Comparative Study on Water Impact Problem

Liang Yang, Hao Yang, Shiqiang Yan, Qingwei Ma, Maria Bihnam

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

This paper presents a comparative numerical study for the water impact problems due to dropping of triangular wedges or ship sections. In the numerical investigation, both the dynamic mesh technique and immersed boundary method adopting fixed Cartesian grids have been adopted in order to conform to the motion of the structure. For the former, a multiple-phase solver with the volume of fluid for identifying the free surface is implemented. In the simulation using this method, both the compressible and incompressible solvers have been considered to explore the role of the compressibility. For the latter, an in-house immersed boundary method, in which a generalized equation is developed to govern the motion of different phases (air, water and solid) and a level-set method is adopted to identify the free surface & body surfaces. Different cases with different dropping speed have been considered in the investigation and the results are compared with the experimental data for the comparative study on the water impact problem.
Original languageEnglish
Title of host publicationThe 26th International Ocean and Polar Engineering Conference, 26 June-2 July, Rhodes, Greece
PublisherInternational Society of Offshore and Polar Engineers
Number of pages8
ISBN (Electronic)978-1-880653-88-3
Publication statusPublished - Jun 2016

Publication series

NameProceedings of Annual International Ocean (Offshore) and Polar Engineering Conference (ISOPE)
PublisherISOPE
ISSN (Print)1098-6189

Keywords

  • Water impact
  • comparative study
  • immersed boundary method
  • CFD

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