Flow Visualisation in a Rotating Cavity With Axial Throughflow
Flow Visualisation in a Rotating Cavity With Axial Throughflow
复制标题
具有轴向流通的旋转腔中的流动可视化
DOI：
10.1115/2000-gt-0280
复制
发表时间：
2000
影响因子：
5.8
通讯作者：
C. Burkhardt
中科院分区：
文献类型：
--
作者：
D. Bohn;Gregor N. Deutsch;B. Simon;C. Burkhardt
涡轮机转子轴内部存在环形腔，冷却空气轴向或径向流过。为了提高效率和系统可靠性，必须研究这些腔体中的流动和传热现象，以最大限度地减少热负荷。出于研究目的，建立了一个实验装置。本文重点关注在冷却空气轴向流过的加热旋转腔中使用激光光片技术进行流动可视化。通过旋转遥测摄像机观察流动现象，该摄像机显示烟雾流过位于轴向中平面的光片区域。描述了可视化过程并指出了第一个结果。此外，还显示了跨壁传热测量。版权所有 © 2000 ASME
Annular cavities are found inside rotor shafts of turbomachines with an axial or radial throughflow of cooling air. In order to increase efficiency and system reliability, flow and heat transfer phenomena in those cavities have to be investigated in order to minimize thermal load. For research purposes an experimental rig is set up.This paper focuses on flow visualisation using a laser light sheet technique in a heated rotating cavity which is axially flown through by cooling air. Flow phenomena are observed by a rotating telemetric video camera which shows smoke flowing through the light sheet area located in the axial midplane. The visualisation procedure is described and the first results are pointed out. Additionally, heat transfer measurement across the wall is shown.Copyright © 2000 by ASME