Open source Field Operation And Manipulation
http://openfoam.org/
OpenFOAM® is an open source library of applications and solvers for simulating computational continuum mechanics (CCM) (Weller et al., 1998). Solvers for the simulation of computational fluid dynamics (CFD) form a significant branch in the OpenFOAM® library. It includes the solver interFoam, a Navier-Stokes (NS) equations solver following an Eulerian mesh-based method for two incompressible, isothermal immiscible fluids. The interface between water and air (the two fluids of interest here) and its advection is obtained by the Volume-of-Fluid (VOF) phase-fraction based interface capturing approach described by Berberović et al. (2009).
Developed by: CFD Direct and the open source community for the OpenFOAM Foundation
beach, dike
velocity
pressure
volume fraction
k & ε/w
RANS, 2-phase (air and waster) flow
Continuity equation
Momentum conservation equation
Interface advection equation (free surface)
Wave generation and absorption boundary conditions: olaFlow (Higuera et al., 2018)
Measured data:
foreshore bathymetry, dike geometry
hydrodynamic conditions
water level
wave conditions (Hm0, Tp, Tm-1,0,…)
For validation:
free surface elevations,
(offshore) wave conditions (Hm0, Tp, Tm-1,0,…),
TKE (difficult),
wave impact force on storm wall,
layer thickness and velocity,…
carthesian
unstructured FVM
Very shallow foreshore
most of the waves are broken
very turbulent area
Complex geometry of the dike
complex 3D/2DV flow on the dike, small flow depths
not possible accurately with depth-averaged (2DH/1DH) wave models
NS most complete equations describing the physics
Most accurate wave structure interactions compared to DualSPHysics and SWASH for the case of sea dikes with very shallow foreshores.
Time-consuming (mesh-generation and computational time)
Parameters 1.Initial grid resolution 2.Various model settings, discretisation schemes, solver settings,...
Comparison of
hydrodynamics in the surf/swash zone with measurements
wave overtopping over and wave forces on storm wall
Validation test cases available
Flume experiments (wave flume UGent-AWW and wave basin FHR): 2017
Field measurements (artificial dike): winter 2017-2018
Flume experiments (Deltares Delta-Flume large-scale experiments: WALOWA)
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