Study of Unsteady Two Phase Flow over An Inclined Permeable Stretching Sheet with Effects of Electrification and Radiation

Abstract

An analysis on flow and heat transfer with in a two-dimensional unsteady radiative boundary layer with fluid-particle interaction has been studied.  The flow is occurred due to the suddenly linear movement of an inclined permeable stretching sheet. The flow is considered in a neutral medium where no external electric or magnetic field is supplied. But due to the random motion of particles leads to interaction between fluid-particle, particle-particle and particle-wall, a tribo-electric effect occurs. As a result, both the fluid as well as particles are electrified which creates a major impact on flow field.   Hence, a balanced mathematical model has been formulated considering both electrification and radiation parameter on both the phases. Using similarity transformation, the governing equations are transferred to ODEs and solved by built in solver Bvp4c of MATLAB. The impacts of various parameters on the flow field have been discussed and determined the heat transfer characteristics. The stronger electric filed significantly enhances the temperature of both fluid and particle phase, which occurs more heat transfer on the surface.