equations occurring in the problem have been obtained. The effects of the various parameters on the mean flow and transient flow have been discussed with the help of tables and graphs.

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References

Cowling, T.G., 1957. Magneto-hydrodynamics. Interscience Publ. Inc., New York, p. 101.

Soundalgekar, V.M. and Vavre, P.D., 1977. Unsteady free convection and mass transfer flow pass an infinite vertical forus plate when plate temperature oscillate in time about a constant mean. Journal of Heat and Mass Transfer, 20: 1363.

Soundalgekar, V.M., 1972. Unsteady free convection flow pass an infinite vertical forus plate when plate temperature oscillate in time about a constant mean. Journal of Heat and Mass Transfer , Vol. 15: 1253.