Publicação
Resolution refinement technique in a smoothed particle hydrodynamics numerical flume for coastal engineering applications
| Resumo: | Numerical modeling of the wave interaction with coastal structures is a challenging issue due to the multi-nonlinear phenomena involved, such as, wave propagation, wave transformation, interaction among incident and reflected waves, run-up / run-down, wave breaking and wave overtopping. Numerical models based on a Lagrangian formulation, like SPH (Smoothed Particle Hydrodynamics), allow simulating complex free surface flows. This work presents the new developments on a SPH numerical model for studies on wave-structure interaction made at the National Civil Engineering Laboratory (LNEC). A new semiautomatic refinement technique of particles was applied to reduce the CPU time. Simulations with a specific geometry, a wave flume with a water chamber, were made regarding the application of this technique. An analysis was made on (i) convergence with resolution, i.e. particle dimension and (ii) semi-automatic refinement. Results were compared with the solution obtained with the finer resolution. |
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| Autores principais: | Neves, D. R. |
| Outros Autores: | Didier, E.; Teixeira, P.; Neves, M. G. |
| Assunto: | Sph – smoothed particle hydrodynamics Wave-structure interaction Refinement technique Maritime structures |
| Ano: | 2013 |
| País: | Portugal |
| Tipo de documento: | documento de conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Laboratório Nacional de Engenharia Civil |
| Idioma: | inglês |
| Origem: | Repositório Científico do LNEC |
| Resumo: | Numerical modeling of the wave interaction with coastal structures is a challenging issue due to the multi-nonlinear phenomena involved, such as, wave propagation, wave transformation, interaction among incident and reflected waves, run-up / run-down, wave breaking and wave overtopping. Numerical models based on a Lagrangian formulation, like SPH (Smoothed Particle Hydrodynamics), allow simulating complex free surface flows. This work presents the new developments on a SPH numerical model for studies on wave-structure interaction made at the National Civil Engineering Laboratory (LNEC). A new semiautomatic refinement technique of particles was applied to reduce the CPU time. Simulations with a specific geometry, a wave flume with a water chamber, were made regarding the application of this technique. An analysis was made on (i) convergence with resolution, i.e. particle dimension and (ii) semi-automatic refinement. Results were compared with the solution obtained with the finer resolution. |
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