4.4 Article

Role of multiple discrete heaters on the entropy generation during natural convection in porous square and triangular enclosures

Journal

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
Volume 74, Issue 10, Pages 1636-1665

Publisher

TAYLOR & FRANCIS INC
DOI: 10.1080/10407782.2018.1529483

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Comparative study based on the entropy generation analysis has been carried out within porous square and triangular (design 1 and 2) enclosures subjected to discrete heating involving double heaters (cases 1-3) and single heater (case 0) along each side wall during natural convection for involving Pr-m = 0.015 and 7.2 at . Galerkin finite element method is implemented for the accurate evaluation of the entropy generation terms involving thermal and velocity gradients based on elemental basis set. Cases 1-3 are found to correspond lower values of the entropy generation compared to case 0 especially at higher values of Da(m).

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