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Technology
Assessment & Research (TA&R) Program
| Project Number |
483 |
| Date of Summary |
May 5, 2010 |
| Subject |
CFD Simulation of Ocean Turbulence Interactions with Spar Platforms |
| Performing Activity |
OTRC |
| Principal Investigator |
Kallinderis |
| Contracting Agency |
Minerals Management Service |
| Estimated Completion |
Project is being closed without completion. |
| Description |
Effect of ocean turbulence on the hydrodynamic forces is currently an
important issue for offshore installations in the GOM. The two focus areas
are; 1 – completion of the CFD study in 2-D of the effect of upstream
turbulence on the hydrodynamic forces exerted on cylinders, and 2 – study of
the effect of upstream turbulence using 3-D CFD simulations. The project
developed techniques for the simulating prescribed turbulence structures in
the upstream flow field, as well as on simulations of flows around cylinders
with and without turbulence being present in the current profile. Numerical
implementation of turbulence necessitates investigation of required
computational meshes and time-steps for the appropriate resolution of
spatial and time scales of the problem. |
| Progress |
Inlet turbulence profiles for two different Reynolds numbers of Re = 150 and
Re = 1000 were tested. The first case essentially represents laminar flow
with low upstream turbulence. In both cases, the simulations show similar
patterns of response to the inlet turbulence. Investigation of the
appropriate upstream boundary condition for the turbulence flow variable
studied the influence of different values of this variable. Then the 3-D
turbulence was simulated with the corresponding hydrodynamic forces and
compared to those obtained in the 2-D simulations. |
| Report |
The period of performance for this cooperative agreement has
expired. The Final Reports have not been received from TEES. |
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