EFFECT OF THE HALL CURRENT AND CHEMICAL REACTION ON MHD FLOW ALONG AN ACCELERATED POROUS FLAT PLATE WITH INTERNAL HEAT ABSORPTION/GENERATION

The effect of the Hall current on unsteady free convection of an electrically conducting incompressible viscous fluid past an accelerated vertical porous plate with internal heat absorption/generation in the presence of various species (H₂, CO₂ , H₂O, and NH₃ ) undergoing to the first-order chemical reaction in a uniform transverse magnetic field is studied. The role of pertinent parameters characterizing the flow field is discussed. The governing equations are solved by using the Hh n (x) functions. It is revealed that heat generation coupled with injection results in a backflow rise. A linearly varying velocity of the plate causes a sudden rise or fall of the velocity in the vicinity of the plate, whereas an asymptotically varying velocity leads to a uniform fall. The presence of chemical reaction increases the secondary velocity by 40%.
Автор:  Kar M., Sahoo S. N., Dash G. C.
Ключевые слова:  Hall current, heat absorption/generation, chemical reaction, accelerated porous plate
Стр:  605