ENTROPY ANALYSIS FOR MAGNETOHYRODYNAMIC FLUID FLOW IN POROUS MEDIUM DUE TO A NON ISOTHERMAL STRETCHING SHEET

The paper considers the second law analysis of MHD boundary-layer flow heat transfer due to a permeable non isothermal linearly stretching sheet placed at the bottom of fluid saturated porous medium. A uniform suction/blowing is applied. Similarity transformation is performed to convert the governing partial differential equations into ordinary differential equations. The momentum equation has closed form solution which is used in the energy equation. The energy equation is solved numerically by finite difference method. Solutions obtained for velocity and temperature fields are utilized to compute entropy generation. The effects of pertinent parameters on entropy generation are depicted graphically and discussed.