应用数学和力学2025，Vol.46Issue(10)：1233-1244,12.DOI:10.21656/1000-0887.460047
受限式阵列射流冲击传热的试验和数值研究
Experimental and Numerical Study of Impingement Heat Transfer in Confined Array Jets
摘要
Abstract
Array jet impingement is an effective method to enhance heat transfer performance in microchannels or confined spaces.The effects of dimensionless parameters of jet height/jet distance(Z/dj=0.60～1.67)on the heat transfer of multi-jet impinging flow were investigated from the perspectives of the target surface tem-perature distribution,the flow field information and the global Nusselt number by experiment and numerical simulation.The results show that,the interaction force between the fluids becomes more balanced with an odd number of jet holes.At a constant total flow rate,fewer jet holes lead to better cooling performance.The jet has obvious deviation with relatively smaller jet spacings.The symmetry of the flow structure will gradually re-cover with the increase of the jet spacing,the interaction between jets will weaken,and the temperature distri-bution on the heating surface and the fluid velocity distribution will become more uniform.The flow and heat transfer performances of multiple jets are jointly affected by Z and dj,and Z/dj has little difference in Nusselt number distributions for 2 and 3 jet holes,where the Nusselt number reaches its peak for Z/d=1.67 and 1.25,respectively.The findings contribute to optimizing multiple jets' configurations and further enhancing their heat transfer performances.关键词
狭小空间/射流冲击/强化传热/射流高度/射流间距/Nusselt数Key words
narrow space/jet impingement/heat transfer enhancement/jet height/jet distance/Nusselt number分类
力学引用本文复制引用
李勇,张劲,张迎春,张嘉杰,马素霞,谢公南..受限式阵列射流冲击传热的试验和数值研究[J].应用数学和力学,2025,46(10):1233-1244,12.基金项目
山西省基础研究计划青年基金(202203021212263) （202203021212263）
山西省回国留学人员科研资助项目(2023-055 （）
2023-143) （）
教育部"春晖计划"合作科研项目(202200075) 本文作者衷心感谢中国航空研究院航空科学基金(2024Z008029001)对本文的资助. （202200075）
