pressure pulsation

For Francis turbine at home and abroad in the condition that under partial load tail pipe pressure pulsation research has become more and more widely.

国内外对混流式水轮机在部分负荷下尾水管压力脉动的研究已越来越深入。

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Carries on the analysis through the pressure pulsation signal test to its flow quality, extrapolate the different grain granule the begin wind speed and terminal velocity of fluidization.

通过压力脉动信号的测试对其流动特性进行分析，推测出不同谷物颗粒的流动化开始风速、悬浮速度。

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Research on Outlet Pressure Pulsation of Reverse Operation in Tubular Pump Model Experiment

贯流泵装置模型试验转轮出水口压力脉动研究

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Hydraulic friction welder has some disadvantages as high energy consuming, pressure pulsation, noising and heating.

液压式摩擦焊机具有能源消耗大 、 压力脉动 、 噪声、发热等缺点.

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According to the Newton's second law of motion, the law of conservation of mass, and Bingham plastic flow equation of slurry, as well as under top cement pulsation, the mathematical models of one dimensional pressure pulse propagation downwards in the cement column was established.

文中根据牛顿定律、质量守恒定律及水泥浆的宾汉塑性流变性，在顶部水泥脉冲振动作用下，建立了水泥浆中，一维压力传播的波动方程的数学模型。

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This paper analyses the flow characteristics of the variable axial piston pumps through flow pulsation resource, putting forward a method to reduce the reduction of pressure pulsation and the test result of a pump.

分析了变量轴向柱塞泵的流量特性，从该类泵流量脉动源出发，提出了减少泵压力脉动双幅值误差的方法.给出了该类泵减小压力脉动的数学模型及某泵的试验结果。

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There is a large size, heavy weight, pressure and flow pulsation problems in the conventional crank-type reciprocating pump.

传统的曲柄连杆式往复泵存在体积大、重量重、压力和流量脉动等问题。

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Compared by the analysis, optimizing the parameter of the impeller and casing tongue, on side of hydraulic design of pump, is the most effective way to reduce the pressure pulsation of pulp-pump.

分析得出：从泵的水利设计方面来优化叶轮和隔舌的参数，是降低纸浆泵压力脉动的最有效方法。

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In chapter 3, three dimensions unsteady turbulent flow numerical simulation is used for tail tube of the Three Gorges Hydropower, and frequency spectrum analysis is made for pulsation pressure, therefore frequency and corresponding amplitude of pulsation pressure is concluded.

第三章对三峡水电站尾水管进行了三维非定常湍流模拟，并对脉动压力进行频谱分析，得出脉动压力的频率成分和相应的幅值。

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Plunger pump in the steering system bring fluid pulsation, there out pressure pulsation in subsequence system.

本文分析了某船舶操舵系统噪声产生的原因及机理, 进行了降噪措施的理论研究.

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In this paper, according to the analysis of the possible pressure pulsation mechanism while working in pump& motor closed-type hydraulic system, some effective methods, which are verified by simulation and test, to limit pressure pulsation are put forward.

本文针对泵&马达闭式液压系统工作过程中可能产生的压力脉动机理进行分析，提出有针对性的抑制压力脉动的方法，通过仿真和实验予以验证。

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If the roller pulsation, the pressure on paper as cause misregister.

如果滚子径向跳不静, 则差纸的不张辛有不小有小,致使套印禁绝.

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Development of Fuel Pump Pipeline Pressure Pulsation Test Machine

燃油泵总成管路交变压力试验机的研制

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