Marine and Offshore CFD Simulation

With Fluent 16.0, engineers now have access to the following enhancements:

  • A re-organized user interface to make the selection of the appropriate interface model and related options for a given VoF application more intuitive and less error-prone
  • A new modified compressive scheme to give the highest resolution possible of free surfaces for different types of VoF applications
  • A variable time-stepping feature for implicit VoF that allows time steps to be adjusted automatically for a broader range of VoF applications to speed up transient free surface applications
  • An ability to model random wave patterns by various methods to allow for more realistic simulations of marine applications such as ship design and oil skimming
  • A variety of new numerical treatments to help provide more robust solutions to challenging applications where absolute pressures can become negative
  • A new interfacial numerical treatment to improve the accuracy of predicted free surface locations on meshes of varying quality, which provides an excellent alternative when geometric reconstruction is not feasible

In the offshore industry, it is common to analyze hydrodynamics and wave impact using potential flow solvers to assess wave loading and buoyancy dynamics. But shipping and offshore engineers designing complex oil platforms, ships and other marine structures often also rely on 3-D Computational Fluid Dynamics (CFD) simulation to model and accurately predict

  • Ship drag, trim & sinkage and dynamic motion in waves
  • Wave loading on offshore structures
  • “Green water behavior,” which occurs when a large quantity of water accumulates on a ship’s deck as a result of massive waves from storms, and often leads to equipment damage

Watch the step-by-step demonstration of how to use ANSYS Fluent to predict hydrodynamic forces and green water phenomena resulting from an oceanic wave hitting an offshore platform

ANSYS solutions offer a complete range of fluid dynamics and marine simulation tools for shipping and offshore product designers:

  • Rapid and high quality meshing for complex offshore, naval and marine applications
    • Simulation capabilities for a wide range of waves, including shallow water, nonlinear oceanic, and tsunami waves
    • Wave superposition capabilities
  • Accurate and fast CFD simulation of waves and their interaction with offshore platforms, ships, and other marine structures
  • Ability to connect 3-D CFD simulation to simulation tools that predict the behavior of moored and/or connected systems subject to random sea states

Flow of waves around a ship hull

Flow of waves around a ship hull

Simulation of wave impact on an offshore platform

Simulation of wave impact on offshore platform predicting both wave loading on offshore structure and green-water behavior