MHD AND RADIATIVE FLOW PAST AN VERTICAL OSCILLATING PLATE WITH CHEMICAL REACTION OF FIRST ORDER

Hydromagnetic and thermal radiation effects on unsteady free convective flow of a viscousincompressible flow past an infinite isothermal vertical oscillating plate with variable massdiffusion are presented here, taking into account the homogeneous chemical reaction of firstorder. The fluid considered here is a gray, absorbing-emitting radiation but a non-scatteringmedium. The plate temperature is raised to w T and the concentration level near the plate is raisedlinearly with time. An exact solution to the dimensionless governing equations has been obtainedby the Laplace transform method, when the plate is oscillating harmonically in its own plane. Theeffects of velocity, temperature and concentration are studied for different parameters likemagnetic field parameter, phase angle, Schmidt number, thermal radiation parameter, chemicalreaction parameter, thermal Grashof number, mass Grashof number and time. It is observed thatthe velocity increases with decreasing magnetic field parameter or radiation parameter. It is alsoobserved that the velocity increases with decreasing phase angle ωt or chemical reactionparameter.