Entropy Generation on MHD Flow of a Casson Fluid over a Curved Stretching Surface with Exponential Space‐Dependent Heat Source and Nonlinear Thermal Radiation
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Date
2022
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Heat Transfer
Abstract
The present model concentrates on entropy generation on a steady incompressible flow of a
Casson liquid past a permeable stretching curve surface through chemical reaction and magnetic field
effects. The exponential space‐dependent heat source cum heat and mass convective boundary
conditions are accounted for. The resulting nonlinear boundary layer model is simplified by the
transformation of similarity. Chebyshev spectral technique is involved for obtaining numerical results of
the converted system of the mathematical models. Behavior of the determining thermo‐physical
parameters on the profiles of velocity, temperature, concentration, skin friction, heat, mass transfer
rate, rate of entropy generation, and finally the Bejan number are presented. The major point of the
present investigation show that the curvature term weakens the mass transfer profile as the fluid
temperature reduces all over the diffusion regime. A decrease in heat generation strengthens the
species molecular bond, which prevents free Casson particle diffusion. Furthermore, the mass transfer
field diminishes in suction and injection flow medium
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Keywords
Casson fluid, Chebychev spectral method, Convective boundary condition, Irreversibility analysis, Nonlinear thermal radiation