A vortex panel method for potential flows with applications to dynamics and controls

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dc.contributor.authorMracek, Curtis Paulen
dc.contributor.committeecochairMook, Dean T.en
dc.contributor.committeecochairNayfeh, Alien
dc.contributor.committeememberHendricks, Scott L.en
dc.contributor.committeememberCliff, Eugene M.en
dc.contributor.committeememberSmith, Charles W.en
dc.contributor.committeememberFrederick, Danielen
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2015-06-24T13:35:18Zen
dc.date.available2015-06-24T13:35:18Zen
dc.date.issued1988en
dc.description.abstractA general nonlinear, nonplanar unsteady vortex panel method for potential-flow is developed. The surface is modeled as a collection of triangular elements on which the vorticity vector is piecewise linearly varying. The wake emanates from the sides and trailing edges of the thin lilting surfaces and is modeled as a progressively formed collection of vortex filaments. This model provides a continuous pressure distribution on the surface while allowing the wake to roll up as tightly as needed. The wake position is determined as part of the solution and no prior knowledge of the position or strength is assumed. An adaptive grid technique is used to redistribute the circulation of the vortex filaments of the wake as the wake sheet spreads. The aerodynamic model is coupled with dynamic equations of motion. Forced oscillation tests are conducted on flat rectangular and delta wings. Dynamic tests are performed to predict wing rock of a slender delta wing restricted to one degree of freedom in roll. The aerodynamic/dynamic model is coupled with control laws that govern the motion of flaperons so that a prescribed pitch motion is executed and wing rock is suppressed. ( 300 pages, 107 figures )en
dc.description.degreePh. D.en
dc.format.extentxi, 300 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/53593en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 18668774en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1988.M722en
dc.subject.lcshAerodynamics -- Simulation methodsen
dc.subject.lcshAirplanes -- Wingsen
dc.titleA vortex panel method for potential flows with applications to dynamics and controlsen
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

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