Three-Dimensional Separation in Complex Internal Flow Fields

复杂内部流场的三维分离

• 批准号: 10305017
• 负责人: INOUE Masahiro
• 金额: $ 23.42万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10305017/
• 关键词: Complex Flow; Internal Flow; Three-Dimensional Separation; Centrifugal Force; Coriolis Force; Turbomachinery; Rotating Stall; コリオリカ; 限界流線; 限界渦線; 特異点

Evolution and structure of rotating stall cells in an axial compressor rotor have been investigated. To capture the flow field phase-locked to both of the rotor and the stall cell, a double phase-locked averaging technique has been developed. Time-dependent ensemble averages of three-dimensional velocity components upstream and downstream of the rotor have been obtained with a slanted hot-wire, and pressure distributions on the casing wall with high response pressure transducers.The short length-scale stall cell is characterized by a concentrated vortex spanning from the casing wall ahead of the rotor to the blade suction surface. In the long length-scale stall cell, the separation vortices go upstream irregularly when blade separation develops in the front half of the cell, and reenter the rotor on the hub side in the rear half of it. Behavior of casing wall pressure disturbances corresponding to the short and long length-scale stall cells is different depending on the stator-rotor gap. For the large and middle gap, the stall inception is detected by a spiky short length-scale disturbance, and the number of spiky waves increases to generate the high frequency waves. They becomes the short length-scale part-span stall cells at the mild stall for the large gap, while they turn into a big stall cell with growth or a long length-scale disturbance for the middle gap. In the latter case, therefore, the stalling process was identified with 'high frequency stall inception'. For the small stator-rotor gap, the stalling process is identified with 'long wave-length stall inception', and supported the recent computational model for the short wave-length stall inception by showing that closing the rotor-stator gaps suppressed the growth of short length-scale disturbances. It is found that the short length-scale disturbance results from a separation vortex from a blade surface to reduce circulation.

已经研究了轴向压缩机转子中旋转失速细胞的进化和结构。为了捕获转子和失速电池的流场相锁定，已经开发了双相锁定的平均技术。在转子上游和下游的三维速度成分的时代合奏平均是用倾斜的热线获得的，并且在套管壁上具有高响应压力传感器的套管壁上的压力分布。短长度尺度停滞电池的表征是从旋转器表面上的caster cotter the the coutter the Blade SueTure to Blade SueTure的浓缩涡流表征。在长度尺度的失速单元中，当刀片分离在细胞的前半部分发展时，分离涡流不规则地上游，然后将其后半部轮毂侧的转子重新进入。围墙压力干扰对应于短和长度尺度失速细胞的行为取决于定子旋转间隙。对于大和中间缝隙，摊位的插座是通过尖峰的短尺度干扰检测到的，尖峰波的数量增加以产生高频波。它们成为在温和摊位处的短长度零件杆型单元，以占据较大的间隙，而它们变成了一个具有生长或长度尺度干扰的大摊位。因此，在后一种情况下，停止过程以“高频失速构成”确定。对于较小的定子旋转缝隙，通过“长波长档化”来识别失速工艺，并通过表明闭合转子定位器抑制了短长度尺度干扰的生长，从而支持了短波长档构成的最新计算模型。发现短长度的干扰是由与刀片表面的分离涡流引起的，以减少循环。

项目成果

Masahiro INOUE et al.: "Development od Multiple Cells with Short Length-Scale Stall in an Axial Compressor Rotor"Transactions of JSME, Series B. Vol.65, No. 640. 4021-4026 (1999)

Masahiro INOUE 等人：“轴向压缩机转子中具有短长度尺度失速的多个单元的开发”JSME 交易，系列 B.第 65 卷，第 640 期。4021-4026 (1999)

井上雅弘: "軸流圧縮機における小スケール多重旋回失速セルの伝播のメカニズム"日本機械学会論文集,B編. 66-643. 804-809 (2000)

Masahiro Inoue：“轴流式压缩机中小型多旋转失速单元的传播机制”，日本机械工程师学会会刊，B 版 66-643（2000 年）。

Masahiro INOUE et al.: "Visualization of Multiple Stall Cells propagating in an Axial Compressor Rotor"Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference. (1999)

Masahiro INOUE 等人：“轴向压缩机转子中传播的多个失速单元的可视化”第三届 ASME/JSME 联合流体工程会议论文集。

Masahiro INOUE et al.: "Propagation of Multiple Short Length-Scale Stall Cells in an AxialCompressor Rotor"Transactions of ASME, Journal of Turbomachinery. 122-1. 45-54 (2000)

Masahiro INOUE 等人：“轴向压缩机转子中多个短长度尺度失速单元的传播”ASME 汇刊，涡轮机械杂志。

Masahiro INOUE: "Measurements of Rotating Stall Cells in an Axial Compressor Rotor by Means of Double Phase-Locked Averaging Technique"Proc.of the 7th Asian Intern.Conf.on Fluid Machinery. 97-106 (2000)

Masahiro INOUE：“通过双锁相平均技术测量轴流式压缩机转子中的旋转失速单元”第七届亚洲流体机械国际会议论文集。