航空科学技术2024，Vol.35Issue(2)：81-91,11.DOI:10.19452/j.issn1007-5453.2024.02.010
基于流—固—热耦合的高温伺服阀蛇形流道散热罩散热效率研究
Research on Heat Dissipation Efficiency of Serpentine Flow Channel Heat Dissipation Hood for Hing-temperature Servo Valve Based on Fluid-solid-hermal Coupling
摘要
Abstract
Electro-hydraulic servo systems are widely used in the field of aviation because they are characterized by large hydraulic loads and fast response.When the aircraft is in high temperature working condition,the electro-hydraulic servo system will be greatly affected,which is not conducive to the normal operation of the aircraft.In order to address this problem,this paper adopts the method of fluid-solid-thermal multi-field coupling to optimize the serpentine flow path of high-temperature servo valve heat sink.First of all,this paper introduces the theoretical basis of fluid-solid-heat three-field coupling.Then,seven heat sink models are designed in this paper,and the physical model and fluid model of the heat sink are established respectively.Finally,the heat dissipation effects of the seven models are analyzed on this basis.The results show that increasing the number of runner bars does not improve the heat dissipation efficiency,while increasing the heat sink groove width and groove depth can improve the heat dissipation efficiency,but the heat dissipation effect is not obvious.If the heat dissipation requirement is to be achieved,it can be realized by increasing the flow rate and decreasing the fluid temperature.关键词
电液伺服阀/高温工况/散热罩/流—固—热三场耦合/散热效率Key words
electro-hydraulic servo valves/high-temperature operating conditions/heat shield/fluid-solid-thermal three-field coupling/heat dissipation efficiency分类
航空航天引用本文复制引用
徐铭谦,张健,李佳洋..基于流—固—热耦合的高温伺服阀蛇形流道散热罩散热效率研究[J].航空科学技术,2024,35(2):81-91,11.基金项目
国家自然科学基金(51805108) （51805108）
航空科学基金(20200007077002) （20200007077002）
黑龙江省重点研发计划(GZ20220097) （GZ20220097）
哈尔滨市制造业科技创新人才项目(CXRC20221104079) （CXRC20221104079）
中央高校基本科研业务费专项资金(2572022BF02)National Natural Science Foundation of China(51805108) （2572022BF02）
Aeronautical Science Foundation of China(20200007077002) （20200007077002）
Key Research and Development Project of Heilongjiang Province(GZ20220097) （GZ20220097）
Harbin Manufacturing Tech-nology Innovation Talent Project(CXRC20221104079) （CXRC20221104079）
Special Fund for Basic Research Expenses of Central Universities(2572022BF02) （2572022BF02）
