它激剪切流动诱发振荡射流的研究

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英文篇名：STUDY OF OSCILLATING PULSED JET INDUCED BY EXTERNAL EXCITATION SHEAR FLOW 中文刊名：西南石油学院学报 英文刊名：JOURNAL OF SOUTHWEST PETROLEUM INSTITUTE 作者：唐川林 ; 张凤华 ; 杨林 ; 廖荣庆 ; 熊继有 英文作者：TANG Chuanlin(Chongqing University) ; ZHANG Fenghua ; YANG Lin ; et al. JOURNAL OF SOUTHWEST PETROLEUM INSTITUTE ; VOL. 22 ; NO. 1 ; 1-4 ; 2000 (ISSN1000-2634 ; IN CHINESE) 中文关键词：剪切流动 ; 自激振动 ; 振荡 ; 射流 ; 实验室试验 ; 分析 英文关键词：shear flow ; self-excited vibration ; oscillations ; fluidics ; laboratory testing ; analysis 出版日期：2000-03-30 机构：重庆大学机械学院!重庆市400044,重庆大学机械学院!重庆市400044,重庆大学机械学院!重庆市400044,西南石油学院,西南石油学院 年：2000 期：01 出版单位：西南石油学院学报

摘要

论述了它激剪切流动诱发振荡射流的机理 ,分析了它激有效激励条件 ,并对它激振荡射流的轴心压力进行了测试和频谱分析 ,给出了压力信号的功率谱。实验表明这种射流振荡幅值高 ,频率宽广 ,冲蚀效果优于普通射流。
The oscillating mechanism of the jet induced by external excitation shear flow was described and the excitation condition was analyzed in this paper. Spectrum analysis was applied to investigate the pressure oscillations in the center of the jet which are measured in laboratory. It is shown experimentally that its oscillating amplitude is very large and the jet has broad frequency, Its erosive effect is superior to that of the ordinary jet.

引文

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