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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Secondary flows and inlet skew in axial flow turbine cascades

Walsh, Joseph Anthony January 1987 (has links)
This thesis presents a detailed experimental investigation of the effects of inlet skew on the secondary flows and losses in a linear cascade of high turning turbine rotor blades. The blade that was used was modified from its original design to give aerodynamic similarity in the cascade flow conditions. Three levels of inlet skew were investigated using pressure probe instrumentation and the surface oil flow technique of flow visualisation. The results have shown that inlet skew has a profound effect on the secondary flows and on the magnitude of the secondary losses. The flowfield of the cascade was modelled using several computer models. Although reasonable results were obtained with a fully viscous three-dimensional code the other models were unable to predict accurately the magnitude of the losses or even the relative effect of inlet skew on the losses. This thesis also presents measurements of the turbulent flowfield of a similar linear cascade. It was found that regions of high turbulent kinetic energy were associated with regions of high total pressure loss. It was also found that the mass averaged total pressure loss and turbulent kinetic energy followed similar distributions in the cascade.
22

Predictions and experimental investigations on the performance of Wells air turbine

Tan, C. P. January 1983 (has links)
No description available.
23

Optimal lifting surfaces, including end plates, ground effect & thickness / David William Fin Standingford.

Standingford, David William Fin January 1997 (has links)
Bibliography: leaves 164-172. / xii, 172 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The task of calculating the aerodynamic load distribution on a thin three-dimensional lifting surface or wing of finite aspect ratio at small angle of attack presents difficulties for most numerical methods. The two-dimensional lifting-surface integral equation that must be solved is highly singular, and does not possess analytic solutions, even for simple plan-form geometries such as rectangles or ellipses. / Thesis (Ph.D.)--University of Adelaide, Dept. of Applied Mathematics, 1998
24

Optimal lifting surfaces, including end plates, ground effect & thickness / David William Fin Standingford.

Standingford, David William Fin January 1997 (has links)
Bibliography: leaves 164-172. / xii, 172 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The task of calculating the aerodynamic load distribution on a thin three-dimensional lifting surface or wing of finite aspect ratio at small angle of attack presents difficulties for most numerical methods. The two-dimensional lifting-surface integral equation that must be solved is highly singular, and does not possess analytic solutions, even for simple plan-form geometries such as rectangles or ellipses. / Thesis (Ph.D.)--University of Adelaide, Dept. of Applied Mathematics, 1998
25

Experimental study on the effects of density, Mach number and geometry on the large scale structure in a turbulent jet and its radiated noise /

Lee, Hock Seng. January 1983 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, Dept. of Mechanical Engineering, 1984. / A supplement to this thesis containing tabulations of all acoustic data is available from the Department of Mechanical Engineering, University of Adelaide. Includes bibliographical references (leaves 109-113).
26

Optimal lifting surfaces, including end plates, ground effect & thickness /

Standingford, David William Fin. January 1997 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, Dept. of Applied Mathematics, 1998. / Includes bibliographical references (leaves 164-172).
27

Separating contributions of small-scale turbulence, large-scale turbulence, and core noise from far-field exhaust noise measurements

Nance, Donald Kirby. January 2007 (has links)
Thesis (Ph.D)--Aerospace Engineering, Georgia Institute of Technology, 2008. / Committee Chair: Ahuja, Krishan K.; Committee Member: Cunefare, Kenneth; Committee Member: Lieuwen, Tim C.; Committee Member: Mendoza, Jeff; Committee Member: Sankar, Lakshmi.
28

Studies in aeroacoustics of coaxial vortex rings /

Leung, Chi-kin, Randolph. January 1997 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1998. / Includes bibliographical references (leaf 246-270).
29

Aeroacoustic characteristics of supersonic twin jets

Yerapotina, Sandeep. Anjaneyulu, Krothapalli. January 2005 (has links)
Thesis (M. A.)--Florida State University, 2005. / Advisor: Krothapalli Anjaneyulu, Florida State University, College of Engineering, Dept. of Mechanical Engineering. Title and description from dissertation home page (viewed Jan 27, 2006). Document formatted into pages; contains x, 72 pages. Includes bibliographical references.
30

Fourth order Multi-Time-Stepping Adams-Bashforth (MTSAB) scheme for NASA Glenn Research Center's Broadband Aeroacoustic Stator Simulation (BASS) Code

Allampalli, Vasanth. January 2010 (has links)
Dissertation (Ph.D.)--University of Toledo, 2010. / Typescript. "Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Doctor of Philosophy Degree in Engineering." "A dissertation entitled"--at head of title. Title from title page of PDF document. Bibliography: p. 152-156.

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