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characteristics of cavitation
相关语句
  空化特性
     Analysis on the Characteristics of Cavitation Downstream of the Reversion Curve of a Spillway Tunnel
     泄洪洞反弧段下游空化特性分析
短句来源
     and the characteristics of cavitation of the front of the aeration-baffle when air is completely aerated from the back of the aeration-baffle.
     墩头壁压脉动压强特性以及探讨了柘林掺气分流墩 (墩头的θ =75°)的安全使用范围 ; 在墩后充分供气时 ,墩头的空化特性 .
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  “characteristics of cavitation”译为未确定词的双语例句
     The Characteristics of Cavitation and Fluctuation for Multi-Orifices
     多级孔板空化与脉动壁压特性
短句来源
     THE CHARACTERISTICS OF CAVITATION EROSION FOR HYDRAULIC JET PUMP
     水力喷射泵的气蚀特性
短句来源
     In this paper, the characteristics of cavitation vibration signal from the centrifugal pump is analyzed by fast Fourier transform(FFT), wavelet decomposition and wavelet package decomposition. And the difference between the vibration signal under normal working state and in cavitation state is found out: under normal working state, the vibration in the high frequency domain is very weak, while it is notably strengthened when the cavitation is initially developed in the pump.
     本文首先从研究汽蚀振动信号自身的特点出发,结合FFT变换、小波分解和小波包分解对离心泵汽蚀振动信号的局部和整体同时进行分析,找出了汽蚀初始阶段离心泵振动信号明显有别于正常工作信号的特征:正常工作时,振动信号在高频区域的振动表现得很微弱,而汽蚀发生初始阶段,高频区域的振动显著增强。
短句来源
     This paper introduced the principle and characteristics of cavitation airfloat. The cavitation airfloat process was used to treat waste water in Refinery of Yangzi Petrochemical Co. , Ltd. The results showed that oil removal efficiency of waste water could reach 88.2%, oil content in outlet was 17.7 mg/L and satisfied water quality index.
     阐述了涡凹气浮的原理及特点,并结合扬子石化炼油厂污水处理场改造的工程实例,采用涡凹气浮法处理污水,可以使污水的含油去除率达到88.2%,出水含油量为17.7 mg/L,满足出水水质指标。
短句来源
     According to the major flowing feature of liquid phase and cavity phase in calculation result,the distribution of static pressure on blade was analyzed in the process of cavitation and the internal characteristics of cavitation and two-phase flow in impeller was revealed.
     根据计算结果的液相和空泡相主要流动特征,分析汽蚀发生过程叶片上的静压分布,揭示叶轮内汽蚀两相流场的内在特性。
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     The characteristics of G.
     论文首先对语音编码的各种方案进行了比较,并对G.
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     And the characteristics of the G.
     通过仿真和实验,也验证了G.
短句来源
     characteristics;
     三、发展的特点;
短句来源
     The Characteristics of Cavitation and Fluctuation for Multi-Orifices
     多级孔板空化与脉动壁压特性
短句来源
     Energy Dissipation of Rotational Flow and Its Cavitation Characteristics
     旋转水流消能及其空化特性
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  characteristics of cavitation
The characteristics of cavitation in superplastic metals and ceramics
      


Extensive tests by the author have proved that the scaly pitting of hydraulic machine parts is one characteristic of cavitation in sandy water, in stead of the characteristic of wearing due to sand in the water, and that the wearing characteristic of simple wear because of sand in water is that the more the surface is washed the smoother it will be and the wearing process is rather slow. Therefore, the removal or reduction in cavitation is the most effective measure we should take to...

Extensive tests by the author have proved that the scaly pitting of hydraulic machine parts is one characteristic of cavitation in sandy water, in stead of the characteristic of wearing due to sand in the water, and that the wearing characteristic of simple wear because of sand in water is that the more the surface is washed the smoother it will be and the wearing process is rather slow. Therefore, the removal or reduction in cavitation is the most effective measure we should take to deal with the kind of case. The author has found out a law of cavitation and wear in sandy water According to the law, the author has made it obtain satisfactory solution about the problem of rapid scaly pitting of water turbine in Liulangdong and hydraulic power and other stations

作者通过大量试验证明了水力机械中鱼鳞状表面破坏不是泥砂磨损的特征,而是含砂水中汽蚀破坏的一种特征,证明了单纯泥砂磨损是越冲磨越光滑,而且是较为缓慢的。因此得出了消灭或减轻汽蚀是对待这类问题的首要措施,还结合国外的研究,总结出了含砂水中汽蚀和磨损的规律。按照这种规律已使得六郎洞等水电站水轮机快速破坏问题得到了较为满意的结果。

In co-ordination with the Xiao Langdi and Bikou tunnel with four orifices and two orifices respectively, the characteristics of cavitation and fluctuation for multi-orifices are investigated. The relationship between cavitation number incipient cavitation number and orifice shape is examined in detail. It is founded that with the increasing of diameter radio (β), the energy dissipation coefficient and the cavitation potential decrease. In the cases of cavitation and non cavitation,...

In co-ordination with the Xiao Langdi and Bikou tunnel with four orifices and two orifices respectively, the characteristics of cavitation and fluctuation for multi-orifices are investigated. The relationship between cavitation number incipient cavitation number and orifice shape is examined in detail. It is founded that with the increasing of diameter radio (β), the energy dissipation coefficient and the cavitation potential decrease. In the cases of cavitation and non cavitation, the distribution of the fluctuating pressure and its relation with diameter radio are discussed. Some of the results of this paper are adopted in engineering.

本文结合小浪底四级孔板泄洪洞和碧口二级孔板泄洪洞,研究了多级孔板的空化与脉动特性,对多级孔板的水流空化数和初生空化数随孔径比的变化关系进行了详细地探讨。得到了随着孔径比的增加,孔板的消能率降低而孔板抗空化能力提高的结论。同时,对多级孔板空化前后的脉动荷载分布、脉动压力随孔径比的变化关系进行了讨论,某些成果已被工程设计单位采用。

In this paper some of the experimental research on cavitation noise at NPU water tunnel will be described. The paper presents the basic characteristic of cavitation noise. Based on these conclusions the similarity, maximum and control of cavitation noise are discussed.

本文是一项空化噪声实验研究的总结报告。文中描述了空化噪声的基本特性,并在空化噪声的相似、空化噪声的极值和空化噪声的控制等方面提供了有意义的实验结果。

 
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