Effect of gravity fluctuation on free convection flow

ABSTRACT: Free convection and mass transfer flow of a viscous incompressible fluid past a uniformly moving infinite vertical porous plate in a porous medium has been generalized to include the effect of gravity fluctuation. The permeability and suction velocity have also been assumed to fluctuate with time. The effect of gravity variation on the velocity, temperature, and species concentration is discussed. Small increase in gravity fluctuation parameter shows significant changes in amplitude and phase of skin-friction. This parameter further shows an increase in the value of Nusselts number and decrease in phase of heat transfer