Free-surface flow simulations with interactively moving bodies
The simulation of free-surface flow around moored or floating objects faces a series of challenges, concerning the flow modelling and the numerical solution method. One of the challenges is the simulation of objects whose dynamics is determined by a two-way interaction with the incoming waves. The ’...
| Main Authors: | , , , |
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| Format: | Conference Object |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | http://hdl.handle.net/11370/b3c873fe-6cb6-4cbf-9f58-a796014ed6eb https://research.rug.nl/en/publications/freesurface-flow-simulations-with-interactively-moving-bodies(b3c873fe-6cb6-4cbf-9f58-a796014ed6eb).html |
| Summary: | The simulation of free-surface flow around moored or floating objects faces a series of challenges, concerning the flow modelling and the numerical solution method. One of the challenges is the simulation of objects whose dynamics is determined by a two-way interaction with the incoming waves. The ’traditional’ way of numerically coupling the flow dynamics with the dynamics of a floating object becomes unstable (or requires severe underrelaxation) when the added mass is larger than the mass of the object. To deal with this two-way interaction, a more simultaneous type of numerical coupling is being developed. The paper will focus on this issue. To demonstrate the quasi-simultaneous method, a number of simulation results for engineering applications from the offshore industry will be presented, such as the motion of a moored TLP platform in extreme waves, and a freefall life boat dropping into wavy water. |
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