The active control effects for the rotating stall in centrifugal diffuser and the elucidation of the relation between flow structure and rotating stall

离心扩压器旋转失速的主动控制效果及流动结构与旋转失速关系的阐明

• 批准号: 10650186
• 负责人: ARIGA Ichiro
• 金额: $ 1.34万
• 依托单位: Chiba Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650186/
• 关键词: Centrifugal compressor; Vaneless diffuser; Rotating stall; Scroll; Prestall; Particle Image Velocimetry; 遠心羽根なしディフューザ; 羽根無しディフューザ; プレストール

When doing an active control for the rotating stall restraint, if the condition of the occurrence of the rotating stall (prestall), the place and the structure can be specified, it can be delayed in doing disposal to the place. The experiment was carried out in one case in which the scroll was installed in the diffuser downstream and in another case it was not installed.When the scroll was installed, the wall surface static pressure measurement ( the semiconductor pressure transducer ) near the tongue division was carried out from the prediction that the flow near the tongue division became a trigger in the rotating stall start. However, a knowledge concerning with the start of the rotating stall was not clearly obtained. The case in which there was no scroll was examined on cause of generation, structure and evolution process of rotating stall, etc. using wall surface static pressure measurement, velocity measurement ( hot-wire anemometer ) and PIV(Particle Image Velocimetry). As the result, the reverse flow developing from the diffuser exit was visualized. The flow rate of which the reverse flow was observed by PIV agreed almost with the flow rate in which it seemed to generate the rotating stall from the frequency analysis of the velocity and pressure signals and the change of standard deviation of each signal.

当对旋转摊位约束进行主动控制时，如果旋转失速的发生条件（Prestall），则可以指定位置和结构，则可以延迟将其处理到该位置。该实验是在一种情况下进行的，在一个情况下，将滚动安装在下游的扩散器中，在另一种情况下没有安装。安装滚动后，安装了滚动，壁表面静态压力测量（半导体压力传感器）是在舌头划分附近进行的，从舌附近的舌头划分中进行了舌头划分的流动，将其旋转起来。但是，尚未明确获得有关旋转失速开始的知识。没有滚动的情况，即使用壁表面静态压力测量，速度测量（热线接种仪）和PIV（粒子图像速度计）的旋转失速等原因的原因。结果，可视化了从扩散器出口发展的反向流。 PIV观察到反向流量的流量几乎与流速似乎从速度和压力信号的频率分析以及每个信号的标准偏差的变化中产生旋转失速。

项目成果

N. Hayashi, M. Koyama, I Ariga: "Study of Flow Pattern in Vaneless Diffuser of Centrifugal Compressor using PIV"10th International Symposium on Application of Laser Techniques to Fluid Mechanics. Lisbon, Portugal, July 10-13, 2000.

N. Hayashi、M. Koyama、I Ariga：“使用 PIV 的离心式压缩机无叶扩压器中的流动模式研究”第十届激光技术在流体力学中的应用国际研讨会。

N.Hayashi,M.Koyama,I.Ariga: "Study of Flow Pattern in Vaneless Diffuser of Centrifugal Compressor using PIV"10^<th> International Symposium on Application of Laser Techniques to Fluid Mechanics Lisbon,Portugal July 10-13,2000.

N.Hayashi,M.Koyama,I.Ariga：“Study of Flow Pattern in Vaneless Diffuser of Centrifugal compressor using PIV”第10次激光技术在流体力学应用国际研讨会葡萄牙里斯本2000年7月10-13日

N.Hayashi, M.Koyama, I.Ariga: "Study of Flow Pattern in Vaneless Diffuser of Centrifugal Compressor using PIV"10ィイD1thィエD1 International Symposium on Application of Laser Thechniques to FLUID Mechanics, Lisbon, Portugal. (2000)

N.Hayashi、M.Koyama、I.Ariga：“使用 PIV 进行离心式压缩机无叶扩压器流动模式的研究”10D1D1 激光技术在流体力学中的应用国际研讨会，葡萄牙里斯本（2000 年）。