An improved passive wave absorption technique for fnpt-ns solver

Junxian Wang, Jinghua Wang, Shiqiang Yan, Qingwei Ma, Guihua Xia

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The paper presents an improved passive wave absorber for numerically modelling extremely wave. The development is driven by the challenge on effectively absorbing the undesirable wave, especially the waves with large wavelength, in the numerical wave tanks (NWTs). The developed absorber is adopted by the hybrid model, qaleFOAM, which combines a two-phase Navier-Stokes model (NS) and the fully nonlinear potential theory (FNPT) using the spatially hierarchical approach. The former governs a limited computational domain, where the viscous effects are significant, and is solved by using OpenFOAM/InterDyMFoam. The latter covers the rest of the domain and solved by using the Quasi Lagrangian Eulerian Finite Element Method (QALE-FEM). The accuracy of the qaleFOAM with the new self-adaptive technique is demonstrated by comparing its prediction with experimental results, in which extreme focusing waves are considered. The effectiveness of the wave absorber is assessed by comparing with the conventional damping technique.

Original languageEnglish
Title of host publicationProceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019
EditorsJin S. Chung, Odd M. Akselsen, HyunWoo Jin, Hiroyasu Kawai, Yongwon Lee, Dmitri Matskevitch, Suak Ho Van, Decheng Wan, Alan M. Wang, Satoru Yamaguchi
PublisherInternational Society of Offshore and Polar Engineers
Pages3066-3072
Number of pages7
ISBN (Print)9781880653852
Publication statusPublished - 2019
Externally publishedYes
Event29th International Ocean and Polar Engineering Conference, ISOPE 2019 - Honolulu, United States
Duration: 16 Jun 201921 Jun 2019

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume3
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference29th International Ocean and Polar Engineering Conference, ISOPE 2019
Country/TerritoryUnited States
CityHonolulu
Period16/06/1921/06/19

Keywords

  • Extreme wave
  • FNPT
  • QaleFOAM
  • Viscous models
  • Wave absorption

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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