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URN etd-0812113-110404 Statistics This thesis had been viewed 1849 times. Download 710 times. Author Chao-Yu Chen Author's Email Address No Public. Department Mechanical Engineering Year 2012 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 81 Title Simulated Annealing Method to the Optimum Thermal Analysis of a Heat Sink with Fixed Total Volume of Fins Keyword fin optimum heat sink effectiveness annealing annealing effectiveness heat sink optimum fin Abstract In this study, a heat sink with fixed total fin volume is simulated to pursue the maximum thermal dissipation. The fin can be divided into plate fin and pin fin on a heat sink. The shapes of cross-sectional area for the pin fin are square, circular, equilaterally triangular and rectangular. By setting thermal conductivities of heat sink and fins at first, the thermal dissipation equation of the heat sink can be theoretically derived by inputting parameters including the area of the base, heat transfer coefficient, Biot number, shape parameter, and total volume of fins. Then, the maximum effectiveness can be solved by simulated annealing method from this equation. Furthermore, the optimized dimension of the heat sink can be obtained that contains the fin number, fin length, fin cross section and the lower thermal resistance.
During the computation process, convective effect of the fin tip is neglected. Then the comparison of effectiveness and thermal resistance between plate fin heat sink and pin fins heat sink with four different fin cross-sections is explored with different heat transfer coefficient (natural and forced convection) and various total volumes of fins for the same fin number. Meanwhile, the table of the optimum range of heat sink is supplied as a reference for the design of a heat sink.
Advisor Committee Hong-Sen Kou - advisor
Ji-Jen Lee - advisor
Cheng-Fang Chen - co-chair
Sheam-Chyun Lin - co-chair
Files Date of Defense 2013-07-08 Date of Submission 2013-08-12