An Improved Heat Transfer Correlation for Supercritical Aviation Kerosene Flowing Upward and Downward in Vertical Tubes  

作　　者：LI Yong CHEN Youqian ZHANG Yingchun SUN Feng XIE Gongnan 

机构地区：[1]School of Mechanical Engineering,Northwestern Polytechnical Univerisity,Xi’an,710072,China [2]School of Marine Science and Technology,Northwestern Polytechnical University,Xi’an,710072,China [3]Research&Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen 518057,China

出　　处：《Journal of Thermal Science》2020年第1期131-143,共13页热科学学报（英文版）

基　　金：sponsored by the National Natural Science Foundation of China (51676163);the National 111 Project under Grant No. B18041;the Fundamental Research Funds of Shenzhen City (JCYJ20170306155153048)

摘　　要：Correlations are crucial to the design of cooling channels employed in regenerative cooling systems for scramjets.In this paper,correlations for the aviation kerosene flowing upward and downward in vertical tubes are studied and discussed.Four existing correlations are assessed against the available experimental data.To further improve the prediction accuracy of the heat transfer behaviors of the supercritical aviation kerosene,a new dimensionless parameter(Qi)relevant to the heat flux is proposed and introduced into the construction of a new correlation.Verification shows that the new correlation is more accurate than existing correlations.Correlations are crucial to the design of cooling channels employed in regenerative cooling systems for scramjets. In this paper, correlations for the aviation kerosene flowing upward and downward in vertical tubes are studied and discussed. Four existing correlations are assessed against the available experimental data. To further improve the prediction accuracy of the heat transfer behaviors of the supercritical aviation kerosene, a new dimensionless parameter(Qi) relevant to the heat flux is proposed and introduced into the construction of a new correlation. Verification shows that the new correlation is more accurate than existing correlations.

关 键 词：CORRELATION supercritical n-decane prediction accuracy heat flux vertical tube 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]