IH-3VOF: A THREE-DIMENSIONAL NAVIER-STOKES MODEL FOR WAVE AND STRUCTURE INTERACTION

Proceedings of the International Conference on Coastal Engineering

Manuel del Jesus²  Raul Guanche³  Inigo Javier Losada²  Javier Lara¹  Gabriel Barajas² 

[1] IH Cantabria, Universidad de Cantabria;Environmental Hydraulics Institute “IH Cantabria”, Universidad de Cantabria;Environmental Hydraulics Institute “IH Cantabria”, Universidad de Cantabria.

关键词: wave-structure interaction;    three dimensional modeling;    Navier-Stokes solvers;    porous media flow;   

DOI  :  10.9753/icce.v32.waves.55

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

This paper describes the capability of a new model, called IH-3VOF to simulate wave-structure interaction problems using a three-dimensional approach. The model is able to deal with physical processes associated with wave interaction with porous structures. The model considers the VARANS equations, a volume-averaged version of the traditional RANS (Reynolds Averaged Navier-Stokes) equations. Turbulence is modeled using a k- approach, not only at the clear fluid region (outside the porous media) but also inside the porous media. The model has been validated using laboratory data of free surface time evolution in a fish tank containing a porous dam. Numerical simulations were calibrated by adjusting the porous flow empirical coefficients for two granular material characteristics.Sensitivity analysis of porous parameters has also been performed. The model is proven to reproduce with a high degree of agreement the free surface evolution during the seeping process. Simulations of a three- dimensional porous dam breaking problem has been studied, showing the excellent performance of the model in reproducing fluid patterns around a porous structure. The model is powerful tool to examine the near-field flow characteristics around porous structures in three dimensional flow conditions.

【 授权许可】

Unknown