Thermal Radiation Effects on Heat and Mass Transfer over an Unsteady Stretching Surface

Abstract

The unsteady heat, mass, and fluid transfer over a horizontal stretching sheet has been numerically investigated. Using a similarity transformation the governing time-dependent boundary layer equations for the momentum, heat, and mass transfer were reduced to a sets of ordinary differential equations. These set of ordinary differential equations were then solved using the Chebyshev pseudo-spectral collocation method, and a parametric analysis was carried out. The study observed, among other observations that the local Sherwood number increases as the values of the stretching parameter and the Schmidt number increase. Also the fluid temperature was found to be significantly reduced by increases in the values of the Prandtl number , the unsteadiness parameter , and the radiation parameter . The velocity and concentration profiles were found to be reduced by increasing values of the unsteadiness parameter .

Chemical Entropy Generation and MHD Effects on the Unsteady Heat and Fluid Flow through a Porous Medium

“…In order to verify the accuracy of our present method, we have compared our results with those of Shateyi and Motsa [6] and Abd El-Aziz [12]. Table 1 shows the values of − (0) for several of and .…”

“…Elbashbeshy and Bazid [5] presented similarity solutions of the boundary layer equations, which describe the unsteady flow and heat transfer over an unsteady stretching sheet. Shateyi and Motsa [6] investigated thermal radiation effects on heat and mass transfer over an unsteady stretching surface. Bouabid et al [7] studied analysis of the magnetic field effect on entropy generation at thermosolutal convection in a square cavity.…”

“…This study is a complementary study to the work of [6] to include the thermal radiation effects on heat and mass transfer over an unsteady stretching surface. This also 2 Journal of Applied Mathematics presents chemical entropy generation and magnetohydrodynamic effects on the unsteady heat and fluid flow through a porous medium which are numerically investigated.…”

Unsteady MHD flow over a linearly stretching surface in CuO and 〖Al〗_2 O_3 nanofluids in presence of thermal radiation

“…The study of unsteady magneto hydrodynamic boundary layer flow over a stretching surface with viscous dissipation and Joule heating have been explored by Jat and Chaudhary [23]. Shateyi and Motsa [24] extended the effort of El-Aziz [25] to include mass transfer.…”

The Effects of Thermal Radiation and Non-Uniform Heat Source/Sink on MHD Boundary-Layer Flow and Heat Transfer Past a Stretching Sheet Embedded in Non-Darcian Porous Medium

“…Radiative effect often observed in many engineering areas such as in electrical power generation, astrophysical flows, solar power technology, space vehicle re-entry, nuclear engineering applications and other industrial areas. Accordingly, researchers (Siddheshwar and Mahabaleswar (2005), Mahmoud (2009), Shateyi and Motsa (2010), Abel and Mahesha (2008), Prasad et al (2010)) have examined the effects of thermal radiation on heat transfer over stretching sheet by considering different properties of a fluid. Moreover, when radiative heat transfer takes place, the fluid involved can be electrically conducting since it is ionized due to the high operating temperature.…”