Theories and methods for designing hypersonic high-enthalpy flow nozzles
Theories and methods for designing hypersonic high-enthalpy flow nozzles作者机构:State Key Laboratory of High Temperature Gas DynamicsInstitute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering ScienceUniversity of Chinese Academy of SciencesBeijing 100049China
出 版 物:《Chinese Journal of Aeronautics》 (中国航空学报(英文版))
年 卷 期:2022年第35卷第1期
页 面:318-339页
核心收录:
学科分类:080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 0801[工学-力学(可授工学、理学学位)]
基 金:co-supported by the National Natural Science Foundation of China(Nos.11672357 11727901)
主 题:Boundary layer correction High-enthalpy flow Hypersonic wind tunnel Nozzle design Real-gas effects
摘 要:Hypersonic high-enthalpy wind tunnels have been a challenge to ground tests in aerospace research area for decades and its test flow uniformity is one of the most important parameters for evaluating wind tunnel *** to the performance requirement,theories and methods for designing hypersonic flow nozzles at high enthalpy conditions are quite difficult,but very interesting topics,especially when air molecule dissociations take place in wind tunnel test gas *** this paper,fundamental theories and important methods for nozzle designs are briefly reviewed with the emphasis on two-dimensional axisymmetric nozzles for hypersonic high-enthalpy wind tunnels,including the Method of Characteristics(MOC),the graphic design method,the Sivells method,the theory for boundary correction,and the CFD-based design optimization *** theories and methods had been proposed based on several physical issues,respectively,which play important roles in nozzle flow expansion *** issues cover the expansion wave generation and reflection,the boundary layer development,the real gas effect of hypersonic high-enthalpy *** arising from applications of these methods in hypersonic high-enthalpy nozzle design are discussed in detail and the state of the art of the nozzle design technologies that have reached for decades is summarized with some brief ***,the prospect for the hypersonic nozzle design methods,and its numerical and experimental verifications are provided with from authors’viewpoint for readers’reference.