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See GL #1433 Applies corrections to turbulence kinetic energy equation and turbulence viscosity field for incompressible multiphase flow cases. Turbulence kinetic energy is over-predicted in VOF solvers at the phase interface and throughout the water column in nearly-potential flow regions beneath surface waves. This fvOption applies corrections based on the references: Buoyancy source term in turbulence kinetic energy equation: Devolder, B., Rauwoens, P., and Troch, P. (2017). Application of a buoyancy-modified k-w SST turbulence model to simulate wave run-up around a monopile subjected to regular waves using OpenFOAM. Coastal Engineering, 125, 81-94. Correction to turbulence viscosity field: Larsen, B.E. and Fuhrman, D.R. (2018). On the over-production of turbulence beneath surface waves in Reynolds-averaged Navier-Stokes models J. Fluid Mech, 853, 419-460 Example usage: multiphaseStabilizedTurbulence1 { type multiphaseStabilizedTurbulence; active yes; multiphaseStabilizedTurbulenceCoeffs { // Optional coefficients lambda2 0.1; // A value of 0 sets the nut correction to 0 Cmu 0.09; // from k-epsilon model C 1.51; // model coefficient from k-omega model alpha 1.36; // 1/Prt } } Thanks go to the Turbulence Technical Committee, and the useful discussions with and code testing by Bjarke Eltard-Larsen and David Fuhrman (Technical University of Denmark).