突扩管爆轰推进及其喷管推力性能数值模拟

张焕好; 陈志华; 孙晓晖; 范宝春

doi:10.11858/gywlxb.2010.06.003

突扩管爆轰推进及其喷管推力性能数值模拟

doi: 10.11858/gywlxb.2010.06.003

南京理工大学瞬态物理重点实验室，江苏南京 210094

详细信息

通讯作者:
陈志华

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出版历程
- 收稿日期: 2009-10-13
- 修回日期: 2010-03-19
- 刊出日期: 2010-12-15

Numerical Simulations on the Thrust Performance of Nozzles and Detonation Propulsion of a Sudden Area Change Tube

Science and Technology on Transient Physics Laboratory, Nanjing University of Science & Technology, Nanjing 210094, China

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Corresponding author: CHEN Zhi-Hua

摘要

摘要: 基于均相反应流N-S方程以及k-湍流模型与EBU燃烧模型，对爆轰波在突扩管内传播，以及主爆轰管加装不同形状喷管后对推力性能的影响进行了数值模拟。结果表明，爆轰波从预爆管进入主管后，能迅速诱发新的爆轰。另外，主管加装各类喷管后，单次爆轰所得的平均推力发生变化。其中，发动机端部推力随喷管收敛角度的增大而提高，并随扩张角度的增大而降低，但平均总推力却随扩张角度的增大而提高，随收敛角度的增大而降低，并存在一个最佳扩张角。
- 爆轰波 /
- 燃烧 /
- 推进 /
- 喷管形状
Abstract: Based on the homogenous fluid reaction N-S equations, the k- turbulent model and the EBU combustion model, the propagation of detonation wave in a sudden area change tube and the influences on the thrust performance of the main tube with different nozzles were investigated. Our results show that, a new detonation can be initiated promptly when the detonation wave of the pre-detonator injects into the main tube. In addition, with the mount of nozzle, the average thrust of single detonation varies. The head-end thrust increases with the raise of the contracting angle of nozzle, and decreases with the raise of its diverging angle. But the average total thrust increases with the diverging angle, and decreases with the raise of converging angle. There also exists an optimal diverging angle which can generate maximum average total thrust.
- detonation wave /
- combustion /
- propulsion /
- nozzle shape

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参考文献(23)

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