Accurately predicting hypersonic transitional flow on cone via a symmetry approach

作     者：Weitao BI Kexin ZHENG Zhou WEI Zhensu SHE Weitao BI;Kexin ZHENG;Zhou WEI;Zhensu SHE

作者机构：State Key Laboratory for Turbulence and Complex Systems and Department of Mechanics and Engineering ScienceCollege of EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Aerodynamics and Computational Aerodynamics InstituteChina Aerodynamics Research and Development CenterMianyang 621000China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2023年第36卷第7期

页      面：337-347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] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Numerical WindTunnel Project,China(No.NNW2019ZT1-A03) the National Natural Science Foundation of China(Nos.91952201,11372008 and 11452002) 

主　　题：Cones Heat flux Hypersonic boundary layers Transition flow Turbulence models 

摘      要：A new algebraic transition model is proposed based on a Structural Ensemble Dynamics(SED)theory of wall turbulence,for accurately predicting the hypersonic flow heat transfer on *** model defines the eddy viscosity in terms of a two-dimensional multi-regime distribution of a Stress Length(SL)function,and hence is named as *** paper presents clear evidence of precise predictions of transition onset location and peak heat flux of a wide range of hypersonic Transitional Boundary Layers(TrBL)around straight cone at zero incidence,to an unprecedented accuracy as validated by over 70 measurements for varying five crucial influential factors(Mach number,temperature ratio,cone half angle,nose Reynolds number and noise level).The results demonstrate the universality of the postulated multi-regime similarity structure,in characterizing not only the spatial non-uniform distribution of the eddy viscosity in hypersonic TrBL on cone,but also the dependence of the transition onset location on the five influential *** latter yields a novel correlation formula for transition center Reynolds number which takes similar functional form as the SL function within the symmetry *** is concluded that the SED-SL model simulates TrBL around cone with uniformly high accuracy,and then points out to an optimistic alternative way to construct hypersonic transition model.