CFD modelling coupled with floating structures and mooring dynamics for offshore renewable energy devices using the Proteus simulation toolkit

Tristan de Lataillade, Aggelos Dimakopoulos, Christopher Kees, Lars Johanning, David Ingram, Tahsin Tezdogan

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Abstract

In this work, the coupling of novel opensource tools for simulating two-phase incompressible flow problems with fluid-structure interaction and mooring dynamics is presented. The open-source Computational Fluid Dynamics (CFD) toolkit Proteus is used for the simulations. Proteus solves the two phase Navier-Stokes equations using the Finite Element Method (FEM) and is fully coupled with an Arbitrary Lagrangian-Eulerian (ALE) formulation for mesh motion allowing solid body motion within the fluid domain. The multi-body dynamics solver, Chrono, is used for calculating rigid body motion and modelling dynamics of complex mooring systems. At each time step, Proteus computes the forces from
the fluid acting on the rigid body necessary to find its displacement with Chrono which will be used as boundary conditions for mesh motion. Several verification and validation cases are presented here in order to prove the successful coupling between the two toolkits aforementioned. These test cases include wave sloshing in a tank, floating body dynamics under free and wave-induced motion for different degrees of freedom (DOFs), and mooring dynamics using beam element theory coupled with rigid body dynamics and collision detection. The successful validation of each component shows the potential of the coupled
methodology to be used for assisting the design of offshore renewable energy devices.
Original languageEnglish
Number of pages11
Publication statusPublished - 30 Aug 2017
Event12th European Wave and Tidal Energy Conference - University College Cork, Cork, Ireland
Duration: 27 Aug 20171 Sep 2017
Conference number: 12
http://www.ewtec.org/ewtec-2017/
http://www.ewtec.org/

Conference

Conference12th European Wave and Tidal Energy Conference
Abbreviated titleEWTEC
CountryIreland
CityCork
Period27/08/171/09/17
Internet address

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Keywords

  • computational fluid dynamics
  • finite element
  • fluid structure interaction
  • offshore renewable energy
  • mooring dynamics

Cite this

Lataillade, T. D., Dimakopoulos, A., Kees, C., Johanning, L., Ingram, D., & Tezdogan, T. (2017). CFD modelling coupled with floating structures and mooring dynamics for offshore renewable energy devices using the Proteus simulation toolkit. Paper presented at 12th European Wave and Tidal Energy Conference, Cork, Ireland.