Unsteady heat and mass transfer from a rotating vertical cone with a magnetic field and heat generation or absorption effects

摘要: Abstract This work is focused on the study of unsteady heat and mass transfer by mixed convection flow over a vertical permeable cone rotating in an ambient fluid with time-dependent angular velocity presence magnetic field generation or absorption effects. The surface maintained at variable temperature concentration. Fluid suction injection assumed to occur surface. coupled nonlinear partial differential equations governing thermosolutal convective have been solved numerically using implicit, iterative finite-difference scheme. Comparisons previously published conducted results are found be excellent agreement. A parametric showing effects buoyancy parameter, coefficient local tangential azimuthal skin friction coefficients, Nusselt Sherwood numbers conducted. These illustrated graphically depict special features solutions. It that skin-friction coefficients increase time when increases, but reverse trend observed for decreasing velocity. However, these not mirror reflection each other. Increasing ratio predicted numbers. Also, increases number decrease number. On other hand, (decrease) (injection) parameter.