Numerical Investigation of Flow in Porous Media Around a Mono-Pile under Steady Current

• Published in: Volume 5A: Ocean Engineering
• Main Authors: Zhai, Yanyan, Christensen, Erik Damgaard
• Format: Article in Journal/Newspaper
• Language: English
• Published: The American Society of Mechanical Engineers (ASME) 2022
• Subjects: Mono-pile; Scour protection; Volume-averaged k-ω turbulence model; Porous flow; Arctic
• Online Access: https://orbit.dtu.dk/en/publications/48fb96c8-fd72-47f5-9e1f-8986596e294a; https://doi.org/10.1115/OMAE2022-79002; https://backend.orbit.dtu.dk/ws/files/274717601/OMAE2022_79002_final_version.pdf

The study numerically investigates the three-dimensional (3D) flow features around a mono-pile with scour protection under steady flow condition. A hydrodynamic model based on Volume-averaged Reynolds-averaged Navier-Stokes (VARANS) equations with the Volume-averaged k-ω turbulence closure is developed, which is implemented in OpenFOAM. The numerical model is firstly verified against experiments and known analytical/empirical expressions by simulating simple turbulent flows. Under the steady current, a 3D model using a parabolic transition near the interface is validated against experimental measurements regarding the flow features both inside and outside of the scour protection around a mono-pile. The computed results are reasonably in line with the experiments. The simulations demonstrate the ability of the developed model to evaluate the flow behaviors in scour protection.