Experimental Study on Thermoacoustic Instability in a Rijke Tube

doi:10.7652/xjtuxb201405004

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Experimental Study on Thermoacoustic Instability in a Rijke Tube

更新时间：2025-07-09

- Experimental Study on Thermoacoustic Instability in a Rijke Tube
- Vol. 48, Issue 5, Pages: 21-26(2014)
- 作者机构：
  
  1. 西安交通大学航天航空学院,西安,710049
  2. 西安交通大学机械结构强度与振动国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201405004
  CLC： V231.12
- Online First：10 May 2014，
  
  Published：2014
- 稿件说明：
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Experimental Study on Thermoacoustic Instability in a Rijke Tube[J]. 2014, 48(5): 21-26.
DOI：

Experimental Study on Thermoacoustic Instability in a Rijke Tube[J]. 2014, 48(5): 21-26. DOI： 10.7652/xjtuxb201405004.

摘要

针对推进系统常发生的具有破坏性的热声振荡现象

为了获得热声振荡的共振频率信息并提供一种有效的抑制途径

自行搭建了Rijke管热声振荡实验测试平台

在不同热源位置、不同热源功率及不同空气流速等条件下测量了热声振荡的频率及声压。实验测得的热声振荡频率均在110～117 Hz之间

属低频振荡

且热声振荡的频率和声压随热源功率和空气流量的增加整体呈现升高的趋势; 相反

随着热源的后移

共振频率下降

当热源在Rijke管的1/4处时

热声振荡的发声强度达到最大。此外

随着热源功率和空气流速的增加

热声不稳定的区域随之增大。实验结果与理论计算结果吻合良好

从而可为推进系统热声振荡的主被动联合控制方法提供丰富、可靠的实验数据。

Abstract

In view of destructive thermoacoustic instability in propulsion systems

it is necessary to obtain oscillation frequency and then develop an effective approach to suppress this instability. A Rijke tube was constructed to measure the oscillation frequency in the experimental conditions of different heat source position

heat source power and air flow rate. The measured oscillation frequencies got 110-117 Hz

and the oscillation frequency and sound intensity rose with the increasing heat source power and air flow rate

while the oscillation frequency lowered with the heat source moving afterwards

the sound intensity reached the maximum when heat source was set at the position of a quarter of Rijke tube length

and the thermoacoustic instability region extended with increasing heat source power and air flow rate. All experimental results coincide well with the theoretical predictions. The experimental data obtained may facilitate developing active/passive combined suppression of thermoacoustic oscillation for practical propulsion systems.

关键词

Keywords

references

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