Interaction of water waves and a submerged parabolic obstacle in the presence of a following uniform/shear current using RANS model

Yen Lung Chen, Jing Bo Hung, Shih Lun Hsu, Shih-Chun Hsiao, Yuan Chieh Wu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper simulates regular waves propagating over a submerged parabolic obstacle in the presence of a uniform/shear current using a two-dimensional numerical model, named COBRAS (Cornell Breaking and Structure). The numerical model solves the Reynolds-Averaged Navier-Stokes (RANS) equations and the free surface deformation is tracked using the volume of fluid method (VOF). The capability of the numerical model to simulate regular waves with a uniform or shear current over a constant water depth is first validated with available analytical solutions and experimental data. Comparisons among the experimental data, analytical solutions, and present numerical results show good agreements. Then, regular waves propagating over a submerged parabolic obstacle with a following current are investigated. Detailed discussions including those on the velocity and vorticity fields and the relation between free surface and vorticity are given.

Original languageEnglish
Article number896723
JournalMathematical Problems in Engineering
Volume2014
DOIs
Publication statusPublished - 2014 Jan 1

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Water waves
Water Waves
Navier-Stokes
Numerical models
Vorticity
Free Surface
Analytical Solution
Interaction
Experimental Data
Volume of Fluid Method
Reynolds Equation
Navier Stokes equations
Navier-Stokes Equations
Model
Water
Numerical Results
Fluids

All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Engineering(all)

Cite this

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abstract = "This paper simulates regular waves propagating over a submerged parabolic obstacle in the presence of a uniform/shear current using a two-dimensional numerical model, named COBRAS (Cornell Breaking and Structure). The numerical model solves the Reynolds-Averaged Navier-Stokes (RANS) equations and the free surface deformation is tracked using the volume of fluid method (VOF). The capability of the numerical model to simulate regular waves with a uniform or shear current over a constant water depth is first validated with available analytical solutions and experimental data. Comparisons among the experimental data, analytical solutions, and present numerical results show good agreements. Then, regular waves propagating over a submerged parabolic obstacle with a following current are investigated. Detailed discussions including those on the velocity and vorticity fields and the relation between free surface and vorticity are given.",
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Interaction of water waves and a submerged parabolic obstacle in the presence of a following uniform/shear current using RANS model. / Chen, Yen Lung; Hung, Jing Bo; Hsu, Shih Lun; Hsiao, Shih-Chun; Wu, Yuan Chieh.

In: Mathematical Problems in Engineering, Vol. 2014, 896723, 01.01.2014.

Research output: Contribution to journalArticle

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AU - Wu, Yuan Chieh

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