TY - JOUR
T1 - Non-linear wave generation and absorption using open boundaries within DualSPHysics
AU - Verbrugghe, Tim
AU - Domínguez, J. M.
AU - Altomare, Corrado
AU - Tafuni, Angelantonio
AU - Vacondio, Renato
AU - Troch, Peter
AU - Kortenhaus, Andreas
N1 - Funding Information:
This work was supported by the Agency for Innovation by Science and Technology in Flanders (IWT/Vlaio), Belgium with the scholarship 141402 . This work was also partially financed by Xunta de Galicia (Spain) under project ED431C 2017/64 Programa de Consolidación e Estructuración de Unidades de Investigaciósn Competitivas (Grupos de Referencia Competitiva) cofunded by European Regional Development Fund (FEDER) and by Xunta de Galicia (Spain) postdoctoral grant ED481B-2018/020 . The work was also funded by the Ministry of Economy and Competitiveness of the Government of Spain under project WELCOME ENE2016-75074-C2-1-R and by EU under ERDF (European Regional Development Fund) through the Interreg project MarRISK ( 0262-MARRISK-1-E ). This work was partially supported by the Italian Ministry of Education, University and Research (MUIR), Italy under the Scientific Independence of Young Researchers project, Grant Number RBSI14R1GP , CUP code D92I15000190001.
Funding Information:
This work was supported by the Agency for Innovation by Science and Technology in Flanders (IWT/Vlaio), Belgium with the scholarship 141402. This work was also partially financed by Xunta de Galicia (Spain) under project ED431C 2017/64 Programa de Consolidación e Estructuración de Unidades de Investigaciósn Competitivas (Grupos de Referencia Competitiva) cofunded by European Regional Development Fund (FEDER) and by Xunta de Galicia (Spain) postdoctoral grant ED481B-2018/020. The work was also funded by the Ministry of Economy and Competitiveness of the Government of Spain under project WELCOME ENE2016-75074-C2-1-R and by EU under ERDF (European Regional Development Fund) through the Interreg project MarRISK (0262-MARRISK-1-E). This work was partially supported by the Italian Ministry of Education, University and Research (MUIR), Italy under the Scientific Independence of Young Researchers project, Grant Number RBSI14R1GP, CUP code D92I15000190001.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/7
Y1 - 2019/7
N2 - The present work introduces the implementation of wave generation and wave absorption of non-linear, long-crested regular and irregular waves in the WCSPH-based (Weakly Compressible Smoothed Particle Hydrodynamics) DualSPHysics solver. Open boundaries are applied here for both wave generation and absorption. These boundaries consist of buffer zones, on which physical quantities are imposed, or extrapolated from the fluid domain using ghost nodes. Several layers of buffer particles are used to create an inlet and an outlet, where the horizontal component of the orbital velocities, surface elevation and pressure can be imposed from any external source or extrapolated from the fluid domain. This allows the creation of a numerical wave flume with a length of one wavelength. Reflections within the fluid domain are successfully mitigated using a velocity correction term at both inlet and outlet. The implementation is validated with theoretical solutions, in terms of water surface elevation, wave orbital velocities, and dynamic pressure. The model proves to be capable of propagating waves with less than 5% reflection, and RMSE errors on physical quantities lower than 4.3%. The application of open boundaries proves to be an accurate method to generate and absorb non-linear waves within a restricted domain.
AB - The present work introduces the implementation of wave generation and wave absorption of non-linear, long-crested regular and irregular waves in the WCSPH-based (Weakly Compressible Smoothed Particle Hydrodynamics) DualSPHysics solver. Open boundaries are applied here for both wave generation and absorption. These boundaries consist of buffer zones, on which physical quantities are imposed, or extrapolated from the fluid domain using ghost nodes. Several layers of buffer particles are used to create an inlet and an outlet, where the horizontal component of the orbital velocities, surface elevation and pressure can be imposed from any external source or extrapolated from the fluid domain. This allows the creation of a numerical wave flume with a length of one wavelength. Reflections within the fluid domain are successfully mitigated using a velocity correction term at both inlet and outlet. The implementation is validated with theoretical solutions, in terms of water surface elevation, wave orbital velocities, and dynamic pressure. The model proves to be capable of propagating waves with less than 5% reflection, and RMSE errors on physical quantities lower than 4.3%. The application of open boundaries proves to be an accurate method to generate and absorb non-linear waves within a restricted domain.
KW - DualSPHysics
KW - Open boundaries
KW - Smoothed particle hydrodynamics
KW - Wave absorption
KW - Wave generation
KW - Wave propagation
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U2 - 10.1016/j.cpc.2019.02.003
DO - 10.1016/j.cpc.2019.02.003
M3 - Article
AN - SCOPUS:85062030181
SN - 0010-4655
VL - 240
SP - 46
EP - 59
JO - Computer Physics Communications
JF - Computer Physics Communications
ER -