Second Law Analysis and Optimization of Elliptical Pin Fin Heat Sinks Using Firefly Algorithm  

作　　者：Nawaf N.Hamadneh Waqar A.Khan Ilyas Khan 

机构地区：[1]Department of Basic Sciences,College of Science and Theoretical Studies,Saudi Electronic University,Riyadh,11673,Saudi Arabia [2]Department of Mechanical Engineering,College of Engineering,Prince Mohammad Bin Fahd University,Al Khobar,31952,Saudi Arabia [3]Faculty of Mathematics and Statistics,Ton Duc Thang University,Ho Chi Minh City,72915,Vietnam

出　　处：《Computers, Materials & Continua》2020年第11期1015-1032,共18页计算机、材料和连续体（英文）

基　　金：This research is supported by the Deanship of Scientific Research/Saudi Electronic University[Research Number:7638-HS-2019-1-1-S].Initials of authors who received the grant:N.N.Hamadneh;W.A.Khan.

摘　　要：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 nature-inspired 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.

关 键 词：Firefly algorithm mathematical models entropy generation rate elliptical pin-fin heat sinks thermal resistance pressure drop 

分 类 号：TG1[金属学及工艺—金属学]