Developing and Using Reduced Order Models for Combined Internal and External Fluid-Structure Interaction Problems

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Dehghani Firouzabadi, Roohollah | 2008

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Type of Document: Ph.D. Dissertation
Language: Farsi
Document No: 39365 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Haddadpour, Hassan
Abstract:
This thesis deals with developing and applying reduced order modeling techniques for fluid and structure interaction problems. First, the basis and formulations of reduced order modeling technique in the function space are reviewed. Then the governing equations of structural dynamics as well as incompressible flow are reviewed and some simplifications are applied. Based on the modal analysis technique along with the finite element model of the structure and the boundary element model for flow field, some reduced order models are represented. The represented models are developed for liquid sloshing in moving and elastic tanks, fluid structure interaction in flexible shells conveying flow, vortex induced vibrations of elastic pipes in the cross wind, and the aeroelastic analysis of aircraft wing in incompressible flow. Finally, a generalized approach is introduced in order to make reduced order models for systems including both internal and external fluid-structure interaction problems. This method is applied for the aeroelastic analysis of a wing-store configuration considering the sloshing fuel in the store and a pipe conveying flow in the external cross wind
Keywords:
Fluid-Structure Interaction ; Turbulence ; Aeroelasticity ; Reduced Order Model ; Shell Conveying Fluid

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