Numerical simulation of dynamic characteristics of an open-end swirl injector

FU Qing-fei; YANG Li-jun; QU Yuan-yuan; GU Bin

Chinese

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Numerical simulation of dynamic characteristics of an open-end swirl injector

更新时间：2026-07-07

- Numerical simulation of dynamic characteristics of an open-end swirl injector
- Vol. 25, Issue 9, (2010)
- 作者机构：
  
  北京航空航天大学宇航学院,北京,100191
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
移动端阅览
FU Qing-fei, YANG Li-jun, QU Yuan-yuan, et al. Numerical simulation of dynamic characteristics of an open-end swirl injector[J]. 2010, 25(9).
DOI：

FU Qing-fei, YANG Li-jun, QU Yuan-yuan, et al. Numerical simulation of dynamic characteristics of an open-end swirl injector[J]. 2010, 25(9). DOI：

摘要

从喷嘴动力学理论分析和数值模拟两方面入手

对敞口型离心式喷嘴动力学特性进行了研究.通过对入口处流量施加周期性扰动的办法对喷嘴对于外部扰动的响应特性进行了分析.结果表明:表面波引起旋流腔内液膜厚度发生振荡

进而引起喷嘴出口流量的脉动.而旋转波的频率则较低.喷嘴出口流量脉动与喷嘴压降脉动之间的相位差随着扰动频率的增大而增大

数值模拟结果与线性的喷嘴动力学理论符合较好.

Abstract

Theoretical studies and numerical simulation on dynamic characteristics of an open-end swirl injector were performed.The response of the injector flow to external excitations was investigated by superimposing periodical oscillation of flow-rate at the inlet.The numerical simulation results show that the surface wave causes oscillation of the liquid film in the swirl chamber

and then the flow oscillation occurs at the spout.Moreover

the frequency of the vortex wave is much smaller.The phase angle between the flow oscillation at spout and the pressure drop oscillation is proportional to the oscillation frequency

which agrees well with the linear injector dynamic characteristics theory.

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