| 自激振荡脉冲射流装置的频率特性 |
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| 引用本文： | 杨林,廖荣庆,等.自激振荡脉冲射流装置的频率特性[J].西南石油学院学报,2001,23(1):43-45. |
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| 作者姓名： | 杨林 廖荣庆 |
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| 作者单位： | [1]重庆大学机械学院，重庆市400044 [2]西南石油学院，四川 |
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| 基金项目： | 国家自然科学基金资助项目（59874033）；“油气藏
地质和开发工程”国家重点实验室基金课题 （PLN9703）。 |
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| 摘 要： | 基于流体网络理论建立了自激振荡脉冲射流装置的相似网络模型，数值计算分析表明，该喷嘴装置具有压力谐振特性和低通滤波特性，在系统固有频率附近，压力响应幅值最大，其固有频率主要由喷嘴形状、结构参数和射流中压力扰动波波速决定，流体压力、振荡腔长、下喷嘴大小和空隙度等对系统的频率特性影响很大，存在产生最大谐振峰值的参数范围，理论分析与实验吻合。提出了相应的自激振荡脉冲振荡喷嘴设计准则，即喷嘴装置的固有频率应接近来流脉动主频。
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| 关 键 词： | 自激振荡 脉冲射流装置 频率特性 流体网络 石油钻井 |
| 文章编号： | 1000-2634(2001)01-0043-03 |
| 修稿时间： | 2000年6月29日 |
FREQUENCY CHARACTERISTICS
OF PULSATION-JET DEVICE OF SELF-EXCITED OSC ILLATION |
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| YANG Lin.FREQUENCY CHARACTERISTICS
OF PULSATION-JET DEVICE OF SELF-EXCITED OSC ILLATION[J].Journal of Southwest Petroleum Institute,2001,23(1):43-45. |
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| Authors: | YANG Lin |
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| Affiliation: | Southwest Petroleum Inst |
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| Abstract: | Based on the theory of fluid network, we established the similar mathematical model of pulsation-jet device of the self-excited oscillation. The numerical results, in agreement with the tests, had clearly shown that the jet nozzle was functions of oscillator and lowpass filter, and the maximal pressure response could be obtained for input flow, and its main frequencies close to the natural frequency of the nozzle. The natural frequency of the nozzle is directly determined by its main structural parameters and wave speed in jet flow, so the parameters such as pressure, the length of oscillation cavity, the diameter of lower nozzle and porosity of jet flow have significant effects on its frequency characteristics. Moreover the design standard of the device was presented in this paper, that is to say, the natural frequency of the nozzle should be close to that of input oscillating flow. |
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| Keywords: | self-exciting oscillation water jet frequency characteristic fluid network |
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