自激吸气脉冲射流喷嘴性能的研究
发布时间：2018-10-12 13:18
【摘要】：在阅读国内外大量文献的基础上，研究了淹没时不同工况下自激吸气脉冲射流装置的打击特性和吸气的性能，确定了射流均值打击力的分布范围以及规律，分析了无量纲参数对射流相对打击力的影响以及对射流相对吸气量的影响，得出了最优性能参数以及最优吸气参数。本文的研究结果为深入研究深水自激吸气脉冲射流提供了依据。 第一章分析了详细概况了国内外自激脉冲射流的进展情况。第二章依据水射流理论，分别分析了分淹没射流的产生结构以及有何种特性，和淹没射流的产生结构以及有何种特性，详细分析了射流是如何对物体作用的；阐述了自激脉冲射流的产生机理和工作原理；根据淹没射流的产生机理，对射流装置的波速和频率进行分析，初步分析了淹没条件下自激吸气式脉冲射流的产生机理。第三章分析了不同工况条件下自激吸气式脉冲射流装置的性能。运用无量纲分析了非淹没条件下和淹没条件下最佳相对打击力的参数配比，并且分析了淹没条件下吸气比不吸气相对打击力提升的百分比，并且运用无量纲法分析了淹没条件下参数配比（上下喷嘴面积比、腔径与上喷嘴直径比、腔长与上喷嘴直径比以及围压与工作压力比）与相对吸气量之间的影响关系。分析了不同参数对打击范围的影响。
[Abstract]:On the basis of reading a large number of literatures at home and abroad, this paper studies the striking characteristics and inspiratory performance of the self-excited inspiratory pulse jet device under different operating conditions, and determines the distribution range and law of the mean impact force of the jet. The effects of dimensionless parameters on the relative impact force of the jet and on the relative suction capacity of the jet are analyzed. The optimal performance parameters and the optimal inspiratory parameters are obtained. The results of this paper provide a basis for further study of deep water self-excited inspiratory pulse jet. In the first chapter, the progress of self-excited pulse jet at home and abroad is analyzed in detail. In the second chapter, according to the theory of water jet, the structure and characteristics of the submergence jet are analyzed, and the structure and characteristics of the submerged jet are analyzed in detail, and how the jet acts on the object is analyzed in detail. The generation mechanism and working principle of self-excited pulsed jet are expounded, according to the generation mechanism of submerged jet, the wave velocity and frequency of jet device are analyzed, and the mechanism of self-excited inspiratory pulse jet under submerged condition is analyzed preliminarily. In chapter 3, the performance of self-excited inspiratory pulse jet under different operating conditions is analyzed. Using dimensionless analysis, the optimum ratio of relative impact force under non-submerged condition and submerged condition is analyzed, and the percentage of inspiratory ratio to non-suction relative to impact force under submerged condition is analyzed. The relationship between the ratio of parameters (area ratio of upper and lower nozzles, the ratio of cavity diameter to upper nozzle diameter, the ratio of cavity length to upper nozzle diameter and the ratio of confining pressure to working pressure) and the relative inspiratory capacity is analyzed by using dimensionless method. The influence of different parameters on the range of strike is analyzed.
【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV136;TV697.31
本文编号：2266269
[Abstract]:On the basis of reading a large number of literatures at home and abroad, this paper studies the striking characteristics and inspiratory performance of the self-excited inspiratory pulse jet device under different operating conditions, and determines the distribution range and law of the mean impact force of the jet. The effects of dimensionless parameters on the relative impact force of the jet and on the relative suction capacity of the jet are analyzed. The optimal performance parameters and the optimal inspiratory parameters are obtained. The results of this paper provide a basis for further study of deep water self-excited inspiratory pulse jet. In the first chapter, the progress of self-excited pulse jet at home and abroad is analyzed in detail. In the second chapter, according to the theory of water jet, the structure and characteristics of the submergence jet are analyzed, and the structure and characteristics of the submerged jet are analyzed in detail, and how the jet acts on the object is analyzed in detail. The generation mechanism and working principle of self-excited pulsed jet are expounded, according to the generation mechanism of submerged jet, the wave velocity and frequency of jet device are analyzed, and the mechanism of self-excited inspiratory pulse jet under submerged condition is analyzed preliminarily. In chapter 3, the performance of self-excited inspiratory pulse jet under different operating conditions is analyzed. Using dimensionless analysis, the optimum ratio of relative impact force under non-submerged condition and submerged condition is analyzed, and the percentage of inspiratory ratio to non-suction relative to impact force under submerged condition is analyzed. The relationship between the ratio of parameters (area ratio of upper and lower nozzles, the ratio of cavity diameter to upper nozzle diameter, the ratio of cavity length to upper nozzle diameter and the ratio of confining pressure to working pressure) and the relative inspiratory capacity is analyzed by using dimensionless method. The influence of different parameters on the range of strike is analyzed.
【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV136;TV697.31
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