SedFOAM

beach, dike

• velocity
• pressure
• volume fractions of 3 phases (air, water and sediment)
• turbulence: k & ε or omega

• Mass conservation & Momentum conservation for each of fractions.
• Rheological closures
• Turbulence closure (customized mixture k-ε model)
• Roughness closure

• traditional boundary conditions for RANS solvers
• the sediment bed can be made part of the computational domain

cartesian

unstructured FVM

• Can deal with very detailed current-sediment interactions
• Useful as numerical laboratory to generate data which cannot be measured experimentally
• A free surface version is also available.

• high-resolution required around the sediment bed interface, makes computation heavy and thus limits the applications to small scale problems

Parameters:

1. Fluid density & viscosity
2. Particle density
3. Settling velocity
4. Nikuradse roughness
5. Rheology parameters

Procedure

• 1-2: usually known
• 3-5: start from known, modify if necessary

testcases available on the GitHub server