APPLICATION OF THE MODIFIED WEAKLY COMPRESSIBLE SPH METHOD TO THE 3D TURBULENT WAVE BREAKING IMPACT

作者：Varnousfaaderani Mahmoud Rostami^*; Ketabdari Mohammad Javad^*

来源：Transactions of Famena, 2016, 40(1): 69-86.

• Weakly Compressible SPH
• Modification of Kernel
• Modification of Kernel Gradient
• 3D Wave Impact

In this paper, the mesh-less weakly compressible Smoothed Particle Hydrodynamics (SPH) method was used to solve the continuity and momentum equations with laminar viscosity and the sub-particle scale (SPS) turbulence model. To correct the pressure field and improve the accuracy of free surface, modification of the kernel and its gradient is applied to weakly compressible SPH. The modified method, namely the mSPH-T-K, was also equipped with periodic smoothing of the density using the modified kernel. To validate the modified model, the pressure field and the wave front position of the 2D dam break flow were compared with those of experimental data, the standard SPH method and the mSPH-T method, which is the turbulence SPH method without modification of the kernel and its gradients. Finally, a 3D wave impact was simulated using the mSPH-T-K method. A comparison of results with experimental data showed that this model is a powerful tool for the simulation of complicated free surface flows with large deformations and impact.

• 出版日期2016