Experimental and numerical investigation of high temperature jet impingement for turbine cooling applications.

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dc.contributor.advisor Wright, Lesley Mae. Martin, Evan L.
dc.contributor.other Baylor University. Dept. of Mechanical Engineering. en 2011-05
dc.description.abstract Modern gas turbine engines commonly operate at temperatures above the melting point of the turbine’s blades and vanes. Internal and external cooling of the blades is required for sustained operation and prolonged engine life. Jet impingement, an aggressive form of cooling, is typically used in the airfoil leading edge which is exposed to extreme heat loads. A parametric study is used to experimentally and numerically investigate high temperature jet impingement in the blade leading edge. The effects of jet Reynolds number (Rejet), jet-to-target surface spacing (ℓ/d), jet-to-jet spacing (s/d), jet-to-target surface curvature (D/d), and jet temperature on stagnation Nusselt numbers are evaluated in a high temperature test apparatus. The facility is validated against correlations developed in previous studies. The experimental study is complimented with CFD simulations performed using commercially available software. Nusselt number results show strong dependence on Reynolds number and geometry yet little or no dependence on jet temperature. en
dc.rights Baylor University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact for inquiries about permission. en
dc.subject Jet impingement. en
dc.subject Gas turbine heat transfer. en
dc.subject Leading edge. en
dc.subject CFD. en
dc.subject High temperature. en
dc.title Experimental and numerical investigation of high temperature jet impingement for turbine cooling applications. en
dc.type Thesis en M.S.M.E. en
dc.rights.accessrights Worldwide access. en
dc.rights.accessrights Access changed 9/12/13.
dc.contributor.department Engineering. en

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