Numerical Modeling of Interactions between Solitary Waves and Floating Breakwaters

Document Type : Regular Article


1 Department of Mechanical Engineering, Faculty of Engineering, Istanbul Aydin University, Istanbul 34295, Turkey

2 Department of Mechanical Engineering, Faculty of Mechanical Engineering, Yildiz Technical University, Istanbul 34349, Turkey

3 Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand

4 National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand



In the current numerical work, a 2D wave tank has been planned to explain the shared impacts among three different solitary waves and three different floating breakwaters by applying Reynolds-Averaged Navier-Stokes models and the volume of fluid method. Three dissimilar floating breakwaters (i.e., square breakwater, circular breakwater, and modified breakwater) were chosen. A total of eighteen cases were investigated, including three different floating breakwaters, a solitary wave (SW) with three different wave heights, and two different densities of floating breakwaters. We achieved the production of a solitary wave by moving a wave paddle (WP) and the motion of floating breakwater in two various directions by applying two different codes as user-defined functions. The dynamic mesh technique has been employed for re-forming mesh during the motion of the wave paddle and the floating breakwater. The numerical calculations have been confirmed by some numerical, analytical, and experimental case studies. First, the generation of a SW using the WP movement and the free motion of a heaving round cylinder on the free surface of motionless water were modeled and validated. Additionally, the effects of various parameters, including floating breakwater shape, floating breakwater density, and solitary wave height, on the hydrodynamic performances of the floating breakwater, the floating breakwater’s motions, and the free-surface elevation were considered under various conditions.


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Volume 15, Issue 6 - Serial Number 67
November and December 2022
Pages 1675-1691
  • Received: 11 March 2022
  • Revised: 27 June 2022
  • Accepted: 28 June 2022
  • Available online: 07 September 2022