Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"Lomax"”.
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A modified Baldwin-Lomax turbulence model for turbomachinery wakes
A critical evaluation of the Baldwin-lomax (Bl) turbulence model for shock/shear layer interactions, reversed flow, and curved, asymmetric wakes is made. No general definition for reference line is available for wakes, and difficulties exist for length scale prediction in complex flows. An entropy …
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Listening to the Lomax archive: the sonic rhetorics of American vernacular music in the 1930s
… times of crisis. In 1933, folklorists John A. Lomax and his son Alan set out as emissaries for the Library of Congress to record the “folksong of the American Negro” in several Southern African-American prisons. As this dissertation demonstrates, the music they gathered for the Library’s …
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The joint distribution of the maximum and duration of stochastic events driven by Pareto II observations
… and identically distributed Pareto II (Lomax) observations. The bivariate distribution is referred to as the geometric Marshall-Olkin Lomax distribution (GMOL). A related model for a geometric maximum of IID exponential observations was introduced by Kozubowski and Panorska (2008) and …
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On estimation and goodness-of-fit testing for the Pareto distribution
… Two of these members, the Pareto Type I and the Lomax distributions, are of particular interest in this thesis. The Pareto Type I distribution is a popular choice of model in many applications where heavy tailed data are modelled. This flexible distribution if often used to model the tails of, …
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Ears Taut to Hear: Sound Recording and Twentieth-Century American Literature
… texts by Gertrude Stein, John Dos Passos, Alan Lomax, Sidney Bechet, Langston Hughes, Amiri Baraka, Jack Kerouac, William S. Burroughs, and August Wilson, I explore how literature across a number of genres and modes extended formal techniques in response to the advent of the phonograph, tape, …
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Experimental and numerical investigation of transonic turbine cascade flow
… the trailing edge and wake region, the Baldwin-Lomax model was used. Good agreement of calculations and measurements was obtained for the blade surface and cascade tunnel side wall static pressures, the trailing edge shock structure, and the density field. The agreement between the measured and …
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High Angle of Attack Forebody Flow Physics and Design Emphasizing Directional Stability
… equations used a form of the Baldwin-Lomax turbulence model modified to account for massive crossflow separation. Using the insight provided by the solutions obtained using CFD, together with comparison with limited available data, the aerodynamics of forebodies with positive …
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Numerical Simulation of the Transition Region in Hypersonic Flow
… in the Navier-Stokes code GASP. Baldwin-Lomax is an algebraic turbulence model in which the authors discuss how it can be used to simulate the transition region. Wilcox developed a procedure to use the low-Reynolds number k - w model as a transition region model where a roughness strip is …
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Simultaneous direct measurements of skin friction and heat flux in a supersonic flow
… at each grid point on the wall. The Baldwin-Lomax algebraic turbulence model was used with the thin layer approximations. The comparison showed that the difference in the skin friction and heat flux was less than 10 % of the measured data when the temperature mismatch was less than 8.5 °K, …
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Numerical Study of the Stability of Embedded Supersonic Compressor Stages
… numerical simulation using the Baldwin-Lomax turbulence model was performed, creating several constant speed lines. The results are presented, highlighting the role shock structure plays in the stability of the compressor. The shock structure in the downstream rotor isolates the upstream …
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Turbulence modeling in hypersonic inlets
… data. The McDonald Camarata (MC) and Baldwin Lomax (BL) models were the two zero-equation models used in the study. The Turbulent Kinetic Energy (TKE) model was chosen as a representative higher order model. The MC model, when run with transition of flow, provides a solution which compares …
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Techniques for compressible flow calculations on multi-zone grids
… problem. Due to the poor results of the Baldwin-Lomax turbulent model for separated flows, only the attached flowtield is considered in the analytic forebody calculation. Finally, as applications of this approach, the inviscid/viscous flowfields about several aerodynamic bodies are calculated …
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Music in Haiti: An Annotated Bibliography and Research Guide
… of Haitian music, first compiled by Alan Lomax in 1936 and 1937 for the Library of Congress, are underrepresented. Though the coverage of Haitian music has increased in scope in recent years largely due to the contributions of Michael Largey (Voudo Nation, 2006) and Gage Averill (A Day for …
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3-D flow calculations of a bifurcated 2D supersonic engine inlet at takeoff
… into PARC3D is the algebraic Baldwin Lomax model. Limitations existed in the local region where the flow interacts with the nose cone due to the inherent limitations of the turbulence model. The results showed that the flow throughout the inlet was well behaved. The turbulent boundary …
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Every Parent's Worst Nightmare: Surveillance of Criteria-based, Rampage School Shooters, 1995-2015
<p>Rampage School Shootings are a violation of one’s right to life, liberty, and the pursuit of individual happiness. Little children, school teachers head out to school, only to never return home at the end of the day. Idiosyncratic psycho-social behaviors drive Rampage School Shooter (RSS) …
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Ballads, blues, and alterity
… voices including Cecil J. Sharp and John A. Lomax alongside others who persistently challenged their orthodoxies. Chapter 2, ‘“His Rough, Stubborn Muse” | Industrial Balladry, Class, and the Politics of Realism’, investigates Marxist visions of working-class culture, showing how ideas of …
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Understanding Incubator Farms: Innovative Programs in New Farmer Development
… Viva Farms in Skagit Valley, WA; the Elma C. Lomax Incubator in Cabarrus County, NC; and Urban Edge Farm in Cranston, RI. Research methods include 30 in-person interviews with program staff and new farmer participants, site visits, and a review of program materials. Interview transcripts, …
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