Analysis of plug-in-convergent-divergent nozzle in unsteady flow

被引：0

作者：

Wang, Yan-Yan ^{[1
]}

Weng, Chun-Sheng ^{[1
]}

机构：

[1] National Key Laboratory of Transient Physics, NJUST, Nanjing

来源：

Gongcheng Lixue/Engineering Mechanics | 2014年 / 31卷 / 12期

关键词：

Detonation wave; Fluid dynamics analysis; Nozzle; Propulsive performance; Unsteady two-phase flow;

D O I：

10.6052/j.issn.1000-4750.2013.06.0542

中图分类号：

学科分类号：

摘要：

Considering the oscillatory flow in a pulse detonation engine (PDE), its plug-in-convergent-divergent nozzle was designed, tested and analyzed to improve the thrust of the pulse detonation rocket engines (PDREs). The plug-in-convergent-divergent nozzle is found to be effective for improving the propulsive performance of a PDRE, with 32.4% and 29.52% thrust augmentation for a PDRE at 10 Hz and 15 Hz, respectively. It is also found that the divergent part of a nozzle can utilize the potential capacity of exhaust gas at high temperature and pressure by accelerating the flow gas produced from the detonation chamber of a PDRE. In addition, the plug in the nozzle is demonstrated to be capable of keeping a high pressure at thrust wall, and making thrust augmentation possible for a PDRE by using the plug-in-convergent-divergent nozzle. ©, 2014, Tsinghua University. All right reserved.

引用

页码：223 / 227

页数：4

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