Mixed convective entropy optimized flow of rheological nanoliquid subject to Cattaneo-Christov fluxes: An application to solar energy

Abstract

An investigation of Cattaneo-Christov double diffusive analysis for magnetized convection flow of Reiner-Rivlin nanomaterial over stretched sheet is carried out. The Cattaneo-Christov double diffusive models are employed to discuss more accurate concentration and temperature distributions with solutal and thermal relaxation times. Thermal expression is modeled for dissipation, Brownian and thermophoresis diffusions. Entropy generation is examined. Non-linear differential expressions are transformed to non-dimensional ordinary system. Optimal homotopy analysis method (OHAM) leads to convergent solutions development. Graphical descriptions of entropy rate, concentration, thermal field and liquid flow have been explored. It is found that velocity boosts versus higher Reiner-Rivlin material variable. An opposite characteristics for entropy and fluid flow are detected through magnetic variable. Temperature boosts versus higher thermal relaxation time variable. An enhancement in temperature is witnessed for higher random and thermophoresis variables. Entropy rate and temperature against Brinkman number are enhanced. Here concentration decays for higher solutal relaxation time variable. Larger random variable results in concentration decay. Higher diffusion results in entropy generation enhancement. Concentration versus Schmidt number is decreased.