Preventing the added-mass instability in fluid-solid interaction for offshore applications

Arthur E.P. Veldman, Henk Seubers, Peter van der Plas, Matin Hosseini Zahraei, Peter Wellens, Rene Huijsmans

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

Simulating the hydrodynamics of deformable, floating structures using a partitioned strategy poses a major challenge when the ratio of the added mass to the structural mass is considerate. Existing computational procedures for fluid-structure interaction become less efficient or even unstable. In these situations, it is advisable to modify the coupling to allow the fluid to respond better to the solid motions. A simultaneous solution of the equations governing fluid and solid-body would be a stable choice but is often not feasible. Usually the numerical problems are taken care of with subiterations between fluid and structure, but their convergence can be slow. In this paper we present a more powerful, quasi-simultaneous approach, which tries to mimic a fully simultaneous coupling in an affordable way. It makes use of a simple approximation of the body dynamics, based on the (6 DOF) solid-body modes and the main elastic modes of the structure. The method will be demonstrated in offshore practice, with a falling life boat, a floating CALM buoy, an elastic membrane and a rubber gate.
Original languageEnglish
Title of host publicationProceedings of the ASME 37th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2018)
Subtitle of host publicationVolume 2: CFD and FSI
Place of PublicationNew York, NY, USA
PublisherASME
Number of pages10
Volume2
ISBN (Print)978-0-7918-5121-0
DOIs
Publication statusPublished - 2018
EventOMAE 2018: 37th International Conference on Ocean, Offshore & Arctic Engineering - Madrid, Spain
Duration: 17 Jun 201822 Jun 2018
https://www.asme.org/events/omae

Conference

ConferenceOMAE 2018
Abbreviated titleOMAE 2018
CountrySpain
CityMadrid
Period17/06/1822/06/18
Internet address

Keywords

  • fluids
  • ocean engineering

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