TY - EJOU
AU - Hamadneh, Nawaf N.
AU - Khan, Waqar A.
AU - Khan, Ilyas
TI - Second Law Analysis and Optimization of Elliptical Pin Fin Heat Sinks Using Firefly Algorithm
T2 - Computers, Materials \& Continua
PY - 2020
VL - 65
IS - 2
SN - 1546-2226
AB - One of the most significant considerations in the design of a heat sink is thermal
management due to increasing thermal flux and miniature in size. These heat sinks utilize
plate or pin fins depending upon the required heat dissipation rate. They are designed to
optimize overall performance. Elliptical pin fin heat sinks enhance heat transfer rates and
reduce the pumping power. In this study, the Firefly Algorithm is implemented to optimize
heat sinks with elliptical pin-fins. The pin-fins are arranged in an inline fashion. The natureinspired metaheuristic algorithm performs powerfully and efficiently in solving numerical
global optimization problems. Based on mass, energy, and entropy balance, three models
are developed for thermal resistance, hydraulic resistance, and entropy generation rate in
the heat sink. The major axis is used as the characteristic length, and the maximum velocity
is used as the reference velocity. The entropy generation rate comprises the combined effect
of thermal resistance and pressure drop. The total EGR is minimized by utilizing the firefly
algorithm. The optimization model utilizes analytical/empirical correlations for the heat
transfer coefficients and friction factors. It is shown that both thermal resistance and
pressure drop can be simultaneously optimized using this algorithm. It is demonstrated that
the performance of FFA is much better than PPA.
KW - Firefly algorithm
KW - mathematical models
KW - entropy generation rate
KW - elliptical pin-fin heat sinks
KW - thermal resistance
KW - pressure drop
DO - 10.32604/cmc.2020.011476