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动力真空
相关语句
  dynamic vacuum
     Generally, the value of vacuum in draft tube is composed of three parts, namely dynamic vacuum, static vacuum and negative water hammer pressure.
     尾水管真空度一般由动力真空、静力真空以及尾水管进口负水击压力三部分叠加而成。
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  相似匹配句对
     Dynamic characteristics on vacuum adsorption crimping
     真空吸附起卷的动力特性
短句来源
     Vacuum Technology and Equipment in Power Battery Production
     真空技术及设备在动力电池制造中的应用
短句来源
     the vacuum operates;
     真空运转;
短句来源
     the power;
     动力论;
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     concentrated in vacuum;
     真空浓缩 ;
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  dynamic vacuum
All samples are produced from a lead selenide batch heat treated under dynamic vacuum.
      
The powders are produced from a lead selenide batch heat treated under dynamic vacuum and ground in an agate mortar.
      
All samples are produced from a lead selenide batch heat treated under dynamic vacuum.
      
In dynamic vacuum (p = 1.33 Pa) at 780-800°C, Bi2O3 consecutively transforms to a phase with the cubic γ-Bi2O3 structure and tetragonal Bi2O2.3-2.4.
      
Na2H3IO6 decomposes with water and oxygen evolution in the range of 180-250°C under the atmospheric pressure or in a dynamic vacuum.
      
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A pressure correction numerical method for three-dimensional incompressible turbulent flow problems of complex geometry has been developed. The present algorithm is based on the finite volume solution in body-fitted coordinates of the Reynolds averaged Navier-Stokes equations closed with the two-equation turbulence model. The simulation method has been applied to a 90° strongly curved square duct and an elbow hydraulic turbine draft tube. The calculated results show an acceptable agreement with the measurements....

A pressure correction numerical method for three-dimensional incompressible turbulent flow problems of complex geometry has been developed. The present algorithm is based on the finite volume solution in body-fitted coordinates of the Reynolds averaged Navier-Stokes equations closed with the two-equation turbulence model. The simulation method has been applied to a 90° strongly curved square duct and an elbow hydraulic turbine draft tube. The calculated results show an acceptable agreement with the measurements.

水轮机弯肘型尾水管内湍流数值计算朱斌(中国科学院工程热物理研究所北京100080)林汝长(清华大学水电系北京100084)关键词压力修正法,不可压缩,湍流1前言尾水管是水轮机过流部件之一,其主要作用是将转轮出口的水流动能转化为转轮出口处的附加动力真空...

Generally, the value of vacuum in draft tube is composed of three parts, namely dynamic vacuum, static vacuum and negative water hammer pressure. This paper mainly discussed the influences upon vacuum caused by the wicket-closing laws and the style or dimension of lower surge chamber. Finally, a calculation example about a practical project verified the conclusions.

尾水管真空度一般由动力真空、静力真空以及尾水管进口负水击压力三部分叠加而成。着重探讨了不同导叶关闭规律和尾水调压室的不同型式、尺寸对尾水管真空度的影响,并以国内某大型水电站的计算实例作为参考验证。

 
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