Abstract
The boundary layer heat and mass transfer flow of Casson nanofluid over a stretching sheet with constant wall temperature (CWT) under the magnetic field and thermal radiation effects is investigated numerically. Using similarity transformations, the governing equations are reduced to a set of nonlinear ordinary differential equations (ODEs). These equations are solved numerically by Shooting method. The effects of Casson parameter, magnetic parameter, porosity parameter, radiation parameter, Prandtl number, Brownian parameter and thermophoresis parameter on velocity, temperature and concentration fields are shown graphically and discussed. The results show that increase in Casson parameter causes the wall temperature increase well in the nanofluid.
Highlights
The convectional fluids such as water, ethylene glycol and engine oil used in many industrial processes are poor heat conductors because these fluids have low thermal conductivities
Ahmed and Pop [3] examined mixed convection flow of nanofluid which the model proposed by Tiwari and Das [4] with the condition that past over a vertical plate embedded in the porous medium
Mahdy [8] studied mixed convection flow together with heat transfer in nanofluids due to stretching sheet. He found that the rate of heat transfer at the vertical stretching surface and thermal boundary layer of nanofluids increased as compared to pure water
Summary
The convectional fluids such as water, ethylene glycol and engine oil used in many industrial processes are poor heat conductors because these fluids have low thermal conductivities. Noghrehabadi et al [7] studied partial slip effects on the boundary layer flow of nanofluid over a stretching sheet with constant wall temperature. Mahdy [8] studied mixed convection flow together with heat transfer in nanofluids due to stretching sheet He found that the rate of heat transfer at the vertical stretching surface and thermal boundary layer of nanofluids increased as compared to pure water. Hussanan et al [15] considered unsteady MHD flow and heat transfer in some nanofluids over an accelerated vertical plate in a porous medium. They indicated that the effect of radiation parameter caused the wall temperature increased but temperature decreases significantly when Prandtl number is increased. The resulting governing equations are reduced to ordinary differential equations through similarity transformation and solved numerically using the Shooting method
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