Second Law Analysis for Free Convection in an L-Shaped Cavity Filled with Nanofluid

The paper aims to analyze the effects of various Prandtl number and different nanoparticles for heat transfer entropy generation free convection laminar fluid flow in an L-shaped cavity filled by nanofluid. To investigate second law characteristics convective from L- shaped geometry water nanofluids (Cu-water, Ag-water, Al2O3-water), on average Nusselt number, total Bejan has been numerically analyzed. Isotherms, stream function caused are also presented numbers nanoparticles. governing equations solved using penalty finite element method with Galerkins weighted residual technique. results reveal that Ag-water nanofluid highest gives amount irreversibility as well rate transfer. Cu-water produces more irreversibilities than Al2O3-water base fluid. Also show increase number. Therefore, may be important parameter desired increment decreasing given geometry.