The time step is very small for the transient analysis of nozzle jet flow, which occupied numerous computational resources.
由于冲击式水轮机三维自由射流是两相流，进行瞬态计算的时间步长必须非常小，这就需要大量的计算资源。
The algorithm and calculation results could be used to predict the infrared radiant properties of high temperature aircraft nozzle jet.
计算结果可以用于预测飞机尾喷管高温燃气射流的红外辐射特性。
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；
It is found that the star_shaped nozzle jet has a shorter initial section and slower velocity attenuation along the jet centerline in the main region than the round nozzle jet.
实验发现，星形喷嘴射流与普通圆射流相比，其射流初始段较短，但基本段内速度随喷距衰减的速率较低。
Jet nozzle is arranged at the root of the fairwater.
喷流孔布置在导流帽的根部。
In addition, plasma jet from the form into consideration, the jet from the gun in diameter is expands outward, nozzle increase in altitude inevitably lead to increased width incision.
另外，从等离子射流的形态方面考虑，射流直径在离开枪口后是向外膨胀的，喷嘴高度的增加必然引起切口宽度加大。
At the region near the nozzle exit, a vibrating flow phenomenon is found, which is associated with the expansion waves and shock waves reflections inside the gas jet.
发现了在接近喷嘴出口的区域里，出现了与射流内的激波、膨胀波有关的振荡流。
Provided that a dual-purpose nozzle capable of producing alternately such a spray and a plain water jet may be provided in substitution.
但可设置能交替地产生上述喷雾及普通水柱的两用喷嘴作替代。
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。
The jet behavior of a multi nozzle head scaled from an existing engineering was investigated experimentally in a steady unstratified receiving water body.
在没有密度分层的容泄水体条件下，对某污水排海工程多孔喷头的射流特性进行了实验研究。
The results show that NOx emission was abated when the nozzle with two circle air jet was converted into the nozzle with two rectangular air jet.
研究结果认为：在燃气喷口两侧布置两个矩形空气喷口的烧嘴，氮氧化物排放量低于圆形空气喷口烧嘴；
A new type of nozzle generating swirling-abrasive water jet has been designed and the numerical method is employed to analyze the characteristics of the jet flow in the nozzle.
设计了一种水垫式旋转磨料射流喷嘴，并对其内部流场流动特性进行了数值研究。
Recently, with the jet research and development, the non-circle jet nozzle is used widely begin to be accepted because of its advantages.
但随着研究的不断进展，异形喷嘴因为其在某些方面的突出优势已经开始得到越来越广泛的应用。
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。
As the core component of jet system, the structure parameters of nozzle affect the jet quality directly.
喷嘴作为射流系统中的核心元件，其结构参数直接影响射流质量。
Numerical analyses of the transonic nozzle inviscid flow and supersonic jet impingement on a jet TAB are presented.
采用数值分析方法分析了跨声速喷管无粘流动和超声速射流对挡流板的冲击流场。
The influence of conic Angle etc on jet flow field of conic nozzle is discussed, also, the ways to improve the property of jet flow and the shortcoming of the simple conic nozzle are pointed out.
探讨了锥角等对锥形喷嘴射流流场的影响，指出了改进锥形喷嘴射流特性的途径及简单锥形喷嘴的不足。
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。
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。
Jet nozzle insufflation technology is used for office Spaces and meeting rooms. By this way, one of the problems mentioned in workshop survey has been solved.
办公空间和会议室内采用喷嘴送风技术，这种技术解决了前面提到的空调不足的问题。
Coordination calculation for the flow in pipe, nozzle and reservoir, critical flow characteristics through the throttling jet are studied.
对管流、嘴流、渗流的协调计算及蒸汽流过节流喷嘴的临界流动特性进行了研究。
The paper Outlines the construction features, the drawing principle, the fix of the air drawing jet nozzle, and the fix methods and the maintenance of the air cavity in the nozzle.
简述了气流拉伸喷嘴的结构特点、拉伸原理、安装调整以及喷嘴气流腔的安装方法和保养。
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。
By measuring the thrust and lateral forces of solid rocket motor during firing conditions, the thrust vector control performances of jet TAB TVC and movable nozzle TVC were studied.
通过测量固体火箭发动机水下工作过程中的推力和侧向力，研究了扰流片和摆喷管两种推力矢量方式的水下推力矢量特性。
It is useful in understanding nozzle internal and external flow field and impinging jet parameter distribution. It is also helpful for optimal design of nozzle internal structure.
计算结果与实验吻合较好，所获得的喷嘴内外部流场的流动状况以及冲击射流参数分布，可用于优化喷嘴内部结构设计。
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。
The single tube respective jet grouting, enlarging nozzle diameter and specific slurry injection technology are proposed.
提出采用单管分喷工艺、增大喷嘴直径以及特殊注浆工艺等方法。
The single tube respective jet grouting, enlarging nozzle diameter and specific slurry injection technology are proposed.
提出采用单管分喷工艺、增大喷嘴直径以及特殊注浆工艺等方法。
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