Violent Overtopping of Waves at Seawalls
Numerical Simulation
The Numerical team, based in the Centre for Mathematical Modelling and
Flow Analysis at Manchester Metropolitan University, have been developing
two numerical prediction tools, AMAZON-SC and AMAZON-CC, as part of the
VOWS project.
AMAZON-CC
is a sophisticated 2D plan shallow water solver which incorporates Cartesian
cut cell techniques for moving boundarys and the surface gradient method
(SGM) treatment for modelling the bathymetry. The method has been
applied to a number of test cases including both one dimensional simulations
of the Edinburgh wave flume and two dimensional simulations of the wave
basin experiments conducted at HR-Wallingford.
Simulation of the VO12000 wave basin experiment.
AMAZON-SC
- on the other hand, solves the incompressible two fluid Euler equations
using a Cartesian cut cell based surface capturing method. The scheme
solves for the velocity, density and pressure in both fluids and is capable
of modelling the formation and propagation of overtopping jets. It
has been applied to a number of rigorous test cases including a set based
on the Edinburgh wave flume experiments.
Random wave interaction with a 10:1 battered sea wall.
Animations
A short flash movie showing some
preliminary results from the two schemes is available here.
David Ingram