Blade scale effects of tip leakage
Name
23741868.pdf
Size
2.55 MB
Format
Adobe PDF
Checksum (MD5)
8cdab372c5a43f50991282712c04b552
Author(s)
Martinez-Sanchez, Manuel
Gauthier, R. P.
Date Issued
1990
Publisher
Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1990]
Series/Report no.
GTL-202
GT & PDL report ; no. 202
Abstract
The effects of blade-tip leakage in a turbine are investigated by modeling the stage as an incomplete actuator disk. It is found that the spanwise flow redistribution due to the gap is such as to produce a uniform unloading of the blades, despite the very concentrated leakage. Partial lift retention at the blade tip is accounted for based on a leakage jet-free stream collision model which successfully predicts the roll-up of the leakage flow. The predicted efficiency loss due to the gap correlates well with experimental data.
Description
October 1990
Includes bibliographical references (leaves 43-44)
Persistent DSpace Link
