The experiments of an oil film visualization technique are accomplished on the surfaces of impeller inlet segment and partial meet face between inlet segment and volute casing .

对 螺旋 离心 泵叶轮、进水节和进水节与 蜗壳 交界 处的部分端面做了表面油膜、 油点试验。

Optimum Design for Volute Casing and Base Ring of Large Hydraulic Turbines

大型水轮机 蜗壳、座环结构优化设计

Firstly pressure fluctuations have been studied in the different section of the volute . With the increasing of flow rate the scopes of pressure fluctuation become smaller in the casing flow passage .

首次分析了 非 设计 工况下 蜗壳不同截面处压力脉动 分布，随着流量的增大 螺旋段的脉动幅度减小。

Flow field of centrifugal pump ( Pump flow passage includes suction pipe impeller and volute casing . ) was obtained by solving the Reynolds average Navier-Stokes equation .

通过求解包括进水管、 叶轮、泵体等过流部件在内的水泵流道内的 三维稳定雷诺平均Navier-Stokes方程，获得水泵内部的流场分布特征。

A Higher Order Sound Modal Analysis of the Volute Casing of a Centrifugal Fan with a Sound-Soft Boundary

声软边界离心风机 蜗壳高阶声学模态分析

Based on four kinds of elements the contact node pairs are established and the finite element analysis of the clearance and contact among the volute casing vaned intake ring and cement foundation is carried out with the step loading method .

本文在采用板壳元、块 体元、边界元、伪单元和建立接触点对的基础上，利用分步加载法对 蜗壳、座环与水泥基础间的间隙和接触问题进行了有限元分析计算。

Contact among Volute Casing Vaned Intake Ring of Large Hydraulic Turbines and the Cement Foundation

大型水轮机 蜗壳座环与水泥基础间的接触问题

DESIGN AND EXPERIMENT OF HIGH SPECIFIC SPEED VOLUTE MIXED FLOW PUMP Measurement of Hydraulic Losses in Volute Casing of a Reversible Pump-Turbine under Pumping Mode

高比转数蜗壳式混流泵的设计与研究混流可逆式水泵-水轮机泵工况 蜗壳损失试验研究