Irreversibility analysis in dissipative flow of Darcy-Forchheimer viscous fluid

Entropy minimization is an innovative approach in several thermal processes and having dynamical applications in thermal polymer processing. The importance of entropy is perceived in, combustion, porous media turbine systems, heat exchangers, thermal systems, cooling system, and nuclear reactions, etc. In view of such thermal applications, the prime is here to discuss the hydromagnetic entropy optimized flow of Darcy-Forchheimer viscous liquid by a curved stretchable surface is scrutinized. Heat expression is assisted with heat source/sink, dissipation, and Joule heating effects. Entropy rate and energy equations are developed through the implementation of the second and first laws of thermodynamic. The governing equations are established in a curvilinear coordinate. Nonlinear differential systems are altered into ordinary ones by employing the transformation variables. The obtained system is computed with one of the numerical methods (Newton built-in shooting technique). Entropy rate, velocity field, temperature, and Bejan number variation for several sundry variables are scrutinized. The computation result of surface drag force is studied for variation of curvature parameter and Hartman numbers. Thermal transportation rate for both prescribed heat flux (PHF) and prescribed surface temperature (PST) cases are scrutinized.

Automated summary

Entropy minimization is an innovative approach with wide applications in thermal processes and thermal polymer processing. This paper discusses the mathematical model and computational method of hydromagnetic entropy-optimized flow on a curved stretchable surface, and investigates the effects of various variables on the flow characteristics and thermal transport rate.