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The Thermal Behavior Of Film Cooled Turbulent Boundary Layers As Affected By Longitudinal Vortices
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Book Synopsis The Thermal Behavior of Film Cooled Turbulent Boundary Layers as Affected by Longitudinal Vortices by : Alfredo Ortiz
Download or read book The Thermal Behavior of Film Cooled Turbulent Boundary Layers as Affected by Longitudinal Vortices written by Alfredo Ortiz and published by . This book was released on 1987 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer effects of longitudinal vortices embedded within film-cooled turbulent boundary layers on a flat plate were examined for freestream velocities of 10 m/s and 15 m/s, and for blowing ratios ranging from 0.47 to 1.26. Moderate strength vortices were employed having circulation to freestream velocity ratios of about 1.6 cm. Spatially resolved heat transfer measurements from a constant heat flux surface and mean temperature distributions in spanwise planes show that local heat transfer is significantly affected by spanwise vortex position, and blowing ration. Of particular significance are boundary layer and vortex structural changes which occur at high blowing ratios. Keywords: Embedded vortex; Film cooling; Endwall secondary flows.
Book Synopsis Effects of Variable Properties in Film Cooled Turbulent Boundary Layers by : Alfred F. Jr Walz
Download or read book Effects of Variable Properties in Film Cooled Turbulent Boundary Layers written by Alfred F. Jr Walz and published by . This book was released on 1986 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of variable properties on heat transfer in a film-cooled turbulent boundary layer were investigated. A new procedure was developed to deduce adiabatic effectiveness from heat transfer coefficients based on the wall to freestream temperature difference, where both are representative of variable property flow conditions. The new technique was shown to be valid using data from the literature for injection into a turbulent boundary layer from one and two rows of injection holes. From these results, the variation of the coolant to mainstream density ratio was shown to have a significantly greater effect on heat transfer than variations of viscosity and thermal conductivity. Keywords: Gas turbine cooling; Film cooling; Turbulent boundary layers; Variable properties. (Theses).
Book Synopsis Effects of an Embedded Vortex on a Single Film-cooling Jet in a Turbulent Boundary Layer by : Warren W. Williams
Download or read book Effects of an Embedded Vortex on a Single Film-cooling Jet in a Turbulent Boundary Layer written by Warren W. Williams and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effects of embedded longitudinal vortices on heat transfer in a turbulent boundary layer film cooled from a single injections hole are discussed. Film coolant was injected at blowing ratios 0.50 to 1.50 at a freestream velocity of 10 m/s. A single longitudinal vortex was induced upstream of the film-cooling holes. Heat transfer measurement were made downstream of injection. Flow visualization tests were conducted after the injectant was contaminated with smoke. Surveys of mean velocity and mean temperature were also made in different spanwise normal planes. For all blowing ratios examined, the embedded vortices cause significant alterations to wall heat transfer and to film-cooling distributions. Embedded vortex, Film-cooling single jet, Heat transfer, Endwall secondary flows. (jes).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Journal of Heat Transfer written by and published by . This book was released on 1991 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Turbulent Boundary Layer on a Full-coverage Film-cooled Surface by : H. Choe
Download or read book The Turbulent Boundary Layer on a Full-coverage Film-cooled Surface written by H. Choe and published by . This book was released on 1976 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer behavior was studied in a turbulent boundary layer with full-coverage film cooling through an array of discrete holes, with injection normal to the wall surface.
Book Synopsis The Effects of an Embedded Vortex on a Film Cooled Turbulent Boundary Layer by : Stephen L. Joseph
Download or read book The Effects of an Embedded Vortex on a Film Cooled Turbulent Boundary Layer written by Stephen L. Joseph and published by . This book was released on 1986 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis was designed to model some of the secondary flow effects on endwalls, blades, and combustion chambers of gas turbine engines. Measurements were made in a turbulent boundary layer developing over a flat plate, using a single row of injection holes spaced three diameters apart inclined at 30 degrees with respect to horizontal. The injection system was designed to provide uniform injection temperatures for various blowing rates with discharge coefficients ranging from 0.58 to 0.73. The heat transfer surface was designed to provide constant heat flux with adjustable temperature range. Experimental heat transfer results were obtained with a turbulent boundary layer only, with boundary layer and injection of film cooling, with boundary layer and embedded vortex, and finally with boundary layer, film cooling, and embedded vortex. The effects of the vortex on heat transfer in the film cooled boundary layer are significant and important: (1) On the downwash side of the vortex, heat transfer is augmented, effects of the film cooling are negated and local hot spots will exist in engines. (2) Near the upwash side of the vortex coolant is pushed to the side of the vortex, appearing to augment the protection provided by film cooling.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1961 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1995 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Oata Analysis and Synthesis (CINOAS) * at Purdue. University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 33 (thesis year 1988) a total of 13,273 theses titles from 23 Canadian and 1 85 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 33 reports theses submitted in 1988, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Download or read book Rotating Machinery written by J. H. Kim and published by CRC Press. This book was released on 1992-05-01 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work the first of two contains papers presented at an international conference on the technology of rotating machinery, which specifically address transport phenomena in terms of turbine cooling heat transfer, rotating surfaces, curved ducts and rotating channels, multiphase flow and more.
Download or read book Paper written by and published by . This book was released on 1994 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Turbomachinery written by and published by . This book was released on 1994 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASME Technical Papers written by and published by . This book was released on 1997 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1990 with total page 1266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1988 with total page 1428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Turbulent Boundary Layer on a Full-coverage Film-cooled Surface by : H. Choe
Download or read book Turbulent Boundary Layer on a Full-coverage Film-cooled Surface written by H. Choe and published by . This book was released on 1976 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
