FREE CONVECTION FLOW PAST A VERTICAL CONE WITH A CHEMICAL REACTION IN THE PRESENCE OF TRANSVERSE MAGNETIC FIELD

Natural convective heat and mass transfer over an isothermal vertical cone due to the simultaneous action of buoyancy, chemical reaction, and transverse magnetic field is studied. The governing boundary-layer equations are transformed into a dimensionless form, and then the resulting unsteady nonlinear coupled partial differential equations are solved by using an efficient, more accurate, and unconditionally stable implicit finite difference scheme of the Crank–Nicolson type. A parametric study is performed to illustrate the effect of the buoyancy ratio parameter, Prandtl number, Schmidt number, chemical reaction parameter, and the magnetic field parameter on the velocity, temperature, and concentration profiles. The local and average characteristics: shear stresses, heat transfer coefficients, and mass transfer coefficients, are obtained numerically. The numerical results reveal that the velocity decreases in the case of a destructive reaction, whereas it increases for a generative reaction. 
Автор:  Palani G., Ragavan A. R.
Ключевые слова:  cone, chemical reaction, magnetohydrodynamics, implicit finite difference, Nusselt number
Стр:  1215