A numerical modeling of wave-inclined slats interaction for particle methods

Autor(es)

Pereira, Lucas Soares ; Amaro, Rubens Augusto, Jr. ; Cheng, Liang-Yee ; de Sousa, Fabricio Simeoni ; Karuka, Gustavo Massaki

• Tipo de documento: Artigo Científico
• Fonte: OCEAN ENGINEERING; v. 296, p. 21-pg., 2024-02-13.

Resumo

MPS -VG, a Virtual Grating (VG) model for the Lagrangian mesh -free Moving Particle Semi -implicit (MPS) method is proposed for replacing conventional particle -based solid modeling of gratings with a set of thin inclined slats. Unlike most approaches for perforated wave energy dampening devices, in which the flow through the device is simplified by pressure loss or damping effects without flow deflection, MPS -VG models the angular deviation caused by hydrodynamic impact on inclined slats. Both accuracy and computational performance of the model were checked through a simulation of wet dam break scenarios with the grating structures placed horizontally or vertically. The results were compared with those from fully particle -based modeling. MPS -VG correctly predicted complex wave -structure interactions using a relatively low -resolution model and significantly reduced processing time and memory storage compared to conventional particle -based MPS modeling. The evaluation of the performance of the gratings with inclined slats as wave energy dampers revealed the horizontal gratings outperformed the vertical ones. Therefore, qualitative and quantitative agreements strengthened the potential of MPS -VG as a practical and computationally efficient tool for the study of multi -scale phenomena of wave impacts on grating with inclined slats. (AU)

• Processo FAPESP: 21/11429-4 - Modelo acoplado partícula-malha para integração entre escoamento com superfície livre e estruturas deformáveis
• Beneficiário: Rubens Augusto Amaro Junior
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/07375-0 - CeMEAI - Centro de Ciências Matemáticas Aplicadas à Indústria
• Beneficiário: Francisco Louzada Neto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs