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contributor authorRonald S. Bunker
date accessioned2017-05-09T00:35:46Z
date available2017-05-09T00:35:46Z
date copyrightOctober, 2009
date issued2009
identifier issn0889-504X
identifier otherJOTUEI-28758#041018_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/142149
description abstractThis study presents a summary of the effects of manufacturing methods and processing steps upon the resulting thermal boundary conditions for typical highly cooled turbine airfoils. Specific emphasis is placed on the conservatism that must be “designed into” the component for survival due to realistic manufacturing tolerances. Using the features of a typical blade design, the main geometric factors that can influence the blade heat transfer capability through manufacturing variability are enumerated. The tolerances on those geometric factors are provided, and the approximate quantitative impact on thermal boundary conditions is summarized. A simple example of airfoil cooling for a representative wall section is used to tabulate the variations with the resulting changes in the most affected thermal boundary conditions. Each of the main geometric factors is then evaluated in terms of its possible effect on maximum metal temperature. Paretos of the effects of manufacturing factors exhibit which factors are key and where tighter tolerances may help. Monte Carlo analysis results show the probability distributions associated with overall cooling changes tied to the tolerances.
publisherThe American Society of Mechanical Engineers (ASME)
titleThe Effects of Manufacturing Tolerances on Gas Turbine Cooling
typeJournal Paper
journal volume131
journal issue4
journal titleJournal of Turbomachinery
identifier doi10.1115/1.3072494
journal fristpage41018
identifier eissn1528-8900
keywordsHeat transfer
keywordsCooling
keywordsManufacturing
keywordsDesign
keywordsBlades
keywordsAirfoils
keywordsTemperature
keywordsMetals
keywordsFlow (Dynamics) AND Channels (Hydraulic engineering)
treeJournal of Turbomachinery:;2009:;volume( 131 ):;issue: 004
contenttypeFulltext


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