Numerical simulation of the thermal non-equilibrium flow-field characteristics of a hypersonic Apollo-like vehicle

作     者：Minghao Yu Zeyang Qiu Bo Lv Zhe Wang 喻明浩;邱泽洋;吕博;王哲

作者机构：Faculty of Mechanical and Precision Instrument EngineeringXi'an University of TechnologyXi'an 710048China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2022年第31卷第9期

页      面：376-385页

核心收录：

学科分类：08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.12175177) the China Postdoctoral Science Foundation(Grant No.2021M693889) 

主　　题：atmospheric reentry demonstrator reentry altitude flow-field characteristics two-temperature model 

摘      要：In order to investigate the relationship between the flow-field parameters outside the vehicle and the altitude,this paper takes the Atmospheric Reentry Demonstrator(ARD)with an angle of attack of-20°as the research object and adopts a two-temperature model coupled with the shear-stress transport k-ωturbulence model to focus on the variation of flow-field parameters including flow-field pressure,Mach number and temperature with the reentry *** is found that the flow-field high-pressure region and low-Mach region both appear in the shock layer near the head of the ARD,while the maximum pressure of the surface appears on the windward side of the ARD s head with a toroidal distribution,and the numerical magnitude is inversely proportional to the radius of the *** fluid through the shoulder of the ARD flow expansion plays a dominant role,the airflow velocity increases,the Mach number of the windward side of the rear cone increases and the flow-field pressure and surface pressure rapidly *** the fluid passes through the shock layer,the translational-rotation temperature will increase before the vibration-electron temperature,there is a thermal non-equilibrium effect and the two temperatures will rapidly decrease again when approaching the surface of the ARD due to the existence of temperature *** the same time,both the windward side of the shoulder and the back cover of the ARD suffer from a large thermal load and require thermal protection.