When pin fins were inclined forward at 45掳 to the heated plate the local heat transfer rates were found to be increased by about 1.8 times, compared with the ones without a pin fin in a laminar region. It was found by a flow visualization experiment that a pair of longitudinal vortices ...
采用大量固定工况,以及实际车用工况实验结果,对比验证优化后的Pin-Fin能降低车用功率模块7.62%的结-流热阻,减小65%的功率模块损伤,提升车用电机控制器寿命1.8倍,为车用功率模块低热阻集成Pin-Fin散热器提供新的研究思路。
Heat transfer and pressure loss performances are experimentally studied for the flow through the pin-fin arrays, which consist of closely arranged very thin pins, in order to investigate the effect of turbulence on the heat transfer mechanisms. The flow visualization tests were carried out for ...
Flow phenomenon at the pin fin rear side and a leakage vortex near the pin fin tip were observed. High Nusselt numbers appeared on leading side. The leakage vortex imposed high energy losses in the mainflow. The flow and heat transfer characteristics were associated with Ro number and ...
Pin fin heat sink seems to be promising for aircraft cooling system. The latest work of the same group [2] deal with the heat transfer enhancement by applying the perforated pin fin heat sink for cooling system in future aircraft. It is concluded that perforation can not only improve the he...
However, increasing pin fin number further degrades heat transfer performance. Results show that the highest heat transfer is achieved by 121 × 40 pin fin and plate heat sink for all three orientation angles. The lowest heat transfer performance is realized by non-pinned plate. When plate ...
惩罚因子的大小会影响模型收敛性和准确度,不同惩罚因子下密度和比热容插值函数如图3所示。因此,可以通过优化各离散区域的设计变量g,改变Pin-Fin的材料属性和拓扑结果,优化Pin-Fin散热器的热-流性能。 表1 Pin-Fin散热器的材料属性 Tab.1 Material properties of Pin-Fin heatsink...
Pin fin arrays are most commonly used to promote convective cooling within the internal passages of gas turbine airfoils. Contributing to the heat transfer are the surfaces of the channel walls as well as the pin itself. Generally the pin fin cross section is circular; however, certain applicatio...
PIN FIN TYPE HEAT EXCHANGER
Heat Transfer Characteristics of Square Micro Pin Fins under Natural Convection Natural Air-CoolingHeat SinkMicro Pin FinHeat Transfer PerformanceExperimentNumerical AnalysisIn order to comply with the recent demand for downsizing of the ... N Matsumoto,T Tomimura,Y Koito - 《Journal of Electronics ...