Numerical study of seabed response and liquefaction around a jacket support offshore wind turbine foundation under combined wave and current loading

The seabed instability induced by the transient liquefaction when exposed to wave-current may threaten safety of offshore structures. In this study, Reynolds-averaged Navier–Stokes (RANS) equations with k–ε turbulence model were used imitate fluid dynamics, and Biot's poro-elastic theory was simulate response. An in-house solver (porous-fluid–seabed–structure interactions–field operation manipulation) integrating flow finite volume method developed. present confirmed published experimental results then analyze dynamic process fluid–seabed–structure interactions as well seafloor around jacket foundation under loading. simulated showed that depth range for area tended increase at first declined wave propagated forward in absence current. addition, demonstrated current same orientation greater than without It is worth mentioning downstream piles more prone upstream existed.