RT Journal Article ID 4e826d852a09458c A1 Huang, Yicang A1 Li, Hui A1 Shen, Shengnan A1 Xue, Yongbo A1 Xu, Mingliang A1 Zhai, Tianqi A1 Zhang, Guoqing T1 NUMERICAL ANALYSIS OF THE THERMAL PERFORMANCE OF A NOVEL DOUBLE-LAYERED HEAT SINK WITH STAGGERED PIN FINS JF Heat Transfer Research JO HTR YR 2019 FD 2019-03-18 VO 50 IS 8 SP 757 OP 772 K1 heat sink K1 double-layered K1 staggered pin fins K1 thermal performance AB A new design of a heat sink, called double-layered staggered pin-fin heat sink (DL-SPFHS), is proposed in this work, and its thermal performance is investigated numerically. The thermal performance of DL-SPFHS was compared with the commonly used double-layered microchannel heat sink (DL-MCHS) at the same volume flow rate and overall geometric dimensions. The maximum wall temperature on the bottom wall of DL-SPFHS is 13.2 K lower than that of DL-MCHS. Furthermore, the effects of two geometric parameters, namely, the pin-fin dimension ratio of the fin length to fin width and pin-fin spacing ratio of the gap length to fin width, on thermal resistance and pressure drop were analyzed. With the increase in the pin-fin dimension ratio, the thermal resistance of DL-SPFHS decreased first and then increased, and with the pin-fin dimension ratio of 3, DL-SPFHS achieved the lowest thermal resistance which is 5.3% lower than that of the DL-SPFHS with the ratio of 1. However, the thermal resistance of DL-SPFHS increased linearly with increase of the pin-fin spacing ratio. The total pressure drop decreased significantly with increase in either the pin-fin dimension ratio or pin-fin spacing ratio. PB Begell House LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,38007eb65e1e4a54,4e826d852a09458c.html