Numerical simulation and a hybrid method of supersonic turbulent base heating

YUAN Junya; CAI Guobiao; ZHAO Lu

doi:10.13224/j.cnki.jasp.2018.10.016

Numerical simulation and a hybrid method of supersonic turbulent base heating

doi: 10.13224/j.cnki.jasp.2018.10.016

1.
School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China
2.
Beijing University of Aeronautics and Astronautics,Beijing 100191

基金项目: National Natural Science Foundation of China (11302016)

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出版历程
- 收稿日期: 2017-06-08
- 刊出日期: 2018-10-28

Numerical simulation and a hybrid method of supersonic turbulent base heating

1.
School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China
2.
Beijing University of Aeronautics and Astronautics,Beijing 100191

Funds: National Natural Science Foundation of China (11302016)

摘要

摘要: Detached eddy simulation (DES) model was used to better capture large vortex structure and unsteady flow feature near cone base. Good base heating results were achieved using proper grid and numerical method. The influence of inflow conditions (like Mach number, Reynolds number) and configuration (bluntness ratio of the cone) on base heating was discussed based on numerical computational results. Compared with base heat flux, base pressure can be predicted more accurately by numerical simulation and the time consuming was shorter. A hybrid method combining numerical simulation with experimental correlation was proposed to predict supersonic turbulent base heating. A review of base heating experiment and correlations for slender cone was presented, and a revised correlation was proposed based on the above simulation results. Compared with the experiment data, the maximum error was 24%, a good result for base heating prediction. This proves that the hybrid method using the revised correlation performs well in predicting supersonic turbulent base heating of slender sphere cone and can meet needs of engineering design.
- base heating /
- detached eddy simulation /
- hybrid method /
- experimental correlation /
- slender sphere cone
Abstract: Detached eddy simulation (DES) model was used to better capture large vortex structure and unsteady flow feature near cone base. Good base heating results were achieved using proper grid and numerical method. The influence of inflow conditions (like Mach number, Reynolds number) and configuration (bluntness ratio of the cone) on base heating was discussed based on numerical computational results. Compared with base heat flux, base pressure can be predicted more accurately by numerical simulation and the time consuming was shorter. A hybrid method combining numerical simulation with experimental correlation was proposed to predict supersonic turbulent base heating. A review of base heating experiment and correlations for slender cone was presented, and a revised correlation was proposed based on the above simulation results. Compared with the experiment data, the maximum error was 24%, a good result for base heating prediction. This proves that the hybrid method using the revised correlation performs well in predicting supersonic turbulent base heating of slender sphere cone and can meet needs of engineering design.
- base heating /
- detached eddy simulation /
- hybrid method /
- experimental correlation /
- slender sphere cone

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参考文献(20)

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