AUTHOR=Asad Sadia 

TITLE=Nonlinear stretched flow of a radiative MHD Prandtl fluid with entropy generation and mixed convection

JOURNAL=Frontiers in Physics

VOLUME=11

YEAR=2023

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2023.1150457

DOI=10.3389/fphy.2023.1150457

ISSN=2296-424X

ABSTRACT=<p>This paper examines the analysis of entropy generation in the flow of an MHD Prandtl fluid over a nonlinear stretching sheet. Heat transfer is developed through a convectively heated sheet. The impacts of nonlinear radiation and nonlinear mixed convection are considered. The resulting nonlinear systems are computed for the unique solutions of velocity and temperature profiles. Effects of thermal radiation, the Prandtl number, Prandtl fluid parameters, and the Biot number are discussed. Results for the Nusselt number and skin friction coefficient are analyzed. The impact of the radiation parameter is to improve the rate of heat transport to the flow region. It is stated that temperature distribution increases for greater values of <italic>θ</italic><sub><italic>f</italic></sub>. We state that the fluid temperature decreases with the increasing importance of the Prandtl number Pr. Growth in the Prandtl number decreases the rate of thermal diffusion. It shows that the magnitude of drag forces decreases for larger values of Prandtl fluid parameters. Furthermore, curvature and mixed convection parameters boost the flow and heat transfer rate near the cylinder wall. The entropy generation grew up rapidly with larger values of magnetic and Brinkman numbers. The temperature ratio parameter and Prandtl fluid parameters reduce the entropy generation rate. These parameters are also used to control the entropy generation process.</p>