自激脉冲喷嘴的机理与结构仿真分析

杨家林; 周利坤; 李悦; 杨东升

doi:10.13433/j.cnki.1003-8728.2014.0623

自激脉冲喷嘴的机理与结构仿真分析

doi: 10.13433/j.cnki.1003-8728.2014.0623

杨家林¹,
周利坤^1,2, ,,
李悦¹,
杨东升³

1.
武警工程大学,军交运输系西安 710086;
2.
武警后勤学院天津 300309;
3.
海军91765部队温州 325012

基金项目:

陕西省重点学科建设专项基金项目(102-00x903)资助

详细信息

作者简介:
杨家林(1986-)，硕士研究生，研究方向为军事装备学，960743379@qq.Com

通讯作者:
周利坤，副教授，博士，硕士生导师，172548703@qq.com

计量
- 文章访问数: 147
- HTML全文浏览量: 16
- PDF下载量: 16
- 被引次数: 0
出版历程
- 收稿日期: 2013-01-23
- 刊出日期: 2015-06-10

The Mechanism and Structural Simulation Analysis of the Self Excitation Pulse Nozzles

1.
Engineering University of CAPF, Department of Military Traffic & Transportation,Xi'an 710086;
2.
Logistics College of SAPF, Tianjin 300309;
3.
Navy Unit 91765, Wenzhou 325012

摘要

摘要: 分析了自激脉冲喷嘴的工作原理和自激振荡产生的机理,建立了自激喷嘴的数学模型;利用Fluent仿真软件,研究不同结构参数喷嘴的脉冲射流特性;通过模拟仿真分析,得出了喷嘴的最佳结构参数。结果表明:上、下喷嘴直径和腔长对出流频率、振幅以及流速峰值都有着较为关键的影响;由于涡旋和空化对入口流速的阻碍,以及气体体积分数的不同,出口流速比进口流速大。
- 自激脉冲 /
- 喷嘴 /
- 结构参数 /
- 数值计算
Abstract: The researches on shock pulse nozzle mainly focus on the single cavity dynamic characteristics at homeand abroad, and the studies on its structure parameters are less. The work principle of the self excited pulse nozzleand the mechanism of its self-excited oscillation are analyzed in this paper, and the mathematical model of the selfexcited nozzle is established. Using the Fluent software, the different structure parameters of pulse jet nozzlecharacteristic are studied. Through the simulation analysis, the optimal structural parameters of self excited pulsenozzle are obtained. The results show that upper and lower nozzle diameter and cavity diameter have significantinfluence on the frequency, amplitude and the peak value of flow velocity. Due to the obstacles induced by vortexand cavitation on the inlet velocity and the difference of gas volume fraction, the flow velocity of inlet is bigger thanthat of the outlet.
- calculations /
- cavitation /
- computational fluid dynamics /
- computer simulation

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参考文献(11)

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