Numerical and experimental study on inversing-rotating aero-valves of PDE

GONG Ji-shuang; FAN Yu-xin; WANG Jia-hua; ZHAN Huan; ZHANG Jing-zhou

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Numerical and experimental study on inversing-rotating aero-valves of PDE

更新时间：2026-07-07

- Numerical and experimental study on inversing-rotating aero-valves of PDE
- Vol. 26, Issue 8, (2011)
- 作者机构：
  
  南京航空航天大学能源与动力学院,南京,210016
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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GONG Ji-shuang, FAN Yu-xin, WANG Jia-hua, et al. Numerical and experimental study on inversing-rotating aero-valves of PDE[J]. 2011, 26(8).
DOI：

GONG Ji-shuang, FAN Yu-xin, WANG Jia-hua, et al. Numerical and experimental study on inversing-rotating aero-valves of PDE[J]. 2011, 26(8). DOI：

摘要

为了减小脉冲爆震发动机爆震燃烧时气动阀的倒流量

提出一种倒旋流气动阀

给出了不同倒流旋流数下模型气动阀的流动分析.结果表明:对于几何尺寸给定的气动阀

存在一个最佳的旋流数

此时气动阀的单向阀性能最好

气动阀的最佳旋流数约为1.0.此外

设计了旋流数为1.364的气动阀

进行了实验

冷态实验结果验证了数值方法的可靠性;热态实验表明采用该气动阀可以在直径114mm的爆震管获得频率为40Hz稳定的爆震波.

Abstract

As a new concept aero-valve used in pulse detonation engine (PDE)

inversing-rotating aero-valve was mentioned to improve one-way performance of the valve in this paper.A useful inclusion was obtained after a series of numerical investigation

that is

the swirl number is the key parameter affected the valve's performance.The optimum value of swirl number is approximately one.In addition

an aero-valve which swirl number equals to 1.364 was made to experiment.The experimental results without ignition demonstrate the conclusion revealed by numerical way.Finally

detonation waves at the operating frequency of 40Hz are obtained in a tube with inner diameter 114mm.

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