This thesis elaborates three aspects in the field of flow-induced vibrations associated with annular geometries. / A method to find the unsteady fluid forces on a cylinder oscillating in annular turbulent flow is developed by considering the superposition of the turbulent fluctuating quantities on potential flow. The theory is compared with experiments. / Then, the unsteady fluid forces acting on the vibrating cylinder walls of non-uniform annular configurations are computed by a method which performs the accurate time integration of the Navier-Stokes equations. It is the extension for unsteady flows of the method of artificial compressibility used for steady flows. A time-discretization of the momentum equation using a three-point-backward implicit scheme is introduced, and the addition of pseudo-time derivative terms to the semi-discretized equations, including artificial compressibility in the continuity equation, allows to use time-marching solution techniques thereafter. / Finally, the integration method used for the Navier-Stokes equations is combined with the equation governing the dynamical behavior of a structure in order to perform the fluid-structure stability analysis of this system in the time domain.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.70306 |
| Date | January 1991 |
| Creators | Bélanger, François. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Mechanical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001275187, proquestno: AAINN74739, Theses scanned by UMI/ProQuest. |
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