Investigation on aerodynamic force effect of vacuum plumes using pressure-sensitive paint technique and CFD-DSMC solution  

作　　者：WU Jing BITTER Martin CAI GuoBiao HE BiJiao KAEHLER Christian 

机构地区：[1]School of Astronautics, Beijing University of Aeronautics and Astronautics [2]R&D Center, CRRC Qingdao Sifang Co., Ltd. [3]Institute of Fluid Mechanics and Aerodynamics, Bundeswehr University Munich

出　　处：《Science China(Technological Sciences)》2017年第7期1058-1067,共10页中国科学（技术科学英文版）

基　　金：supported by China Scholarship Council(CSC)

摘　　要：Pressure-sensitive paint(PSP) technique was employed to experimentally investigate the aerodynamic force effect of vacuum plume in this study. The characterization and comparison for two types of PSP were firstly conducted in an air pressure range from0.05 to 5000 Pa. The PSPs were prepared using PtTFPP as the active dye and different binders, i.e., polymer-ceramic(PC) and poly(1-trimethylsilyl-1-propyne) [poly(TMSP)]. The static calibrations showed that PtTFPP/poly(TMSP) had a higher pressure sensitivity and a lower temperature dependency compared to PtTFPP/PC in this pressure range. The pressure distributions of a single and two interacting plumes impinging onto a flat plate model were measured using PSP technique. The experimental data were compared to numerical solutions that combined both the computed fluid dynamics(CFD) and direct simulation Monte Carlo(DSMC) methods. Remarkable agreements were achieved, demonstrating the feasibility and accuracy of the numerical approach.Finally, the aerodynamic force effect of interacting plumes at different separation distances was investigated numerically.

关 键 词：vacuum plume plume interaction aerodynamic force effect pressure-sensitive paint CFD-DSMC 

分 类 号：O354[理学—流体力学]