Journal
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
Volume 71, Issue 10, Pages 979-1003Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10407782.2017.1326785
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The present work involves the entropy generation studies within the porous square and triangular (models 1 and 2) cavities subjected to various discrete heating strategies at side walls (cases 1-4: symmetric heater locations, case 5: asymmetric heater locations) during natural convection over the wide range of Darcy number, , for various fluids (Pr-m=0.015 and 7.2) at . Galerkin finite-element method has been used to solve the governing equations. The symmetric and asymmetric distributions of heaters have similar effects at lower Da(m). However, the symmetric distribution of heaters corresponds to lower entropy generation rates at higher Da(m). The triangular (model 1 and model 2) cavities are found to be optimal over the entire range of Da(m) based on the higher heat transfer rate and optimal entropy generation rates.
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