2016 Fiscal Year Final Research Report
Establishment of a Numerical Scheme for Predicting the Dynamics of a Long Flexible Pipe with 3D Vortex Method
| Project/Area Number |
26420823
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 渦励振 / 渦法 / 長大弾性管 |
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| Outline of Final Research Achievements |
A numerical scheme was established for predicting 3D dynamics of a long flexible pipe including the Vortex Induced Vibration. In this scheme, fluid and structure interaction was considered. The fluid force and the deformation of the pipe were calculated by using a 3D Vortex Method (VM) and Finite Difference Method (FDM) respectively. These two methods were weakly coupled. The fluid forces calculated by using a VM became the input values in the FDM. Then, the deformations, the velocities, and the accelerations were used for the boundary conditions in the VM.
The Vortex Method has a feature that the calculation time for one time step becomes longer as the calculation time passes. It is because that the number of the discrete vortices introduced into the flow field increases. In this research, a parallel computing with using GPUs is introduced for the calculation time-saving.
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| Free Research Field |
海洋工学
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