In order to analyze the flow characteristics of supercharger impeller vaneless diffuser and volute single channel model and entire machine model are built for simulation .

为分析增压器叶轮、 无 叶扩压器和蜗壳内的流动特性，分别建立了单通道模型和整机模型。

The Velocity Distribution Even Coefficient of Vaneless Nozzle Exit and the Volute Coefficient for a VGT

变截面涡轮（VGT） 无 叶喷嘴出口气流速度均匀系数及蜗壳系数

These diffusers include vaneless diffuser vaned diffuser low solidity diffuser and half-guide-vanes diffuser .

采用的扩压器包括 无 叶扩压器、叶片扩压器、低稠度扩压器和半高导叶扩压器。

Effect of flow parameters and its geometry parameters at inlet of vaneless diffuser on its performance is investigated in this paper .

本文研究了 无 叶扩压器的进口流动参数及其几何参数对 无 叶扩压器性能的影响。

A detailed unsteady numerical simulation has been carried out to investigate the influence of the rotor tip clearance on the performance of a 1 + 1 / 2 counter-rotating turbine ( vaneless counter-rotating turbine ( VCRT )) .

本文对1+1／2对转 涡轮中动 叶顶部间隙大小对涡轮性能的影响进行了详细的数值模拟。

N this paper a test rig is set up for experiment investigation to axial double flow vaneless nozzle and three different profiles of inner-ring are designed for it .

建立了双出口、内环旋转式轴流 无 叶喷嘴实验装置，其中采用了三种不同型线和不同高度的内环。

Design and test of a supersonic cascade used for the vaneless counter-rotating turbine

1+1/2对转涡轮用出口超音叶栅设计与试验

Hot wire measurement of flow field in vaneless diffuser

无 叶扩压器内流场的热线测量

An experimental investigation of rotating stall in a centrifugal compressor with vaneless diffuser

离心压气机 无 叶扩压器旋转失速实验研究

PIV Measurement of Flow Field within Vaneless Diffuser of Centrifugal Compressor

离心压缩机 无 叶扩压器内部流场的PIV试验测量

Experimental Measurements and Numerical Simulations of the Internal Flow Field in Vaneless Diffuser of a Centrifugal Compressor

离心压气机 无 叶扩压器内部流动的实验测量和数值分析 超音速 风洞扩压器 激波 串 现象的数值模拟

A method is proposed to calculated the incompressible three-dimensional turbulent boundary layer on both wall surfaces of vaneless diffusers .

提出了一种计算 无 叶扩压器两壁面上不可压缩三元紊流附面层的方法。

Experimental study of flow field within vaneless diffuser with different inlet conditions

无 叶扩压器不同进口条件时流场的实验研究

An investigation on aerodynamic performance of a vaneless counter-rotating turbine with recessed high-pressure rotor tips blade for gas turbines ( excl. turbopropellers )

无 导 叶对转涡轮高压动叶叶尖开槽的研究叶片，用于燃气轮机（不包括涡轮螺旋桨发动机）

Flow Analysis within Vaneless Cavity and Concavity Calculation of Vane Exit Edge for Slurry

渣浆泵叶片出口边 无 叶空间内流动分析与 凹度计算

Finally the calculated results of entire machine model are used to analyze the velocity and pressure in the vaneless diffuser . The flow in the volute is also analyzed and the tongue of volute has a large effect on the performance of flow .

最后，根据整机模型计算的结果分析了 无 叶扩压器内的速度、静压变化规律；同时分析了蜗壳内的流动情况，指出了蜗舌对流动性能的影响。

Using intelligent hot line anemometer single & monoclinal wire omnidirectional rotating sampling technique measurement should be carried out to the internal flow field of centrifugal compressor vaneless diffuser under the seven kinds of width .

利用智能型热线风速仪，采用单直丝和单斜丝联合多方位旋转采样技术1w_1411，在7种宽度下对离心压缩机 无 叶扩压器内部流场进行了测量。

A calculation method of the off-design of variable cross section in pulse turbine with vaneless volute is introduced in the paper .

介绍了变截面 无 叶蜗壳脉冲涡轮的变工况计算方法。

Investigation about effects of axial gap on the performance of Vaneless counter-rotating turbine

1+1/2对转涡轮 叶 排轴向间距对性能影响的研究

In order to reveal the unsteady flow characteristics on a Vaneless Counter-Rotating Turbine ( VCRT ) a three-dimensional viscous unsteady CFD analysis was performed .

为了揭示1+1／2（ 无 低压 导 叶）对转涡轮流场的非定常流动特性，运用 全三维粘性流场计算程序对某 1+1 ／2对转涡轮 模型级的流场进行了非定常数值模拟。

Jet-Wake Type Disturbance Analysis in Vaneless Diffuser

无 叶扩压器内的射流-尾迹型扰动分析

During the simulations with / without volute it is found that the flow fields in the vaneless space and vaneless diffuser are distinctly influenced by the flow separation in the rotor flow passages .

在全 流道和全场数值计算中都发现，叶轮流道内的流动分离明显地影响了 无 叶空间及无叶扩压器内的流动。

Numerical Simulation on Flow Field of Vaned Diffuser and Vaneless Diffuser in Single-Stage Centrifugal Fan

单级离心通风机内有叶扩压器与 无 叶扩压器流场数值模拟

The effect of the meridianal exit incidence of axial-flow vaneless nozzles on turbine performance

轴流 无 叶喷嘴出口子午倾角对级特性的影响

Then the mechanism for rotating stall occuring in vaneless diffusers and surge in centrifugal compressors is discussed .

在此基础上，讨论了在 某些条件下离心式压缩机 无 叶扩压器内发生的旋转失速现象及由此导致的离心式压缩机的喘振机理。

Primary analysis and design of a vaneless counter-rotating turbine

关于 1+1/2对转涡轮的基本分析和初步设计

There are the obvious low velocity flow regions in the vaneless diffuser during stall period . As the flow rate decreasing there is the radial reverse flow region at the inlet near the diffuser shroud .

全流道 数值 计算 显示在失速周期中随着质量流量的减小， 无 叶扩压器内出现了明显的低速区，只在靠近 无 叶扩压器前盖板进口处出现了径向逆流区。

Test Research on Cutting The Width of Vaneless Diffuser Cap to The Effect of Its Internal Flow Field

切割 无 叶扩压器盖 侧宽度对其内流场影响的试验研究

A New Thermodynamic Calculation Method of Vaneless Diffuser in Centrifugal Compressor

离心式压气机 无 叶扩压器热力计算新方法

Effects of radial location of inlet hot streak on temperature distribution in low pressure stage of a vaneless counter-rotating turbine

进口热斑径向作用位置对 无 导 叶对转 涡轮低压级温度场的影响 压缩器 进口 叶片 组件