Study of global wave repeatability in the new multiphase wave lab (Mwl)

Vladimir Novaković, Juan José Costas, Sebastian Schreier, Olivier Kimmoun, Ashwin Fernandes, Rodrigo Ezeta, Miloš Birvalski, Hannes Bogaert

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

1 Citation (Scopus)

Abstract

The intricate physical mechanisms involved during sloshing impacts in LNG tanks lead to biases in sloshing model tests when the impact loads are predicted. In order to increase the understanding of these biases, a new state-of-the-art facility dubbed the Multiphase Wave Lab (MWL) has been established. In the MWL, impact tests are performed within an autoclave (15 m long x 2.5 m diameter), whose purpose is to provide an accurately controlled environment in which the pressure, temperature and gas composition can be controlled and monitored. Wave impact tests are performed by generating waves in a flume which is located inside the autoclave. In this paper, we present the capabilities of the MWL to control the temperature, ullage pressure and gas composition in the autoclave. We study also the quality of the global flow repeatability by means of a breaking wave which is created with a wave-focusing technique. We quantify the repeatability of the waves with a Sobolevnorm-like criterion on the frequency domain and evaluate the repeatability for different ullage pressures. Preliminary experiments show a good degree of repeatability, in accordance with high-speed recordings of the impacting waves.

Original languageEnglish
Title of host publicationProceedings of the 30th International Ocean and Polar Engineering Conference
PublisherInternational Society of Offshore and Polar Engineers (ISOPE)
Pages2511-2520
ISBN (Electronic)978-1-880653-84-5
Publication statusPublished - 2020
Event30th International Ocean and Polar Engineering Conference, ISOPE 2020 - Virtual, Online
Duration: 11 Oct 202016 Oct 2020

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference30th International Ocean and Polar Engineering Conference, ISOPE 2020
CityVirtual, Online
Period11/10/2016/10/20

Keywords

  • Impact tests scaling
  • LNG
  • Sloshing
  • Wave impacts
  • Wave repeatability

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