TY - JOUR AU - Azorakos, Georgios AU - Larsen, Bjarke Eltard AU - Fuhrman, David R. PY - 2020/12/28 Y2 - 2024/03/29 TI - NEW METHODS FOR STABILIZING RANS TURBULENCE MODELS WITH APPLICATION TO LARGE SCALE BREAKING WAVES JF - Coastal Engineering Proceedings JA - Int. Conf. Coastal. Eng. VL - IS - 36v SE - Waves DO - 10.9753/icce.v36v.waves.19 UR - https://icce-ojs-tamu.tdl.org/icce/article/view/10272 SP - waves.19 AB - <html>Recently, Larsen and Fuhrman (2018) have shown that seemingly all commonly used (both k-omega and k-epsilon variants) two-equation RANS turbulence closure models are unconditionally unstable in the potential flow beneath surface waves, helping to explain the wide-spread over-production of turbulent kinetic energy in CFD simulations, relative to measurements. They devised and tested a new formally stabilized formulation of the widely used k-omega turbulence model, making use of a modified eddy viscosity. In the present work, three new formally-stable k-omega turbulence model formulations are derived and tested in CFD simulations involving the flow and dynamics beneath large-scale plunging breaking waves.<br><br><b>Recorded Presentation from the vICCE (YouTube Link): <a href="https://youtu.be/T2fFRgq3I8E">https://youtu.be/T2fFRgq3I8E</a></b></html> ER -