Abstract
Magnetohydrodynamic and entropy generation of double-diffusive mixed convection in a curvilinear cavity filled with nano-enhanced phase change material and a rotating cylinder has been studied in this paper. Three heat sources have been considered and a range of different variables such as Reynolds number (10 ≤ Re ≤100), Richardson number (0.1≤ Ri ≤10), Hartmann number (0≤ Ha ≤50) Lewis number (0.1≤ Le ≤0.9), bouncy ratio (1≤ Nz ≤5), fusion temperature (0.1≤ ≤0.9) and Stephan number (0.1≤ Ste ≤0.9). These variables have been numerically solved by applying the Finite Element Method. The main results indicated that heat transfer, mass transfer and heat capacity are hugely increased with the increase of the Re, Ri and volume concentration while decreasing with the increase of the Ha number and entropy generation. Furthermore, the melting/solidification region is hugely influenced by the fusion temperature while this variable has a negligible influence on streams, heat transfer and mass transfer. Furthermore, the value of the average Nusselt number and average Sherwood number has increased by 328% and 258% respectively by increasing the Reynolds number from 10 to 100. Also, these two numbers have decreased by 61% and 54% respectively by increasing the Hartmann number from 0 to 20.
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