Simulation of irregular waves over submerged obstacle on a NURBS potential numerical wave tank
AUTOR(ES)
Abbasnia, Arash, Ghiasi, Mahmoud
FONTE
Lat. Am. j. solids struct.
DATA DE PUBLICAÇÃO
2014
RESUMO
In this paper, a fully non-linear three-dimensional Numerical Wave Tank (NWT) is developed for studying propagation and scattering of non-linear random sea wave over bottom submerged bars. The simulation of fully non-linear free-surface is based on Non-Uniform Rational B-Spline formulation (NURBS) as a novel approach and Mixed Eulerian-Lagrangian method (MEL). High-order boundary integral equation is used to solve the Laplace equation in the Eulerian frame. To update the free-surface, time marching approach including material node method and fourth order Runge-Kutta time integration scheme is used. To obtain appropriate numerical solutions for wave propagation problem, damping zone is set at the downstream. Also, the NURBS approximation is employed to evaluate the velocity of the free-surface particles. Propagation of regular and irregular waves in a NWT is investigated and compared with the available experimental and numerical data. Transmission of the random sea wave over submerged bars is also compared with the experimental and prior numerical studies.
Documentos Relacionados
- Nonlinear wave transmission and pressure on the fixed truncated breakwater using NURBS numerical wave tank
- Rotational Solitary Wave Interactions over an Obstacle
- Absorbing boundary conditions for numerical simulation of waves
- Numerical simulation of three-dimensional flows over aerospace configurations.
- Numerical simulation of wind waves on the Río de la Plata: evaluation of four global atmospheric databases