Study of coupled effect of impingement jet cooling of kerosene with solid structure  

作　　者：DU MengMeng ZHONG FengQuan XING YunFei ZHANG XinYu 

机构地区：[1]State Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China [2]School of Engineering Science,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China(Technological Sciences)》2019年第11期2021-2028,共8页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 11672307);the Youth Innovation Promotion Association of the Chinese Academy of Sciences

摘　　要：Characteristics of flow and heat transfer of kerosene impingement jets were studied numerically.The coupled effect of heat transfer of fluid and structure was investigated.Numerical simulation of fluid flow shows that compared to convective heat transfer of kerosene flow in cooling channels,impingement jet cooling significantly enhances heat transfer ability.At the same time,the pressure loss is below one atmospheric pressure.Both stress and strain of high temperature nickle-based alloy structure were analyzed with typical thermal loading and impingement cooling effect.The numerical results show that temperature distribution in the hot surface of the solid structure is relatively uniform and far below the maximum allowable temperature of the alloy material.The strength analysis shows that both stress and strain of the solid structure meet the material requirements.Characteristics of flow and heat transfer of kerosene impingement jets were studied numerically. The coupled effect of heat transfer of fluid and structure was investigated. Numerical simulation of fluid flow shows that compared to convective heat transfer of kerosene flow in cooling channels, impingement jet cooling significantly enhances heat transfer ability. At the same time, the pressure loss is below one atmospheric pressure. Both stress and strain of high temperature nickle-based alloy structure were analyzed with typical thermal loading and impingement cooling effect. The numerical results show that temperature distribution in the hot surface of the solid structure is relatively uniform and far below the maximum allowable temperature of the alloy material. The strength analysis shows that both stress and strain of the solid structure meet the material requirements.

关 键 词：IMPINGEMENT JET COOLING HYDROCARBON fuel heat TRANSFER enhancement fluid-solid coupling 

分 类 号：TG1[金属学及工艺—金属学]