Wave forces and flow field around pile group foundation in China-Maldives Friendship Bridge are investigated with a ComputationalFluid Dynamics (CFD) model. A numerical wave tank is developedbased on the commercial finite volume package FLUENT. Meshsensitivities are conducted to validate the numerical model, and anacceptable time-step is adopted to ensure stability in time-marching.Swells are very common in the location of the Bridge, thus in thismanuscript, regular waves are simulated acting as swells. The waveinteraction with single pile and pile group foundation is studied. Thenumerically calculated wave forces agree quite well with thepredictions from Morison equation. The wave period shows minorinfluence on the values of maximum wave forces under the conditionthat the wave amplitude is unchanged. For the pile group foundation,the wave forces on piles of different locations have phase differencesdue to that the time of wave crest crossing the piles is different. Thisnumerical study confirms that wave height is the key parameter forwave forces on pile group foundation in swell environment.
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