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Generation of Water Waves Using Momentum Source Wave-Maker Applied to a RANS Solver

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  • Xing Feng
  • Wanqing Wu

Abstract

Nowadays, as the development of Computational Fluid Dynamics (CFD) and the numerical wave tank (NWT) has advanced, numerical analysis has become increasingly useful and powerful for the ship designing and ship hydrodynamics. In this study, a momentum source wave-maker and an analytical relaxation wave absorber were embedded into 2D RANS equation model with RSM turbulence closure scheme to establish the NWT for ship designing and hydrodynamics. The VOF (volume-of-fluid) method was applied to accurately capture the water free surface. The body force-weighted scheme is chosen for pressure interpolation and the second order upwind scheme for discretization of the momentum equation. In order to calculate convection and diffusion fluxes through the control volume faces, PISO algorithm is adopted for pressure-velocity coupling. The momentum source function for wave generation and the analytical relaxation function for wave absorption were deduced for constructing the NWT (numerical wave tank). The proposed NWT was then validated by the laboratory measurements of Umeyama and the analytical solution, indicating that the constructed NWT is effective and accurate.

Suggested Citation

  • Xing Feng & Wanqing Wu, 2019. "Generation of Water Waves Using Momentum Source Wave-Maker Applied to a RANS Solver," Mathematical Problems in Engineering, Hindawi, vol. 2019, pages 1-11, May.
    • Handle: RePEc:hin:jnlmpe:1308960
    DOI: 10.1155/2019/1308960
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