Entropy Generation Analysis for Combustible Third Grade Fluid Flow through a Slant Channel

Kgomotshwana Frans Thosago; Lazarus Rundora; Samuel Olumide Adesanya

doi:10.20944/preprints202406.0854.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 11 June 2024 / Approved: 12 June 2024 / Online: 12 June 2024 (14:35:16 CEST)

This paper addresses the mixed convective flow and heat transfer in combustible third grade fluid through a slant channel that is filled with a permeable materials. The fluid layer in contact with the lower plate is exposed to convective heating with the ambient while at the upper plate, a constant heat flux is experienced. We employ the spectral quasilinearisation method (SQLM) to the coupled nonlinear flow governing equations. Fluid velocity and temperature profiles, local entropy generation and irreversibility ratio are computed and analysed quantitatively and qualitatively. A residual error analysis demonstrated high accuracy and convergence of the numerical method. The results on flow and thermal effects, entropy generation rate and Bejan number revealed fascinating manifestations that have profound implications in design of thermo-mechanical systems. In particular, the results of the thermal analysis are pertinent to optimal designs of systems that achieve efficient energy utilization.

reactive fluids; entropy generation; third-grade fluid; porous medium; variable viscosity; heat flux; Navier slip

Computer Science and Mathematics, Applied Mathematics

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Entropy Generation Analysis for Combustible Third Grade Fluid Flow through a Slant Channel

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