Parameters for evaluating the efficiency of inlet compression  

作　　者：Keting CHEN Lianjie YUE Xinyu ZHANG 

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 and Science,University of Chinese Academy of Science,Beijing 100049,China

出　　处：《Chinese Journal of Aeronautics》2021年第12期51-56,共6页中国航空学报（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.11672309 and 11472279)。

摘　　要：The efficiency parameters are studied in this paper for evaluating the compression quality of the inlets with different compression degrees and assessing different design methods.Selfconsistency is proposed for the efficiency parameters,based on two mathematically derived efficiency parameters,entropy rise coefficient and compression quality efficiency.Two efficiency parameters are then examined for equal intensity shocks system to show their capabilities in characterizing the quality of compression system with different compression degrees,and representing the average compression efficiency of the entire inlet.And the process efficiency and compression quality efficiency are compared in the Mollier diagram to afford a clear understanding of their difference in evaluating the overall and the local compression efficiency.

关 键 词：Airbreathing engine Compression efficiency Compression quality INLET SELF-CONSISTENCY 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]