Abstract
A 3D fully nonlinear potential flow (FNPF) model based on an Eulerian formulation is presented. The model is discretizedusing high-order prismatic – possibly curvilinear – elements using a spectral element method (SEM) that has support foradaptive unstructured meshes. The paper presents details of the FNPF-SEM development, and a model is illustrated toexhibit exponential convergence for steep stream function waves to serve as validation. The model is then applied to the caseof focused waves impacting on a surface-piercing, fixed FPSO-like structure. Good agreement is found between numericaland experimental wave elevations and pressures.
| Original language | English |
|---|---|
| Journal | International Journal of Offshore and Polar Engineering |
| Volume | 29 |
| Issue number | 2 |
| Pages (from-to) | 141-148 |
| ISSN | 1053-5381 |
| DOIs | |
| Publication status | Published - 1 Jun 2019 |
Keywords
- Focused wave
- FPSO
- Fully nonlinear potential flow
- High-order numerical methods
- Spectral element method
- Unstructured meshes
- Wave–body interaction
Cite this
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Spectral element FNPF simulation of focused wave groups impacting a fixed FPSO-type body. / Engsig-Karup, Allan P.; Eskilsson, Claes.
In: International Journal of Offshore and Polar Engineering, Vol. 29, No. 2, 01.06.2019, p. 141-148.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Spectral element FNPF simulation of focused wave groups impacting a fixed FPSO-type body
AU - Engsig-Karup, Allan P.
AU - Eskilsson, Claes
PY - 2019/6/1
Y1 - 2019/6/1
N2 - A 3D fully nonlinear potential flow (FNPF) model based on an Eulerian formulation is presented. The model is discretizedusing high-order prismatic – possibly curvilinear – elements using a spectral element method (SEM) that has support foradaptive unstructured meshes. The paper presents details of the FNPF-SEM development, and a model is illustrated toexhibit exponential convergence for steep stream function waves to serve as validation. The model is then applied to the caseof focused waves impacting on a surface-piercing, fixed FPSO-like structure. Good agreement is found between numericaland experimental wave elevations and pressures.
AB - A 3D fully nonlinear potential flow (FNPF) model based on an Eulerian formulation is presented. The model is discretizedusing high-order prismatic – possibly curvilinear – elements using a spectral element method (SEM) that has support foradaptive unstructured meshes. The paper presents details of the FNPF-SEM development, and a model is illustrated toexhibit exponential convergence for steep stream function waves to serve as validation. The model is then applied to the caseof focused waves impacting on a surface-piercing, fixed FPSO-like structure. Good agreement is found between numericaland experimental wave elevations and pressures.
KW - Focused wave
KW - FPSO
KW - Fully nonlinear potential flow
KW - High-order numerical methods
KW - Spectral element method
KW - Unstructured meshes
KW - Wave–body interaction
U2 - 10.17736/ijope.2019.jc753
DO - 10.17736/ijope.2019.jc753
M3 - Journal article
AN - SCOPUS:85068934129
VL - 29
SP - 141
EP - 148
JO - International Journal of Offshore and Polar Engineering
JF - International Journal of Offshore and Polar Engineering
SN - 1053-5381
IS - 2
ER -