Conference paper
Simulation of Nonlinear Waves Interacting with a Heaving Floating Body using a p-Multigrid Spectral Element Method
Technical University of Denmark1
Universidad Politécnica de Madrid2
Department of Applied Mathematics and Computer Science, Technical University of Denmark3
Scientific Computing, Department of Applied Mathematics and Computer Science, Technical University of Denmark4
Center for Energy Resources Engineering, Centers, Technical University of Denmark5
Aalborg University6
We present a Spectral Element Fully Nonlinear Potential Flow (FNPF- SEM) model developed for the simulation of wave-body interactions between nonlinear free surface waves and impermeable structures. The solver is accelerated using an iterative p-multigrid algorithm. Two cases are considered: (i) a surface piercing box forced into vertical motion creating radiated waves and (ii) a rectangular box released above its equilibrium resulting in freely decaying heave motion.
The FNPF-SEM model is validated by comparing the computed hydrodynamic forces against those obtained by a Navier-Stokes solver. Although not perfect agreement is observed the results are promising, a significant speedup due to the iterative algorithm is however seen.
Language: | English |
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Publisher: | International Society of Offshore and Polar Engineers |
Year: | 2021 |
Pages: | 1569-1576 |
Proceedings: | 31<sup>st</sup> International Ocean and Polar Engineering Conference |
Series: | Proceedings of the International Offshore and Polar Engineering Conference |
ISBN: | 1880653826 and 9781880653821 |
ISSN: | 15551792 and 10986189 |
Types: | Conference paper |
ORCIDs: | Engsig-Karup, Allan P. |