Abstract
Combined effects of inclination with respect to gravity, Cu nanoparticles, and stainless steel partial fins on constrained ice melting with natural convection inside a horizontal enclosure with cross section of major circle sector are examined. Two-dimensional temperature-based lattice Boltzmann method (TLBM) in single-phase framework is applied to treat the solid-liquid phase change process in the presence of nanofluids. Pertinent variables such as transient liquid fraction, average Nusselt number on hot surfaces, average temperature of PCM, and maximum velocity in molten PCM are investigated. It is found that influences of nanofluids and partial internal fins on thermal performance of the horizontal enclosure and interface morphology are related to inclination angle despite the negative effects of increment of viscosity, weakening of natural convection flow, and decrease of storage capacity.
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