A numerical model for the simulation of fully-coupled fluid-structure
interaction is developed in this study. In modeling the fluid, the Reynolds
Averaged Navier-Stokes equations are solved for an incompressible viscous
fluid field and a k-ε model is employed for turbulence computations.
Hydrodynamic forces obtained by the integration of the fluid pressure along
the structural boundaries are applied as external excitation forces to the
structural system and the dynamic response of the structural system is
computed based on dynamic equilibrium. To determine the nonlinear dynamic
response of the structure in the flow field, iterative procedures are developed.
The numerical model is verified and validated through comparisons with
several different types of experiments.
The numerical model is then applied to examine the runup and
rundown of the submarine landslide generated waves with various
configurations. The functional relationships between the maximum
runup/rundown and the geometric and material properties of landslides are
obtained.
The numerical model is also applied to predict the experimental
moored response of a structure subjected to periodic waves. The linear and
nonlinear waves, as well as the structural response, are modeled accurately.
The dynamic response of the moored structure, which is modeled with
nonlinear restoring forces, shows the characteristic behaviors such as subharmonic/
super-harmonic responses. General application procedures for the
fluid-structure interaction model are presented. The subaerial and aerial drop of
a rigid body and the influence of impact on the fluid body are examined. / Graduation date: 2005
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28733 |
| Date | 01 November 2004 |
| Creators | Yuk, Dongjun |
| Contributors | Liu, Philip L. F., Yim, Solomon C. S. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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