The flow with unstable electroconductivity of an MHD fluid over a suddenly accelerated plate : A study

Mr. Y. Harnath, Dr. A. Sudhakaraiah, Dr. P. Venkatalakshmi, Prof. M. Rajaiah

The effects of viscosity and thermophoresis on a suddenly accelerated plate with approximated variable electronegativity on an MHD fluid influenced by chemical reaction and radiation are made in this paper and the governing hydrodynamical equations of the physical problem was formulated ; its solutions were analyzed for diverse parameters, such as, Hartmann number (M), electroconductivity (σ), temperature dependent parameter (Pr), Reynold’s number (Re), thermal buoyancy (Gr), thermophoresis (Sr) etc. The results were shown through graphs and tables. It is seen that the velocity increases with the magnetic field (M) ; the thermal buoyancy and Solutal buoyancy also increases the velocity ; as a result of sudden movement of the plate, the decrease in electronegativity results in the increase of velocity ; the thermal distribution increases with the increase of Pr, Re, and viscosity ; with the increase of radiation and large amounts of heat absorption, the temperature increases ; with the increase of Sr and Sc, and with the rise in the chemical reaction the concentration distribution of the fluid decreases ; with increase of viscosity a sharp decrease is observed ; with increase of radiation the concentration of the fluid is increased but it decreases in the boundary layer sharply.