Journal of Applied Fluid MechanicsJAFMMechanical Engineeringhttp://jafmonline.net1admin173535721735364510.36884/jafmenjalali13931011gregorian20151181online1fulltexten10.36884/jafm.8.01.22600Natural Convection Heat and Mass Transfer Flow with Hall Current, Rotation, Radiation and Heat Absorption Past an Accelerated Moving Vertical Plate with Ramped TemperaturegeneralResearchAn investigation of unsteady hydromagnetic natural convection heat and mass trans fer flow with Hall current of a viscous, incompressible, electrically conducting, heat absorbing and optically thin radiating fluid past an accelerated moving vertical plate through fluid saturated porous medium in a rotating environment is carried out when temperature of the plate has a temporarily ramped profile. The exact solutions of momentum, energy and concentration equations are obtained in closed form by Laplace transform technique. The expressions of skin friction, Nusselt number and Sherwood number are also derived. For both ramped temperature and isothermal plates, Hall current tends to accelerate primary and secondary fluid velocities whereas heat absorption and radiation have reverse effect on it. Rotation tends to retard primary fluid velocity whereas it has a reverse effect on secondary fluid velocity. Heat absorption and radiation have tendency to enhance rate of
heat transfer at the plate.Hall current, Coriolis force, Ramped temperature, Heat absorption and Thermal radiation.720http://jafmonline.net/JournalArchive/download?file_ID=35457&issue_ID=220G. S.Sethgsseth_ism@yahoo.com`NoDepartment of Applied Mathematics, Indian School of Mines, Dhanbad 826004, India.`

`R.Sharmarohit.iitg08@gmail.com``NoDepartment of Applied Mathematics, Indian School of Mines, Dhanbad 826004, India.`

`S.Sarkarsarkar.ism@gmail.com``NoDepartment of Applied Mathematics, Indian School of Mines, Dhanbad 826004, India.`