Kinetic comparative study on aerodynamic characteristics of hypersonic reentry vehicle from near-continuous flow to free molecular flow  

作　　者：Jin Li Dingwu Jiang Xiangren Geng Jianqiang Chen 

机构地区：[1]China Aerodynamics Research and Development Center,Mianyang 621000,Sichuan,China

出　　处：《Advances in Aerodynamics》2021年第1期217-226,共10页空气动力学进展（英文）

基　　金：supported by National Numerical Wind tunnel project of China and the National Natural Science Foundation of China(Grant No.11972362).

摘　　要：A scaled model of the X38-like configuration was simulated under hypersonic conditions for the direct simulation Monte Carlo method and the unified gas kinetic scheme.The inflow conditions considered several flow regimes,from the near-continuum through the slip-transitional to the free molecular regime.Flow fields and surface properties were compared in detail between these two methods.Not only the density and temperature contours distribution but also the surface pressure,heat flux,friction distribution,both kinetic methods give fairly consistent results.Aerodynamics of the model were also achieved and compared.The results provided by both methods agreed with each other very well.The effects of the Knudsen number and angle of attack were assessed.It is meaningful to carry out comparative studies and accelerate both methods to further progress.

关 键 词：DSMC UGKS Aerodynamic RE-ENTRY 

分 类 号：O35[理学—流体力学]