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In this paper we discuss the effect of chemical reaction and thermal radiation on unsteady free convective heat and mass transfer flow through a porous medium in a vertical wavy channel. The unsteadiness in the flow is due to the oscillatory flux in the flow region. The coupled equations governing the flow, heat and mass transfer have been solved by using a perturbation technique with the slope  of the wavy wall as the perturbation parameter. The expression for the velocity, the temperature, the concentration, the rate of heat and mass transfer are derived and are analyzed for different variations of the governing parameters G, R, M, D, , N, N1, ,  , k, x and t.

frontiers in heat and mass transfer

EFFECT OF CHEMICAL REACTION AND RADIATION ON UNSTEADY CONVECTIVE HEAT AND MASS TRANSFER FLOW OF A VISCOUS FLUID IN A VERTICAL WAVY CHANNEL WITH OSCILLATORY FLUX AND HEAT SOURCES