We propose a practical numerical framework for free surface flows with surface tension force. The numerical framework consists of the CLSVOF (coupled level set and volumeof-fluid) method, the THINC/WLIC (tangent of hyperbola for interface capturing/weighted line interface calculation) scheme, multi-moment methods (CIP-CSL and VSIAM3) and the density-scaled CSF (continuum surface force) model. W...

A vortex is a flow phenomenon that is very commonly observed in nature. More than a century, a vortex ring that forms during drop splashing has caught the attention of many scientists due to its importance in understanding fluid mixing and mass transport processes. However, the origin of the vortices and their dynamics remain unclear, mostly due to the lack of appropriate visualization methods....

We simulate the onset and evolution of the earliest splashing of an infinite cylindrical liquid drop on a smooth dry solid surface. A tiny splash is observed to be emitted out of the rim of the lamella in the early stage of the impact. We find that the onset time of the splash is primarily dependent on the characteristic timescale, which is defined by the impact velocity as well as the drop rad...

Splashing is the main atomization source for a jet impinging on liquid layer. Increased understanding of splashing rainfall characteristics can help to reduce hazard flood discharge in hydraulic engineering. In this study, spatial distribution caused by nappe flow downstream water cushion was experimentally investigated. Effects factors impingement velocity, unit discharge, and water-cushion de...

The splashing of water drops on a soil surface is the first step of water erosion. There have been many investigations into splashing-most are based on recording and analysing images taken with high-speed cameras, or measuring the mass of the soil moved by splashing. Here, we present a new aspect of the splash phenomenon's characterization the measurement of the sound pressure level and the sou...

We propose novel third-order less oscillatory and diffusive compact stencil-based upwind schemes for the approximation of continuity equation. The proposed are based on constrained interpolation profile-conservative semi-Lagrangian schemes. An important feature is that functions constructed using only variables within one cell (a average two boundary values). Furthermore, have accuracy also osc...