Abstract
Literature about entropy generation analysis of a wavy enclosure is scare. In this paper. a FORTRAN cod using an explicit finite-volume method was provided for estimating the entropy production due to the natural convection heat transfer in a cosine wavy absorber solar collector. The volumetric entropy generation terms both the heat transfer term and the friction term were straightly calculated. The solution was conducted assuming the isothermal boundary conditions of the absorber and the cover of solar collector. the results were obtained for Rayleigh number from 100 to 100000. The simulation results were compared with a flat plate absorber. It was found that, with increasing of the cosine wave amplitude, the collector enclosure irreversibility decreases.
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