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Investigation of Numerical Beach Position Effects on the Hydrodynamics of a Submerged Horizontal Plate Device Under Sea State Conditions

Journal Article

Title: Investigation of Numerical Beach Position Effects on the Hydrodynamics of a Submerged Horizontal Plate Device Under Sea State Conditions
Author:
Thum, G. ; Motta, V.; dos Santos, E.; Oliveria Rocha, L.A.; Machado, B.; Isoldi, L.
Publication Date:
Journal:
processes
Volume:
14
Issue:
12
Pages:
1934
Publisher:
MDPI
Affiliation:
Federal University of Rio Grande (FURG), Federal University of Rio Grande do Sul (UFRGS)
Technology:
Wave, Oscillating Wave Surge Converter
Collection Method:
Modeling
Resource:
Site Characterization
Engineering:
Hydrodynamics
Language:
English

Document Access

Website:
External Link
Attachment: Access File
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Citation

Thum, G. ; Motta, V.; dos Santos, E.; Oliveria Rocha, L.A.; Machado, B.; Isoldi, L. (2026). Investigation of Numerical Beach Position Effects on the Hydrodynamics of a Submerged Horizontal Plate Device Under Sea State Conditions. processes, 14(12), 1934.
@article{Thum-2026-,
author = {Thum, G and Motta, V and dos Santos, E and Oliveria Rocha, LA and Machado, B and Isoldi, L},
title = {Investigation of Numerical Beach Position Effects on the Hydrodynamics of a Submerged Horizontal Plate Device Under Sea State Conditions},
journal = {processes},
year = {2026},
month = {jun},
publisher = {MDPI},
volume = {14},
number = {12},
pages = {1934},
url = {https://www.mdpi.com/2227-9717/14/12/1934},
keywords = {Wave, Oscillating Wave Surge Converter, Modeling, Site Characterization, Hydrodynamics},
}
Export Citation to BibTex
TY - JOUR
TI - Investigation of Numerical Beach Position Effects on the Hydrodynamics of a Submerged Horizontal Plate Device Under Sea State Conditions
AU - Thum, G
AU - Motta, V
AU - dos Santos, E
AU - Oliveria Rocha, LA
AU - Machado, B
AU - Isoldi, L
T2 - processes
AB - Employing the WaveMIMO methodology, the present numerical study evaluates a submerged horizontal plate (SHP) device under the incidence of representative regular and realistic irregular waves associated with the sea state off the coast of Rio Grande, Brazil. The dual functionality of the SHP device is investigated, considering its operation as a breakwater (BW) and as a wave energy converter (WEC). The main focus of this study is to investigate the effects of numerical beach (NB) positioning on the hydrodynamic response of the SHP. The governing equations for mass, momentum, and volume fraction are solved using the finite volume method (FVM), while the water–air interaction is modeled through the volume of fluid (VOF) approach. The analysis assessed the influence of SHP length (Lp) using five different values. For the tested Rio Grande sea state, SHP geometry, two-dimensional numerical model, and adopted hydrodynamic indicators, the results show that the exclusive use of representative regular waves was not sufficient to reproduce the hydrodynamic trends obtained under realistic irregular waves. The SHP demonstrates its highest BW performance in reducing the significant wave height at 3Lp for representative regular waves and realistic irregular waves. As a WEC, it achieves its highest axial velocity at 3Lp for representative regular waves and 1.5Lp and 2Lp for realistic irregular waves. The performance of the SHP as BW-WEC is the highest at 3Lp for regular waves and 2.5Lp for realistic irregular waves. In contrast to previous work, in which the NB was kept at a fixed position, the present study indicates that the downstream computational-domain configuration, including the relative positioning between the SHP and the NB, is an important factor affecting the monitored hydrodynamic response and should be carefully defined in CFD wave-flume simulations.
DA - 2026/06//
PY - 2026
PB - MDPI
VL - 14
IS - 12
SP - 1934
UR - https://www.mdpi.com/2227-9717/14/12/1934
LA - English
KW - Wave
KW - Oscillating Wave Surge Converter
KW - Modeling
KW - Site Characterization
KW - Hydrodynamics
ER -
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Abstract

Employing the WaveMIMO methodology, the present numerical study evaluates a submerged horizontal plate (SHP) device under the incidence of representative regular and realistic irregular waves associated with the sea state off the coast of Rio Grande, Brazil. The dual functionality of the SHP device is investigated, considering its operation as a breakwater (BW) and as a wave energy converter (WEC). The main focus of this study is to investigate the effects of numerical beach (NB) positioning on the hydrodynamic response of the SHP. The governing equations for mass, momentum, and volume fraction are solved using the finite volume method (FVM), while the water–air interaction is modeled through the volume of fluid (VOF) approach. The analysis assessed the influence of SHP length (Lp) using five different values. For the tested Rio Grande sea state, SHP geometry, two-dimensional numerical model, and adopted hydrodynamic indicators, the results show that the exclusive use of representative regular waves was not sufficient to reproduce the hydrodynamic trends obtained under realistic irregular waves. The SHP demonstrates its highest BW performance in reducing the significant wave height at 3Lp for representative regular waves and realistic irregular waves. As a WEC, it achieves its highest axial velocity at 3Lp for representative regular waves and 1.5Lp and 2Lp for realistic irregular waves. The performance of the SHP as BW-WEC is the highest at 3Lp for regular waves and 2.5Lp for realistic irregular waves. In contrast to previous work, in which the NB was kept at a fixed position, the present study indicates that the downstream computational-domain configuration, including the relative positioning between the SHP and the NB, is an important factor affecting the monitored hydrodynamic response and should be carefully defined in CFD wave-flume simulations.