The complex internal flow has made volute to be one of the component costing most loss.
蜗壳内部的流动现象十分复杂，是损失最大的元件之一。
The distributions of velocity, velocity moment, pressure and other flow parameters are obtained, and the properties of inner flow inside the volute are also analyzed.
得到了离心泵蜗壳内速度、速度矩、压力等参数的分布，分析了蜗壳内部流动的特征。
The results of the simulation indicate:compared with cyclone in other domain, the secondary flow of the preheating cyclone with pentagonal inlet and three core volute structure is relatively weaker.
模拟计算结果表明：与其他领域应用的旋风分离器相比，五边形入口、三心大涡壳式旋风预热器内筒入口附近次级流动相对较弱；
The results show that the performance of optimized fan is improved by lowering the energy loss which caused by the secondary flow vortex, the volute tongue, the wake-jet and the angle of attack.
研究结果表明：通过优化有效降低了因二次流漩涡、风机蜗舌结构、尾流-射流和正冲角等造成的能量损失，提高了离心通风机性能。
Centrifugal and mixed flow pumps pressurized water chamber is a common spiral-shaped, called the volute.
离心泵和混流泵常见的压水室是螺旋形的，称为涡壳。
The asymmetry of overall flow field caused by the interaction between impeller and volute is proved by different flow atlas of the specific section.
通过特定截面的不同流动图谱，证实了蜗壳、叶轮相互作用引起的整机流场的不对称性。
The volute of guide-vane structure can transform the kinetic energy to pressure energy as soon as possible, and improve the capacity of separating gas and liquid for the more balance flow in it.
压水室采用导叶式结构能够尽快地把液体的动能转换为压力能，同时能够使泵腔内的流动更趋合理均匀，提高泵内气液分离的能力，并且能平衡叶轮径向力。
The relative position between the diffusion blade and the volute tongue has influence on the distribution of diffuser flow field and the position is regulated suitably to reduce the hydraulic loss.
扩压叶片与隔舌相对位置对扩散段流场的分布有影响，适当调整可以减小水力损失。
Particles enrichment near the outside and rear side of the volute casing is caused by the centrifugal force and the flow entrainment according to the simulation prediction. This phenomena could be us…
数值模拟表明，风机本身的离心力以及蜗壳内气流的夹带作用，导致固体颗粒向风机蜗壳的外侧面、后侧面聚集，该现象可以用于改善风机出口的颗粒分离。
Particles enrichment near the outside and rear side of the volute casing is caused by the centrifugal force and the flow entrainment according to the simulation prediction. This phenomena could be us…
数值模拟表明，风机本身的离心力以及蜗壳内气流的夹带作用，导致固体颗粒向风机蜗壳的外侧面、后侧面聚集，该现象可以用于改善风机出口的颗粒分离。
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