叶轮

The time-marching method and explicit finite volume difference scheme are employed to solve the flow inside the turbo-machinery.

教授的粘性体积力法来模拟粘性对叶轮机械内部流动的影响，采用时间推进法和有限体积差分格式对叶轮机械内部的流动进行求解。

In the third chapter, the optimized models, the optimizing and the evaluating system of impeller are studied.

第三章研究了叶轮的优化模型，对叶轮的优化和评价体系进行了研究。

It is also wanted to know stress distributing and magnitude of impeller under working condition.

总结了叶轮最佳超速转速的确定方法，以确定经有限元分析的实际叶轮的最佳超速转速。

At this point the impeller wheel and the water loop to form a crescent-shaped space between, and this space has been divided into the impeller and leaves an equal number of a number of small cavities.

此时叶轮轮毂与水环之间形成一个月牙形空间，而这一空间又被叶轮分成和叶片数目相等的若干个小腔。

Centrifugal energy saving analysis and measures: 1 improve the efficiency of centrifugal pumps a first step, in the selection of comparison, when many suppliers Selection program, in considering the cost-effective choice as far as possible under the premise of efficient programs; the second step , accredited professionals must Mill producers, affecting the pump efficiency of the key components such as impellers, pump body, pump cover, diversion devices, such as the manufacture of quality producers, especially for the airfoil impeller , outlet angle, leaves the sub-degrees, the shape of flow channel, to control the quality of finish, etc., so that products are delivered in the current production under the conditions of highly efficient products; the third step, the scene in the production of installation and debugging process, pump to ensure a solid foundation, with the driving machine for good, before and after valve flexible piping layout design is reasonable, on-site control is feasible and safe, the complete and accurate monitoring instrumentation to ensure that pump operation can carry out real-time monitoring; fourth step , are at long-term operation of water pumps necessary to pay attention to the equipment inspection and found anomalies reflect real-time reporting, in the normal minor repairs, overhaul cycle, to deal with the replacement of wearing parts inspection to ensure the pump's long-term safe and efficient operation.

第一步，在选型时多比较各供应商的选型方案，在考虑性价比的前提下尽量选用效率高的方案；第二步，派驻一定的专业人员驻厂监制，对影响水泵效率的关键零部件如叶轮、泵体、泵盖、导流器等的制造质量进行监制，尤其对叶轮的翼形、出水角、叶片的分度、流道的形状、光洁度等质量进行控制，使交付的产品是在当前的生产条件下的高效率的产品；第三步，在生产现场的安装调试过程中，要保证泵的基础牢靠，与驱动机对中良好，前后阀门开关灵活，管道布置设计合理，现场控制安全可行，各运行监控仪表齐全准确，保证泵的运行过程能够进行实时监控；第四步，是在水泵的长期运行中要注意对设备的点检，发现异常情况即时反映汇报，在正常的小修、大修周期中，应对各易损件进行检查更换，保证泵的长期高效安全的运行。

Desige Parameter and test date of the remoulded cylineer shaped screw impeller used by inducer was introduced, which fully reached positive and negative rotation performance and accorded with conversion law.

介绍了用诱导轮改造后的圆柱形螺旋叶轮的设计参数和试验数据，改造后的叶轮不仅能达到正、反转性能要求，而且基本符合相似换算定律。

The heat transmission from blade to rim is being simplified on the analogy of heat transmission in ribs.

把汽轮机叶片对叶轮的传热简化为肋片传热，使用肋片传热模型计算汽轮机叶片流道的等效传热系数，采用圆筒壁模型计算汽轮机叶轮轮缘的总传热系数，并给出了应用实例。

Impeller overspeed craft is compressor impeller produces a medium kind of important method.

梗概： 叶轮超速工艺是压气机叶轮制造中的一种重要方法。

The inner flow field of modified Perspex impeller of a centrifugal pump was measured by advanced PIV system, and the absolute speed vectorgraph and original data of the axial eddy were acquired.

采用先进的粒子图像测速系统对普通叶轮改型设计后的有机玻璃叶轮内部流场进行无接触测量，获得轴向旋涡流绝对速度矢量图及原始数据。

Recently, many experiments have shown that the assumption of constant interblade phase angle may not be correct.

如何预测叶轮机械的失速颤振一直是工程界所关注的课题，预测的主要工具是叶轮机械气动弹性力学。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。