To explain the generative mechanism of low pressure and mass flow self-excited oscillation pulsed jet, the nozzle optimized design range of structure and operation parameters was investigated.
为了揭示低压大流量下自激振荡脉冲射流清洗的脉冲发生机理，研究了这种工况下喷嘴结构和运行参数的优化设计范围。
By theoretical calculation and analysis, the necessary liquid pressure and jet nozzle specification are determined.
通过理论计算和分析确定所需压力和喷嘴大小。
The quality of is directly influenced by the performance of air-jet loom nozzle, so it is necessary to measure the pressure of air field which is formed by the nozzle.
喷气织机主辅喷嘴性能的好坏直接影响到织机气流引纬的质量，因此了解喷嘴气流场的压力情况十分必要。
This paper puts forward such methods as increasing yarn twist, optimizing sizing technology, reducing whiff pressure, and enlarging the chief jet nozzle and the angle of yarn stop pin, etc.
针对弹力竹节织物织造过程中的技术难点，提出了增加纱线捻度、合理上浆工艺、减小喷气压力、增大主喷嘴和止纱销的角度等技术措施。
The optimum jet distance for jet pressure pulsation was about 7-14 times of nozzle exit diameter.
实验还表明，自激振荡脉冲喷嘴射流存在最优喷距，最优喷距的大小为喷嘴出口直径的7～14倍。
The paper focuses on the basic configuration and the types of rotating nozzle in high pressure water-jet cleaning technology.
论述该清洗技术中旋转喷头基本形式和类型，并对其相对于普通喷头的清洗性能做比较分析。
Calculations showed that: with the guide vanes, the high-pressure water would have tangential velocity after it went through the nozzle and form more obvious swirling jet.
计算结果表明：使用导流叶片后，高压水通过喷嘴后具有了切向速度，并形成了较为明显的旋转射流。
This paper focuses on the effect of polymer additives and nozzle shapes on the properties of high-pressure water jet. A method is presented to analyse the fluid flow within the nozzles.
本文研究了喷嘴形状和高聚物添加剂对高压水射流性能的影响，给出了一种分析喷嘴内流体流动的方法。
Shape selection and dimension optimization of direct jet high pressure spray nozzle were done.
对直射式雾化喷嘴进行选型及内部尺寸寻优。
In this paper, the effects of nozzle shape on the properties of high pressure water jet discharging in air are investigated from theory and experiments.
本文从实验和理论两方面研究了喷嘴结构对高压水射流性能的影响。
In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance.
为探索冲击射流离散频率噪声的产生机理，系统地研究了冲击射流离散频率噪声的特性。
The theory method of designing the diameter of jet nozzle and the water pressure are advanced in the light of the endurance limit stress on the dirt.
提出了根据不同污垢的耐压强度极限应力，设计喷咀直径及射流压力的理论方法。
Compared with the single-nozzle jet aerator, the variations of the entrainment ratio and efficiency with pressure ratio for quad-nozzle jet aerator are remarkable.
相对于单喷嘴射流器，四喷嘴射流器的流量比和效率随压力比的变化显著；
The wear test was carried on a nozzle which was made from carbides and ceramics on high pressure abrasive water-jet machine.
本文采用硬质合金和陶瓷材料制成喷嘴。在高压水设备上进行了磨损实验研究。
The wear test was carried on a nozzle which was made from carbides and ceramics on high pressure abrasive water-jet machine.
本文采用硬质合金和陶瓷材料制成喷嘴。在高压水设备上进行了磨损实验研究。
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