摘要
本文对自激振荡脉冲喷嘴振荡腔的几何尺寸进行寻优,发现腔室内腔长的几何尺寸对振荡效果的影响大于腔径的影响;对轴心压力衰减规律的探索,证明其有效喷距为喷嘴入口直径的9～15倍;设立的模型可以作为评价动态压力信号的波形特征、频率结构及能量分布的参考。
In this paper, the geometric size of the oscillating chamber of self-exciting oscillation pulse nozzle is optimized. It is found that the influence of the length of interior chamber on oscillation effect is greater than its diameter. An exploration of axle centre pressure attenuation rule proves that the effec- tive injection distance is 9～15 times as much as the diameter of nozzle entry. The model designed can be regarded as the reference for evaluating the waveform feature of dynamic pressure signal, frequency structure and energy distribution.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1992年第6期56-60,共5页
Natural Gas Industry
关键词
脉冲
射流
振荡腔
波形分析
钻头
pulse jet
oscillation chamber
waveform analysis
frequency spectrum analysis
effective injection distance
