Abstract
| Original language | English |
|---|---|
| Publication date | 2015 |
| Number of pages | 1 |
| Publication status | Published - 2015 |
| Event | 2nd Frontiers in Computational Physics Conference: Energy Sciences - Zurich, Switzerland Duration: 3 Jun 2015 → 5 Jun 2015 Conference number: 2 http://www.frontiersincomputationalphysics.com/ |
Conference
| Conference | 2nd Frontiers in Computational Physics Conference: Energy Sciences |
|---|---|
| Number | 2 |
| Country | Switzerland |
| City | Zurich |
| Period | 03/06/2015 → 05/06/2015 |
| Internet address |
Bibliographical note
Invited talk presented at 2nd Frontiers in Computational Physics conference 2015.Cite this
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Spectral element modelling of floating bodies in a Boussinesq framework. / Engsig-Karup, Allan Peter; Eskilsson, Claes; Ricchiuto, Mario .
2015. Abstract from 2nd Frontiers in Computational Physics Conference: Energy Sciences , Zurich, Switzerland.Research output: Contribution to conference › Conference abstract for conference › Research
TY - ABST
T1 - Spectral element modelling of floating bodies in a Boussinesq framework
AU - Engsig-Karup, Allan Peter
AU - Eskilsson, Claes
AU - Ricchiuto, Mario
N1 - Invited talk presented at 2nd Frontiers in Computational Physics conference 2015.
PY - 2015
Y1 - 2015
N2 - The wave energy sector relies heavily on the use of linear hydrodynamic models for the assessment of motions, loads and power production. The linear codes are computationally efficient and produce good results if applied within their application window. However, recent studies using two-phase VOF-RANS simulations of point-absorbers close to resonance have indicated that there might be significant differences between the power production using linear hydrodynamics and VOF-RANS. At present VOF-RANS simulations are too computational expensive to be used in the design cycle. In shallow and intermediate waters a possible middle way between the highly simplified and fast linear hydrodynamics and the very complete but slow VOF-RANS simulations is to use nonlinear, dispersive wave equations of Boussinesq-type. Jiang (2001) presented a unified approach for including bodies into the Boussinesq framework and solved the system with finite differences. In the unified approach the pressure working on the body are solved for using the instantaneous draft. In this study we will outline how to implement the approach of Jiang in a spectral/hp element setting, and simulate the heave motion of a body using different asymptotic wave equations. We will especially focus on the stabilization of the coupled system.
AB - The wave energy sector relies heavily on the use of linear hydrodynamic models for the assessment of motions, loads and power production. The linear codes are computationally efficient and produce good results if applied within their application window. However, recent studies using two-phase VOF-RANS simulations of point-absorbers close to resonance have indicated that there might be significant differences between the power production using linear hydrodynamics and VOF-RANS. At present VOF-RANS simulations are too computational expensive to be used in the design cycle. In shallow and intermediate waters a possible middle way between the highly simplified and fast linear hydrodynamics and the very complete but slow VOF-RANS simulations is to use nonlinear, dispersive wave equations of Boussinesq-type. Jiang (2001) presented a unified approach for including bodies into the Boussinesq framework and solved the system with finite differences. In the unified approach the pressure working on the body are solved for using the instantaneous draft. In this study we will outline how to implement the approach of Jiang in a spectral/hp element setting, and simulate the heave motion of a body using different asymptotic wave equations. We will especially focus on the stabilization of the coupled system.
M3 - Conference abstract for conference
ER -