Airfoil response to periodic disturbances: the unsteady Kutta condition

Simple item page
dc.contributor.authorPoling, David R.en
dc.contributor.committeechairTelionis, Demetrios P.en
dc.contributor.committeememberMook, Dean T.en
dc.contributor.committeememberHerbert, T.en
dc.contributor.committeememberHendricks, Scott L.en
dc.contributor.committeememberWilliams, M.en
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2017-03-10T18:55:13Zen
dc.date.available2017-03-10T18:55:13Zen
dc.date.issued1985en
dc.description.abstractUnsteady flow fields over a NACA 0012 at an angle of attack are investigated. The first is the classical pitching motion about the airfoil's quarter chord. The second is the flow over a fixed airfoil immersed in the wake of the pitching airfoil. Large reduced frequencies are considered. Measurements were obtained in a water tunnel by Laser-Doppler velocimetry. Ensemble-averaged velocity measurements were obtained in the vicinity of the trailing edges of both the pitching and the fixed airfoils. The flowfields in the wake and at the trailing edges of both airfoils were studied visually. The validity of the quasi-steady and an extension to an unsteady Kutta condition are examined. A new dynamic similarity parameter is proposed. An analytical method based on the dynamics of discrete vortices is employed. Numerical calculations of the flow over the fixed airfoil are compared with experimental results.en
dc.description.degreePh. D.en
dc.format.extentxviii, 253 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/76166en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 13160568en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1985.P644en
dc.subject.lcshAerofoilsen
dc.subject.lcshUnsteady flow (Aerodynamics)en
dc.subject.lcshViscous flowen
dc.subject.lcshWakes (Aerodynamics)en
dc.titleAirfoil response to periodic disturbances: the unsteady Kutta conditionen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V856_1985.P644.pdf
Size:
15.48 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Doctoral Dissertations