马赫反射中楔尾折角对马赫杆高度的影响研究  

lnfluence of Wedge Tail Angle on Mach Rod Height in Mach Reflection

作　　者：白晨媛 曲正奇 Bai Chenyuan;Qu Zhengqi(School of Aeronautic Science and Engineering,Beihang University,Beijing 1000191,China)

机构地区：[1]北京航空航天大学航空科学与工程学院,北京51000191

出　　处：《气动研究与试验》2025年第1期36-40,共5页Aerodynamic Research & Experiment

摘　　要：激波反射是超声速流场中常见的现象,分为正规反射和马赫反射两种类型,其中马赫反射的流场结构复杂。从20世纪80-90年代开始,不同学者围绕马赫反射问题给出了不同的理论模型,但这些模型中都没有考虑楔尾折角的影响,同时这些模型的正确性往往需要计算流体力学的结果进行验证。用计算流体力学进行数值模拟时,楔尾折角是不得不考虑的一个因素。因此研究楔尾折角对马赫杆高度的影响既可以得到有用的学术结果,也可以对理论模型的正确性给予一定的参考意见。本文围绕该问题展开了研究,发现楔尾折角对马赫杆高度的影响不可忽略,某些条件下影响甚至达到8.9%。Shock reflection is a common phenomenon in the ultrasonic flow field,It is divided into two types:normal reflection and Mach reflection,where the flow field structure of Mach reflection is complex.Since the 1980s and 1990s,different scholars have given different theoretical models around the Mach reflection problem,none of which considers the influence of wedge-tail folding,and the correctness of these models often requires the results of computational fluid dynamics.The wedge-tail folding angle is a factor that has to be considered when performing numerical simulation with computational fluid dynamics.Therefore,studying the effect of the wedge-tail folding angle on the Mach pole height can both obtain useful academic results and give certain reference opinions for the theoretical model confirmatory.This paper shows that the influence of the wedge-tail folding angle on the Mach pole height cannot be ignored,and it even reaches 8.9%under some conditions.

关 键 词：马赫反射 楔尾折角 马赫杆高度 

分 类 号：O355[理学—流体力学]