Fluid-Structure Interaction of Large Amplitude Structure Vibrations and Moderately High Reynolds Number Turbulent Flows

Open Access
Author:
Lee, Abe Hyunchoong
Graduate Program:
Acoustics
Degree:
Doctor of Philosophy
Document Type:
Dissertation
Date of Defense:
December 12, 2014
Committee Members:
  • Stephen A Hambric, Dissertation Advisor
  • Stephen A Hambric, Committee Chair
  • Robert Lee Campbell, Committee Member
  • Victor Ward Sparrow, Committee Member
  • Timothy A Brungart, Committee Member
  • Brent A Craven, Special Member
Keywords:
  • FSI
  • Lock-In
  • DDES
Abstract:
Fluid-structure interaction (FSI) eff ects often must be considered when flexible structures are subjected to unsteady flows. Large-scale unsteady flows may excite structural vibrations signi ficantly and cause the fluid flow to be altered by the large amplitude vibrations. In this research, a partitioned FSI modeling approach is employed to simulate such large amplitude structural vibrations interacting with turbulent flows. The partitioned approach is based on the fi xed-point iteration scheme that tightly couples the in-house finite-element structural code FEANL and the open-source computational-fluid dynamics (CFD) library package Open-FOAM. For turbulent ow predictions, hybrid turbulence models such as Delayed Detached-Eddy-Simulation (DDES) and k