Abstract
An analysis is carried out to investigate the effects of MHD free convection heat transfer of power-law non-Newtonian fluids along a stretching sheet. This has been done under the simultaneous action of suction, heat generation/absorption, thermal radiation and uniform transverse magnetic field. The stretching sheet is assumed to continuously moving with a power-law velocity and maintaining a uniform surface heat flux. The governing nonlinear partial differential equations are transformed into a system of nonlinear ordinary differential equations using appropriate similarity transformations. The resulting non-linear equations are solved numerically using Nachtsheim-Swigert shooting iterative technique along with sixth order Runge-Kutta integration scheme. Numerical results for the non-dimensional velocity and temperature profiles are shown graphically and discussed. The effects of skin-friction coefficient and the local Nusselt number which are of physical and engineering interest are studied and presented graphically as well as in the form of tables for the variation of different physically important parameters. A comparison of the present study is also performed with the previously published study and found excellent agreement.
Highlights
The study of MHD flow of an electrically conducting fluid on heated stretching sheet becomes an important matter due to its many engineering and physical applications in modern metallurgical and metal-working process
We have investigated the effect on MHD free convective heat transfer of powerlaw non-Newtonian fluids along a continuously moving stretching sheet in the presence of radiation and heat generation/absorption with uniform surface heat flux
In this study we have considered the effects of free convection, radiation and heat generation/absorption which were not considered in the work of Chen (2008)
Summary
The study of MHD flow of an electrically conducting fluid on heated stretching sheet becomes an important matter due to its many engineering and physical applications in modern metallurgical and metal-working process. Vajravelu and Hadjinicolaou (1997) studied the convective heat transfer in an electrically conducting fluid near an isothermal stretching sheet and they studied the effect of internal heat generation or absorption. The study of non-Newtonian fluid flow and heat transfer over a stretched surface gets attention due to its numerous applications industrially. Raptis and Perdikis (1999) studied radiation and free convection flow past a moving plate In this present study, we have investigated the effect on MHD free convective heat transfer of powerlaw non-Newtonian fluids along a continuously moving stretching sheet in the presence of radiation and heat generation/absorption with uniform surface heat flux. We compare this study to the previous study and found excellent agreement
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