Wet Dam-Break simulation using the SPS-LES turbulent contribution on the WCMPS method

What is it about?

The paper analyzes the contribution of the sub-particle-scale Large Eddy Simulation (SPS-LES) turbulent model on the dynamic behavior of the Weakly-Compressible Moving Particle Semi-implicit method (WCMPS). To search a robust WCMPS method configuration, the next models are tested: two pressure gradient models, two Laplacian models and the constrained stabilization technique through the control adjustment of the particle velocity by Xu and Jin [48]. Then, for these combinations the influence of the SPS-LES turbulent dynamic contributions on the WCMPS method is analyzed. The WCMPS resultant configurations are applied to represent the physics of two different isolated green water events, produced by incoming bores that were generated with the two-dimensional wet dam-break approach. Numerical results captured well the evolution of the green water events, indicating that the WCMPS method can be suitable tool to represent the complex physics of these phenomena, including the breaking features of flow. Moreover, it is shown that even though turbulence is a three dimensional phenomenon, turbulent contribution can be observable on the velocity field in two dimensions, having a considerable contribution on the adequate representation of green water amounts.

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Why is it important?

The manuscript, it is applied the Weak-Compressible version of the Moving Particle Semi-implicit (WC-MPS) method to the Wet Dam Break problem to investigate green water events, comparing numerical results with experimental snapshots. To achieve a robust WC-MPS configuration and study the dynamic behavior of the turbulent contribution, the constrained stabilization technique by Xu et al (2018), two pressure gradient models and two divergence models, are analyzed. Our results show that through the robust WC-MPS configurations it is possible to observe turbulent contributions on global behavior and velocity field.