Investigation of a Tip Clearance Cascade in a Water Analogy RigSource: Journal of Engineering for Gas Turbines and Power:;1986:;volume( 108 ):;issue: 001::page 38Author:J. A. H. Graham
DOI: 10.1115/1.3239883Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The tip clearance flow region of high-pressure axial turbine blades for small gas turbine engines has been investigated in a water flow cascade. The blade model features variable clearance and variable endwall speeds. The cascade is scaled for Reynolds number and sized to give velocities suitable for visualization. Pressure profiles were measured on one blade, and correlated with the visualization. Unloading is found to be a major feature of the pressure field at both tip and midspan, and is intimately connected with scraping effects and the behavior of the clearance vortex. Some initial hot-film velocity measurements are also presented.
keyword(s): Cascades (Fluid dynamics) , Clearances (Engineering) , Water , Visualization , Blades , Pressure , Flow (Dynamics) , Reynolds number , Turbine blades , Gas turbines , High pressure (Physics) , Velocity measurement AND Vortices ,
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contributor author | J. A. H. Graham | |
date accessioned | 2017-05-08T23:22:31Z | |
date available | 2017-05-08T23:22:31Z | |
date copyright | January, 1986 | |
date issued | 1986 | |
identifier issn | 1528-8919 | |
identifier other | JETPEZ-26630#38_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/101157 | |
description abstract | The tip clearance flow region of high-pressure axial turbine blades for small gas turbine engines has been investigated in a water flow cascade. The blade model features variable clearance and variable endwall speeds. The cascade is scaled for Reynolds number and sized to give velocities suitable for visualization. Pressure profiles were measured on one blade, and correlated with the visualization. Unloading is found to be a major feature of the pressure field at both tip and midspan, and is intimately connected with scraping effects and the behavior of the clearance vortex. Some initial hot-film velocity measurements are also presented. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Investigation of a Tip Clearance Cascade in a Water Analogy Rig | |
type | Journal Paper | |
journal volume | 108 | |
journal issue | 1 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.3239883 | |
journal fristpage | 38 | |
journal lastpage | 46 | |
identifier eissn | 0742-4795 | |
keywords | Cascades (Fluid dynamics) | |
keywords | Clearances (Engineering) | |
keywords | Water | |
keywords | Visualization | |
keywords | Blades | |
keywords | Pressure | |
keywords | Flow (Dynamics) | |
keywords | Reynolds number | |
keywords | Turbine blades | |
keywords | Gas turbines | |
keywords | High pressure (Physics) | |
keywords | Velocity measurement AND Vortices | |
tree | Journal of Engineering for Gas Turbines and Power:;1986:;volume( 108 ):;issue: 001 | |
contenttype | Fulltext |