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contributor authorR. W. Radomsky
contributor authorK. A. Thole
date accessioned2017-05-09T00:03:39Z
date available2017-05-09T00:03:39Z
date copyrightApril, 2000
date issued2000
identifier issn0889-504X
identifier otherJOTUEI-28676#255_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/124485
description abstractTurbine vanes experience high convective surface heat transfer as a consequence of the turbulent flow exiting the combustor. Before improvements to vane heat transfer predictions through boundary layer calculations can be made, we need to understand how the turbulent flow in the inviscid region of the passage reacts as it passes between two adjacent turbine vanes. In this study, a scaled-up turbine vane geometry was used in a low-speed wind tunnel simulation. The test section included a central airfoil with two adjacent vanes. To generate the 20 percent turbulence levels at the entrance to the cascade, which simulates levels exiting the combustor, an active grid was used. Three-component laser-Doppler velocimeter measurements of the mean and fluctuating quantities were measured in a plane at the vane midspan. Coincident velocity measurements were made to quantify Reynolds shear stress and correlation coefficients. The energy spectra and length scales were also measured to give a complete set of inlet boundary conditions that can be used for numerical simulations. The results show that the turbulent kinetic energy throughout the inviscid region remained relatively high. The surface heat transfer measurements indicated high augmentation near the leading edge as well as the pressure side of the vane as a result of the elevated turbulence levels. [S0889-504X(00)02302-3]
publisherThe American Society of Mechanical Engineers (ASME)
titleFlowfield Measurements for a Highly Turbulent Flow in a Stator Vane Passage
typeJournal Paper
journal volume122
journal issue2
journal titleJournal of Turbomachinery
identifier doi10.1115/1.555442
journal fristpage255
journal lastpage262
identifier eissn1528-8900
keywordsMeasurement
keywordsTurbulence
keywordsTurbines
keywordsSuction
keywordsFlow (Dynamics)
keywordsKinetic energy
keywordsFluctuations (Physics)
keywordsStress AND Shear (Mechanics)
treeJournal of Turbomachinery:;2000:;volume( 122 ):;issue: 002
contenttypeFulltext


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