Modelling viscous effects in offshore flow problems: A numerical study

Hendrik Jan Lubbertus van der Heiden

Research output: ThesisThesis fully internal (DIV)

91 Downloads (Pure)


The calculation tool ComFLOW, developed at the University of Groningen, is traditionally used to compute forces that result from wave impacts on offshore construction, whether it is a dike or the deck of a ship. ComFLOW is therefore a promising tool for engineers working in the offshore industry and having an interest in computing forces due to fluid flow phenomena.
This thesis describes how the software tool ComFLOW can be extended to model the more subtle viscous effects that appear in fluid flows. Firstly, the forces acting on arbitrarily shaped objects that are immersed in a rectangular computational grid need to be accurately computed. In this thesis the range of applicability of existing models is extended and the resulting method is verified. Secondly, the physical phenomenon of turbulence is modelled. Several approaches to turbulence modelling are presented, derived, compared and verified. Finally, the combined methodology to modelling viscous flow effects that has been implemented in ComFLOW is validated for the phenomenon of sloshing water motion in specific ship hull openings, so-called moonpools.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • University of Groningen
  • Veldman, Arthur, Supervisor
  • Luppes, Roel, Co-supervisor
Award date22-Mar-2019
Place of Publication[Groningen]
Print ISBNs978-94-034-1195-8
Electronic ISBNs978-94-034-1194-1
Publication statusPublished - 2019

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