摘要
涡轮前温度的热管理目前正面临严峻挑战,需要有合适的冷却技术,本文从三重周期极小曲面(TPMS)在航空发动机换热器上的应用入手,采用数值模拟的方法,研究Primitive结构,晶胞大小变化对其性能的影响。结果表明:晶胞尺寸(7,7,7)减小到晶胞尺寸(6,6,6)时,更容易产生附着流,压降也较大,传热系数较低。晶胞尺寸(7,7,7)增加到晶胞尺寸(7,7,7)时,压降在三种晶格变化中最小,传热系数低于晶胞尺寸(7,7,7)增加到晶胞尺寸(8,8,8)。晶胞尺寸(7,7,7)增加到晶胞尺寸(8,8,8)时,形成明显的分流区和高涡量区域,传热系数也最高。
Thermal management of the pre-turbine temperature is currently facing serious challenges and requires appropriate cooling techniques.In this paper,starting from the application of Triple Periodic Minimal Surfaces(TPMS)on aero-engine heat exchangers,numerical simulations are used to study the Primitive structure,the effect of cell size variation on its performance.The results show that the increase of cell size(7,7,7)to cell size(6,6,6)is more likely to produce adherent flow,and the pressure drop is also larger and the heat transfer coefficient is lower.The pressure drop is the smallest among the three lattice variations and the heat transfer coefficient is lower when cell size(7,7,7)increases to cell size(7,7,7)than when cell size(7,7,7)increases to cell size(8,8,8).The increase in cell size(7,7,7)to cell size(8,8,8)results in the formation of a distinct shunt region and a region of high vorticity and the highest heat transfer coefficient.
作者
张雪丽
余洪伟
何冀淼
柳笑寒
Zhang Xue-li;Xu Hong-wei;He Ji-miao;Liu Xiao-han(Zhangjiajie Institute of Aeronautical Engineering,Hunan Zhangjiajie 427099;Tianjin Institute of Aerospace Mechanical and Electrical Equipment,Tianjin 300462,China)
出处
《内燃机与配件》
2026年第3期15-19,共5页
Internal Combustion Engine & Parts
基金
湖南省教育厅科学研究项目立项项目(基金号24C1330)。
