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Experimental and numerical study of regular waves past a submerged breakwater

  • Bi-jin Liu (刘必劲)
  • Du Cheng (程都)
  • Zhao-chen Sun (孙昭晨)
  • Xi-zeng Zhao (赵西增)Email author
  • Yong Chen (陈勇)
  • Wei-dong Lin (林伟栋)
Article
  • 11 Downloads

Abstract

Laboratory experiments have been performed to investigate hydrodynamics around a submerged breakwater due to regular incident waves. An in-house code, a Constrained Interpolation Profile (CIP)-based model is also employed to simulate this process. The model is built on a Cartesian grid system with the Navier-Stokes equations using a CIP method for the flow solver, and employs an immersed boundary method (IBM) for the treatment of the solid body boundary. A more accurate interface capturing scheme, the Tangent of hyperbola for interface capturing/Slope weighting (THINC/SW) scheme, is used to track the free surface. The numerical results are compared with experimental data. Reasonably good agreement is obtained in terms of wave profiles at six measuring stations, flow velocities at three different space locations and pressures of eight points on the surface of the submerged breakwater. Moreover, water mass transfer over the breakwater is discussed using a two-phase VOF model and the wave spectrum is also presented for analysis. It indicates that the present model is capable of accurately predicting the hydrodynamic characteristics of wave over a submerged bar. Furthermore, the experimental data in present work can provide reliable basic data, including wave transformations, velocities and dynamic pressures, for other CFD models validation.

Key words

Submerged breakwater CIP method wave transform VOF method immersed boundary method 

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Copyright information

© China Ship Scientific Research Center 2019

Authors and Affiliations

  • Bi-jin Liu (刘必劲)
    • 1
    • 3
  • Du Cheng (程都)
    • 2
  • Zhao-chen Sun (孙昭晨)
    • 1
  • Xi-zeng Zhao (赵西增)
    • 2
    Email author
  • Yong Chen (陈勇)
    • 2
  • Wei-dong Lin (林伟栋)
    • 2
  1. 1.State Key Laboratory of Coastal and Offshore EngineeringDalian University of TechnologyDalianChina
  2. 2.Ocean CollegeZhejiang UniversityZhoushanChina
  3. 3.School of Civil Engineering and ArchitectureXiamen University of TechnologyXiamenChina

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