The present paper, places emphasis on the vorticity induced by wave breaking, which greatly contributes to sediments pick up and suspension as well as to air–water exchange at the wave interface, thus deserving a thorough study. A weakly-compressible smoothed particle (WCSPH) model, coupled with a two-equation model for turbulent stresses, has been employed for this scope. A careful calibration of the SPH’s numerical parameters has been first performed, based on experiments carried out in a sloped wave channel, specifically using wave elevation and velocity data. Once proved the reliable performance of the model, the characteristics of vorticity induced just prior and post breaking for both the cases of a spilling and a plunging wave have been numerically studied. The main and detailed results indicate that for both the types of breakers there is a cause-effect relation observed between the stream wise flow deceleration and the vorticity generation.

中文翻译：

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用SPH数值研究溢流和暴波中的破裂涡特征。

本文着重于波浪破碎引起的涡度，它极大地促进了沉积物的吸收和悬浮以及波浪界面处的空气-水交换，因此值得深入研究。此范围采用了弱压缩的平滑粒子（WCSPH）模型以及湍流应力的两方程模型。首先，根据在倾斜波通道中进行的实验，特别是使用波高和速度数据，对SPH的数值参数进行了仔细的校准。一旦证明了该模型的可靠性能，就对溢流和暴波两种情况下在破裂前后引起的涡旋特性进行了数值研究。