Rough wall and near-hole obstruction effects on film cooling with and without a transverse trench

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dc.contributor.advisorBogard, David G.en
dc.creatorSomawardhana, Ruwan Prasannaen
dc.date.accessioned2016-03-02T17:20:20Z
dc.date.available2016-03-02T17:20:20Z
dc.date.issued2006-12en
dc.description.abstractSignificant degradation of adiabatic effectiveness can be caused by surface roughness and near-hole obstructions formed from deposition of contaminants. Since obstructions are a randomly occurring event, there are many variables to consider, namely shape, width, length, height, and position in relation to a film cooling hole. In addition to this, the level of overall surface roughness must also be considered. This study investigated these different variables on the suction side of a scaled-up turbine vane using cylindrical holes to determine what is important when considering surface roughness and obstructions. In addition, the use of a transverse trench was tested with a rough wall and near-hole obstructions and was found to be a method to mitigate a large part of the degrading effects caused by a rough surface and near-hole obstructions.en
dc.description.departmentMechanical Engineeringen
dc.format.mediumelectronicen
dc.identifierdoi:10.15781/T2241Fen
dc.identifier.urihttp://hdl.handle.net/2152/33507en
dc.language.isoenen
dc.relation.ispartofUT Electronic Theses and Dissertationsen
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en
dc.rights.restrictionRestricteden
dc.subjectAdiabatic effectivenessen
dc.subjectFilm coolingen
dc.subjectTurbine vaneen
dc.titleRough wall and near-hole obstruction effects on film cooling with and without a transverse trenchen
dc.typeThesisen
dc.type.genreThesisen
thesis.degree.departmentMechanical Engineeringen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorThe University of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Scienceen

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