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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.

Fluctuating lift on cylinders of rectangular cross section in smooth and turbulent flows

Namiranian, Farshid January 1985 (has links)
This thesis presents an experimental investigation of the fluctuating lift (or side force) coefficient on fixed two dimensional rectangular cylinders for various free stream turbulence intensities and scales. The measurements are made using turbulence producing devices such as grids and circular rods placed upstream of the stagnation line of the model. Measurements are reported for three fixed rectangular prisms with B/H of .5, .67 and 1 where H is the frontal dimension and B is the streamwise width of the body. The method of measurement made it possible to vary the body span so that the correlation of the fluctuating side force over the body span could be investigated. It was shown that for low turbulence intensity, the spanwise correlation of the fluctuating side force over the square cylinders decreases by a large amount with increasing span. For higher turbulence intensity this decrease was reduced, and for U'/U≃10% there was essentially no decrease of fluctuating lift coefficient with increase of span. / Applied Science, Faculty of / Mechanical Engineering, Department of / Graduate

Verfahren zur Berechnung des Auftriebes gegebener Tragflächen-Profile

Höhndorf, Fritz, January 1926 (has links)
Thesis (doctoral)--Friedrich-Wilhelms-Universität zu Berlin, 1926. / "Sonderabdruck aus: Zeitschrift für angewandte Mathematik und Mechanik, Band 6, 1926, Seite 265 bis 283"--P. [1]. Vita. Includes bibliographical references.

An experimental investigation of high rate/high lift aerodynamics of an unsteady airfoil

Yeow, Kim Fong. January 1989 (has links)
Thesis (M.S.)--Ohio University, March, 1989. / Title from PDF t.p.

Turbulence modeling for high-lift multi-element airfoil configurations.

Godin, Philippe. January 2004 (has links)
Thesis (Ph. D.)--University of Toronto, 2004. / Adviser: D.W. Zingg.

Determination of average lift of a rapidly pitching airfoil

Linn, Anthony Blane. January 2000 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: dynamic; stall; pitching. Includes bibliographical references (p. 99).

On the experimental investigation of vortex excited pressure fluctuations

Heine, Walter January 1964 (has links)
Construction and calibration of a piezoelectric transducer capable of measuring acoustic level pressure fluctuations occurring on the surface of a body due to shed vortices is described. The application of the transducer as a wake survey equipment is also explained. The fluctuating pressure and wake geometry study carried out using two dimensional models of several bluff and streamlined bodies indicate that (1) Fluctuating lift coefficient decreases with reduction in bluffness of the body. (2) For square and rectangular cylinders, as well as for the elliptic cylinder at large angles of attack, the amplitude of fluctuating pressure is minimum at the points where static pressure is maximum. (3) Fluctuating lift coefficient for the bodies with sharp leading edge (e.g. square and rectangular cylinders) is considerably larger than the corresponding static value, while for the circular cylinder, elliptic cylinder and the wing, the fluctuating coefficients were found to be smaller than their static counterpart. (4) The self excited motion of the body, particularly a bluff body, does not affect either the frequency of shedding vortices or the fluctuating pressure, for frequencies above vortex resonance. / Applied Science, Faculty of / Mechanical Engineering, Department of / Graduate

The prediction of viscous flow round multiple-section aerofoils.

Seebohm, Thomas January 1972 (has links)
No description available.

Lift distributions on low aspect ratio wings at low Reynolds numbers

Sathaye, Sagar Sanjeev. January 2004 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: Low Reynolds Number; Micro Air Vehicle; Low Aspect Ratio; Spanwise pressure measurements; Spanwise Lift Distributions. Includes bibliographical references (p. 84-85).

Circulation methods in unsteady and three-dimensional flows

Yuan, Jiankun. January 2002 (has links)
Thesis (Ph. D.)--Worcester Polytechnic Institute. / Keywords: Vortex; unsteady flow; circulation; three-dimensional flow; aerodynamics; instantaneous lift. Includes bibliographical references (p. 182-188).

The development of a controlled lateral gust facility for determining the transfer function of a lifting surface

Bartlett, Felton Drew 05 1900 (has links)
No description available.

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