2019/12/04 by Fernando Zorrilla, Johannes Sappl, Zorrilla, Fernando +5
Engineering · Materials Science · #Computational Physics (physics.comp-ph) #FOS: Computer and information sciences #FOS: Physical sciences #Fluid Dynamics Simulations and Interactions #Graphics (cs.GR) #Modular Robots and Swarm Intelligence #Surface Modification and Superhydrophobicity
paper · pdf · doi:10.48550/arxiv.1912.01942
openalex publication_date 2019/12/04 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
Surface tension has a strong influence on the shape of fluid interfaces. We propose a method to calculate the corresponding forces efficiently. In contrast to several previous approaches, we discriminate to this end between surface and non-surface SPH particles. Our method effectively smooths the fluid interface, minimizing its curvature. We make use of an approach inspired by Monte Carlo integration to estimate local normals as well as curvatures, based on which the force can be calculated. The technique is applicable, but not limited to 2D and 3D simulations, and can be coupled with any common SPH formulation. It outperforms prior approaches with regard to total computation time per time step, while being stable and avoiding artifacts.