RANS SIMULATION OF VISCOUS NONLINEAR WAV ES AROUND COASTAL STRUCTURES

Abstract eng:
A Reynolds-Averaged Navier-Stokes (RANS) numerical method was employed for time-domain simulation of fully nonlinear wave reflection, diffraction, and refractions over submerged coastal structures. Computations were performed first for fully nonlinear waves in a two -dimensional wave tank to illustrate the capability of the RANS method for the generation and propagation of viscous nonlinear waves. Time-domain simulations were then performed for the propagation and transformation of fully nonlinear waves over a submerged trapezoidal shelf. The computed wave profiles were compared with the experimental data to demo nstrate the accuracy of the present simulation results. Finally, the chimera RANS method was employed for time-domain simulations of nonlinear wave refraction and diffraction over an elliptic shoal.

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