微尺度热沉结构对非均匀高热流密度芯片的降温效能分析
|
摘要
利用有限元分析方法,对直槽道和圆形局部加密微针肋结构在相同入口压力下,均匀与非均匀热源的传热性能进行了比较。模拟结果表明:对于低雷诺数流动,在所取压力工况下,直槽道传热效率均弱于微柱群柱状热沉;对于均布热源,顺排微柱热沉的传热性能较好;对于集中热源,热源附近进行局部加密的顺排微柱群传热性能较好。
The finite element analysis is used to compare the heat transfer capacity of different heat sink design schemes under different pressure conditions. The simulation results show that for the design chosen in this paper, the heat transfer capacity of the Horizontal misaligned cylindrical formation structure is higher than the Aligned cylindrical formation structure. In the vicinity of the concentrated heat source, the heat transfer efficiency of theband-like encryption structure is higher than that of the local encryption structure. Under the conditions of general working pressure, for a uniform heat source, heat transfer efficiency of the straight groove design is higher than that of the cylindrical array design. While for the concentrated heat source, the heat transfer efficiency of the straight groove design is lower than that of the locally encrypted columnar heat sink design. However, as the inlet pressure increases, the increase in the heat transfer capacity of the straight groove design is greater than that of the columnar structure.
The finite element analysis is used to compare the heat transfer capacity of different heat sink design schemes under different pressure conditions. The simulation results show that for the design chosen in this paper, the heat transfer capacity of the Horizontal misaligned cylindrical formation structure is higher than the Aligned cylindrical formation structure. In the vicinity of the concentrated heat source, the heat transfer efficiency of theband-like encryption structure is higher than that of the local encryption structure. Under the conditions of general working pressure, for a uniform heat source, heat transfer efficiency of the straight groove design is higher than that of the cylindrical array design. While for the concentrated heat source, the heat transfer efficiency of the straight groove design is lower than that of the locally encrypted columnar heat sink design. However, as the inlet pressure increases, the increase in the heat transfer capacity of the straight groove design is greater than that of the columnar structure.
引文
[1]孔祥举,李力,钱吉裕,等.高热流密度功放芯片冷却用两相流技术研究[J].电子机械工程,2016,32(4):16-19,61.(KONG Xiangju,LI Li,QIAN Jiyu,et al.Research on two-phase flow technology for cooling of high heat flux amplifier chip[J].Electro-mechanical engineering,2016,32(4):16-19,61(in Chinese)).
[2]WANG P,BAR-COHEN A.On-chip hot spot cooling using silicon thermoelectric microcoolers[J].Journal of applied physics,2007,102(3):023702-1002.
[3]LORENZINI D,GREEN C,SARVEY T E,et al.Embedded single phase microfluidic thermal management for non-uniform heating and hotspots using microgaps with variable pin fin clustering[J].International journal of heat&mass transfer,2016,103:1359-1370.
[4]夏国栋,罗光亮,李晏君,等.流体横掠圆形微针肋热沉流动与传热特性[J].工程热物理学报,2009,30(4):621-624.(XIA Guodong,LUO Guangliang,LI Yanjun,et al.Flow and heat transfer characteristics of circle micro pin fin heat in fluid crossing[J].Journal of engineering thermophysics,2009,30(4):621-624(in Chinese)).
[5]周明正,夏国栋,柴磊,等.微针肋热沉中流体流动及传热的数值模拟[J].北京工业大学学报,2011,37(7):1052-1057.(ZHOUMingzheng,XIA Guodong,CHAI Lei,et al.Numerical simulation of fluid flow and heat transfer in the micro pin fin pin fin[J].Journal of Beijing university of technology,2011,37(7):1052-1057(in Chinese)).
[6]崔珍珍.微针肋热沉结构优化及Micro-PIV系统下单相与两相可视化研究[D].北京:北京工业大学,2013.(CUI Zhenzhen.Optimization of micro pin fin heat sink structure and Micro-PIV system for single-phase and two-phase visualization[D].Beijing:Journal of Beijing University of Technology,2013(in Chinese)).
[7]张承武,管宁,刘志刚,等.微柱群换热特性实验研究[C].北京:中国工程热物理学会传热传质学2009年学术会议论文集,2009:1-6.(ZHANG Chengwu,GUAN Ning,LIU Zhigang,et al.Experimental investigation of heat transfer characteristics in micro pin fins[C].Beijing:2009 Academic Meeting of Combustion of Chinese Society of Engineering Thermophysics,2009:1-6(in Chinese)).
[8]张承武,刘志刚,梁世强,等.微柱群阻力特性实验研究[J].工程热物理学报,2009,30(11):1898-1900.(ZHANG Chengwu,LIUZhigang,LIANG Shiqiang,et al.Experimental investigation of resistance characteristics in micro pin fins[J].Journal of engineering thermophysics,2009,30(11):1898-1900(in Chinese)).
