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contributor authorL. He
date accessioned2017-05-09T00:55:22Z
date available2017-05-09T00:55:22Z
date copyrightMarch, 2012
date issued2012
identifier issn0889-504X
identifier otherJOTUEI-28782#021018_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/150550
description abstractGas turbine performance improvement requires efficient and accurate prediction tools for film-cooling of high pressure turbine blades. Use of computational fluid dynamics in the cooling design faces a challenge due to a wide range of length scales to be resolved. The difficulty is also seriously compounded by the basic feature that each blade has a large number of cooling holes. In the present paper, a new spectral approach is proposed to address this modeling difficulty. The motivation is to resolve the aerothermal flow field and mixing process of film-cooling by the numerical solution to the first principle based governing equations while avoiding large computational resources required in directly solving a large number of cooling holes. By using a spectral representation for each corresponding mesh point, the block-to-block (hole-to-hole) variation can be accurately and efficiently modeled. The number of mesh blocks (cooling holes) to be solved is then dictated by the number of unknowns required to determine the spectrum. Consequently, the aerothermal field for a large number of cooling hole blocks can be obtained by solving a much smaller set of blocks. The modeling consideration, method formulation, validation, and demonstration results will be presented.
publisherThe American Society of Mechanical Engineers (ASME)
titleBlock-Spectral Approach to Film-Cooling Modeling
typeJournal Paper
journal volume134
journal issue2
journal titleJournal of Turbomachinery
identifier doi10.1115/1.4003073
journal fristpage21018
identifier eissn1528-8900
keywordsFlow (Dynamics)
keywordsCooling
keywordsModeling
keywordsSpectra (Spectroscopy)
keywordsTemperature AND Coolants
treeJournal of Turbomachinery:;2012:;volume( 134 ):;issue: 002
contenttypeFulltext


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