Citation: | WU X Y, KONG X P, SHEN Z H, et al. Numerical investigation on formation process of high-enthalpy flow fields in hydrogen-driven shock tunnels[J]. Acta Aerodynamica Sinica, 2025, 43(X): 1−10. DOI: 10.7638/kqdlxxb-2024.0105 |
To comprehensively investigate the formation of high-enthalpy flow fields in hydrogen-driven shock tunnels, this study conducted an in-depth numerical investigation using an implicit algorithm with second-order spatial accuracy and dual-time stepping. The simulation covered the entire evolution from tunnel initiation to the establishment of a stable flow field at the nozzle exit. The results demonstrated that under initial conditions of 50 MPa hydrogen in the high-pressure section and 100 kPa air in the low-pressure section (both at 300 K), the double diaphragms ruptured at 8.54 ms. By 10.20 ms, the flow pressure at the nozzle inlet reached 29.8 MPa with a temperature of
[1] |
|
[2] |
KANEKO M, MEN’SHOV I, NAKAMURA Y. Reflected shock wave/boundary layer interaction in high-enthalpy shock tunnel[C]//Proc of the Fluids 2000 Conference and Exhibit, Denver, CO, USA. AIAA, 2000: AIAA 2000-2600. DOI: 10.2514/6.2000-2600
|
[3] |
|
[4] |
|
[5] |
孔小平, 陈卫, 罗仕超, 等. 高焓激波风洞有效试验时间标定研究[J]. 实验流体力学, 2024, 38(X): 1-7. [5] 孔小平, 陈卫, 罗仕超, 等. 高焓激波风洞有效试验时间标定研究[J/OL]. 实验流体力学, 2024, 38(X): 1-7. DOI: 10.11729/syltlx20230087
KONG X P, CHEN W, LUO S C, et al. Study on calibration of effective test time in high enthalpy shock tunnel[J/OL]. Journal of Experiments in Fluid Mechanics, 2024, 38(X): 1-7 (in Chinese).
|
[6] |
|
[7] |
|
[8] |
汪球, 赵伟, 余西龙, 等. 高焓激波风洞有效试验时间的测量研究[C]//第十六届全国激波与激波管学术会议论文集, 2014: 431-435.
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
GUPTA R, YOS J, THOMPSON R A. A review of reaction rates and thermodynamic and transport properties for the 11-species air model for chemical and thermal nonequilibrium calculations to 30000 K: NASA RP 1232 [R]. NASA, 1990.
|
[17] |
|
[18] |
陈强. 激波管流动的理论与实验技术[M]. 合肥: 中国科学技术大学出版社, 1979.
|
[19] |
BRUN R. Shock tubes and shock tunnels: Design and experiments: RTO-EN-AVT-162[R]. RTO, 2009.
|