查询词典 cavitation

There are few research reports about cavitation of the annular type jet pump.

但是关于环形射流泵的空化和空蚀问题的研究报告非常少。

The velocity of the cavitation bub...

靠近界面的区域内，混合液流的流速和主流区域的流速大小基本相同，而在邻近翼型表面的区域内，具有较大的速度梯度。

Then, the method to estimate cavitation erosion characteristic of high pressure piston plunger pump by analyzing impingement angle on outlet of throttling groove is put forward. That is, to hold the impingement angle range of 30°～60°as appraisal criterion of cavitation erosion characteristic on high pressure hydraulic plunger pump.4 The throttling characteristic of hydraulic control valve is studied by CFD calculation and experiment.

最后，提出了一个通过分析节流槽出口处的射流方向来评价高压轴向柱塞空蚀特性的空蚀评价方法，即将节流槽出口的射流角范围30°～60°作为评价高压轴向柱塞泵空蚀特性的标准。4对液压控制阀的节流特性进行了CFD数值计算和试验研究。

At last, according to the effect of orifice configuration on the cavitation, the several poppet configurations of a relief valve were designed in order to suppress cavitation, the cavitating flow simulation for different configuration were performed and compared in ordet to find a optimal conriguration.

最后，针对阀口形状对气穴的影响，为了抑制阀口气穴，对溢流阀阀芯形状进行了改进，设计了几种不同的阀芯结构，分别对不同的阀芯进行了气穴流场分析和比较，来寻求优化的阀芯结构。

According to the effect of orifice configuration on the cavitation, the several poppet configurations of a relief valve were designed in order to suppress cavitation, the cavitating flow simulation for different configuration were performed and compared in order to find an optimal configuration.

在此基础上，对纯水溢流阀的整体结构进行了初步设计。

It is shown that the modified model can predict successfully the characteristics of cavitation and the detailed process of the cavitation shedding. Values of n in the modified coefficient are found to have a strong influence on the cavity length, the vapor volume, the lift and drag force, but no significant effect on the frequency distribution of the dynamics around the foil is observed.

通过与实验结果的对比表明，修正后的模型可以更准确地捕捉云状空化区域的空穴形态和空泡脱落的非定常细节；密度函数中指数n的选取对计算所得的空穴长度和升阻力均有影响，然而对流场动力特性的主要频谱分布影响不明显。

The simulated distribution of the volume fraction of vapor phase under different outlet pressure and the variation of the cavitation flow ratio indicate that the intensity of cavitation is varied with the outlet pressure of the jet pump when driving pressure and suction pressure are fixed.

模拟所得到的不同出口压力下的气相体积分数分布以及汽蚀流量比的变化表明：当射流泵工作压力与吸入压力固定时，射流泵出口压力越低，汽蚀流量比越小，同时流量比越接近汽蚀流量比，空化也越严重。

Some defects in similarity-law of cavitation model test in vacuum tank were pointed out,and it is necessary to standardize the zero-tensile-strength of liquid for cavitation inception tests effectively.

指出了在压箱空化试验中使用的相似律存在的缺陷。为了有效研究初生空化比尺效应，规范液体的抗拉强度为零是必要的。

With the analysis on liquid cavitation, the use of throttle orifice is suggested to lower the pressure in steam~water piping of power plants so as to prevent liquid cavitation.

通过对液体汽蚀现象的分析，提出了采用节流孔板来降低发电厂汽水管道压力，从而防止流体产生汽蚀的方法。

So that the channel immediately exit valve seat to prevent the rapid expansion of body wall and the wall suffered cavitation damage, and for Water in the needle valve, the expansion chamber diameter of 1.5 times the diameter of including pull back the export channel, including length of 8 times the diameter when subjected to cavitation can be avoided.

使紧接阀座出口端的通道急剧扩大可防止阀体壁和管壁遭受气蚀损坏，对用于水厂中的针形阀，其扩大腔室的直径为管径的1.5倍，包括出口退拔在内的通道长度为管径的8倍时，可避免遭受气蚀。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