MEASUREMENT AND PREDICTION OF TIP CLEARANCE FLOW IN LINEAR TURBINE CASCADES

被引：46

作者：

HEYES, FJG ^{[1
]}

HODSON, HP ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, WHITTLE LAB, DEPT ENGN, CAMBRIDGE CB3 ODY, ENGLAND

来源：

JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME | 1993年 / 115卷 / 03期

关键词：

D O I：

10.1115/1.2929264

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper describes a simple two-dimensional model for the calculation of the leakage flow over the blade tips of axial turbines. The results obtained from calculations are compared with data obtained from experimental studies of two linear turbine cascades. One of these cascades has been investigated by the authors and previously unpublished experimental data are provided for comparison with the model. In each of the test cases examined, excellent agreement is obtained between the experimental and predicted data. Although ignored in the past, the importance of pressure gradients along the blade chord is highlighted as a major factor influencing the tip leakage flow.

引用

页码：376 / 382

页数：7

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