This article emphasizes the significance of entropy generation analysis and nonlinear temperature density relation on thermally stratified viscous fluid flow over a vertical plate embedded in a porous medium with a thermal dispersion effect. In addition, the convective surface boundary condition is taken into an account. By using the suitable transformations, the governing flow equations in dimensional form are converted into set of nondimensional partial differential equations. Then the local similarity and nonsimilarity procedures are applied to transform the set of nondimensional partial differential equations into set of ordinary differential equations and then the resulting system of equations are solved by Chebyshev spectral collocation method along with the successive linearization. The effect of pertinent parameters, namely, Biot number, mixed convection parameter, and thermal dispersion on velocity, temperature, entropy generation rate, and heat transfer rate are displayed graphically and the salient features are explored in detail.
Entropy Generation Analysis in Nonlinear Convection Flow of Thermally Stratified Fluid in Saturated Porous Medium With Convective Boundary Condition
Motilal Nehru National Institute of
Allahabad 211004, India
National Institute of Technology Warangal,
Warangal 506004, India
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 6, 2016; final manuscript received March 2, 2017; published online May 2, 2017. Assoc. Editor: Peter Vadasz.
Vasu, B., RamReddy, C., Murthy, P. V. S. N., and Gorla, R. S. R. (May 2, 2017). "Entropy Generation Analysis in Nonlinear Convection Flow of Thermally Stratified Fluid in Saturated Porous Medium With Convective Boundary Condition." ASME. J. Heat Transfer. September 2017; 139(9): 091701. https://doi.org/10.1115/1.4036332
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