[9]管宁,刘志刚,张承武.顺排微柱群内部层流流动特性[J].化工学报,2011,62(3):664-671.(GUAN Ning,LIU Zhigang,ZHANGChengwu.Laminar flow characteristics in in-line arranged micro-cylinder groups[J].CIESC journal,2011,62(3):664-671(in Chinese)).
[10]李玲,李玉梁.应用基于RNG方法的湍流模型数值模拟钝体绕流的湍流流动[J].水科学进展,2000,11(4):357-361.(LI Ling,LIYuliang.Numerical simulation of turbulent flow around bluff bodies using the RNG k-εturbulent model[J].Advances in water science,2000,11(4):357-361(in Chinese)).
[11]过增元.对流换热的物理机制及其控制:速度场与热流场的协同[J].科学通报,2000,45(19):2118-2122.(GUO Zengyuan.The physical mechanism of convective heat transfer and control:synergy of velocity field and heat flow field[J].Chinese science bulletin,2000,45(19):2118-2122(in Chinese)).
[12]卢小平,俞树荣.对流换热场协同的散度效应[J].化工学报,2011,62(9):2464-2468.(LU Xiaoping,YU Shurong.Divergence effect of field synergy for convective heat transfer[J].CIESC journal,2011,62(9):2464-2468(in Chinese)).
[2]WANG P,BAR-COHEN A.On-chip hot spot cooling using silicon thermoelectric microcoolers[J].Journal of applied physics,2007,102(3):023702-1002.
[3]LORENZINI D,GREEN C,SARVEY T E,et al.Embedded single phase microfluidic thermal management for non-uniform heating and hotspots using microgaps with variable pin fin clustering[J].International journal of heat&mass transfer,2016,103:1359-1370.
[4]夏国栋,罗光亮,李晏君,等.流体横掠圆形微针肋热沉流动与传热特性[J].工程热物理学报,2009,30(4):621-624.(XIA Guodong,LUO Guangliang,LI Yanjun,et al.Flow and heat transfer characteristics of circle micro pin fin heat in fluid crossing[J].Journal of engineering thermophysics,2009,30(4):621-624(in Chinese)).
[5]周明正,夏国栋,柴磊,等.微针肋热沉中流体流动及传热的数值模拟[J].北京工业大学学报,2011,37(7):1052-1057.(ZHOUMingzheng,XIA Guodong,CHAI Lei,et al.Numerical simulation of fluid flow and heat transfer in the micro pin fin pin fin[J].Journal of Beijing university of technology,2011,37(7):1052-1057(in Chinese)).
[6]崔珍珍.微针肋热沉结构优化及Micro-PIV系统下单相与两相可视化研究[D].北京:北京工业大学,2013.(CUI Zhenzhen.Optimization of micro pin fin heat sink structure and Micro-PIV system for single-phase and two-phase visualization[D].Beijing:Journal of Beijing University of Technology,2013(in Chinese)).
[7]张承武,管宁,刘志刚,等.微柱群换热特性实验研究[C].北京:中国工程热物理学会传热传质学2009年学术会议论文集,2009:1-6.(ZHANG Chengwu,GUAN Ning,LIU Zhigang,et al.Experimental investigation of heat transfer characteristics in micro pin fins[C].Beijing:2009 Academic Meeting of Combustion of Chinese Society of Engineering Thermophysics,2009:1-6(in Chinese)).
[8]张承武,刘志刚,梁世强,等.微柱群阻力特性实验研究[J].工程热物理学报,2009,30(11):1898-1900.(ZHANG Chengwu,LIUZhigang,LIANG Shiqiang,et al.Experimental investigation of resistance characteristics in micro pin fins[J].Journal of engineering thermophysics,2009,30(11):1898-1900(in Chinese)).
[9]管宁,刘志刚,张承武.顺排微柱群内部层流流动特性[J].化工学报,2011,62(3):664-671.(GUAN Ning,LIU Zhigang,ZHANGChengwu.Laminar flow characteristics in in-line arranged micro-cylinder groups[J].CIESC journal,2011,62(3):664-671(in Chinese)).
[10]李玲,李玉梁.应用基于RNG方法的湍流模型数值模拟钝体绕流的湍流流动[J].水科学进展,2000,11(4):357-361.(LI Ling,LIYuliang.Numerical simulation of turbulent flow around bluff bodies using the RNG k-εturbulent model[J].Advances in water science,2000,11(4):357-361(in Chinese)).
[11]过增元.对流换热的物理机制及其控制:速度场与热流场的协同[J].科学通报,2000,45(19):2118-2122.(GUO Zengyuan.The physical mechanism of convective heat transfer and control:synergy of velocity field and heat flow field[J].Chinese science bulletin,2000,45(19):2118-2122(in Chinese)).
[12]卢小平,俞树荣.对流换热场协同的散度效应[J].化工学报,2011,62(9):2464-2468.(LU Xiaoping,YU Shurong.Divergence effect of field synergy for convective heat transfer[J].CIESC journal,2011,62(9):2464-2468(in Chinese)).