Heat transportation in electro-magnetohydrodynamic flow of Darcy-Forchheimer viscous fluid with irreversibility analysis

Abstract

Electro-hydrodynamic Darcy-Forchheimer viscous flow over a stretching surface is scrutinized. Energy communication is presented with the help of the first law of thermodynamics in presence of thermal flux, dissipation and Joule heating. Irreversibility analysis is modeled through thermodynamic second law. First order chemical reaction is scrutinized. Thermodynamics second law gives mathematical method for the reduction of friction and entropy optimization. It is necessary to enhance the entropy rate to obstruct any heat losses that can interrupt the performance of system. Partial differential equation is altered to ordinary system through appropriate variables. The obtained nonlinear system is solved by ND-solve technique. Prominent behaviors of different influential variables on velocity, Bejan number, concentration, entropy generation and temperature are graphically analyzed. Computational outcomes for surface drag force, temperature gradient and mass transfer rate are addressed. Velocity has opposite behavior for higher estimation of electric and magnetic fields parameters. An augmentation in porosity parameter decreases the velocity. Temperature has similar features for magnetic and radiation parameters. Bejan number and entropy generation have similar impacts for electric field. For larger porosity parameter the entropy rate is augmented. Comparative study is highlighted in Table .