This work is devoted to the development of a new hybrid VOF-IBM method for simulation freezing liquid films and drops. The VOF IBM methods are coupled with temperature equation be able solve icing front, dilatation induced by density difference between ice as well drop deformation balance surface tension gravity. numerical simulations validated comparison theoretical solutions experimental obse...

Abstract Impact spreading of droplets in spray coating of paper was investigated using numerical simulation based on a volume-offluid (VOF) model. The results include the effects of droplet size, droplet impact velocity, liquid viscosity, liquid surface tension and paper web velocity on droplet spreading. Pressure and strain rate fields as well as timescales of spreading are reported. The resul...

Numerical simulations of head-on collisions of water droplets at various Weber numbers have been performed. The Navier-Stokes equations are solved by using a finite-volume formulation on a fixed grid with a two-step projection method. Free surfaces are tracked by a technique called “volume-of-fluid”(VOF). A continuum surface force(CSF) model is used to calculate the surface tension force. Both ...

 A VOF-CSF model is developed to model slug flow in capillary channels  Non-uniform mesh is employed to reduce the simulation expenses  A moving reference frame is set moving along or opposite to the gas slug to eliminate the spurious current  The calculated liquid film thickness, slug velocity, and circulation flow ahead the gas slug are all agree very well with literatures Approach and Im...

This paper presents an all-Mach method for two-phase inviscid flow in the presence of surface tension. A modified version Hartens–Lax–van Leer Contact (HLLC) solver is developed and combined first time with a widely used volume-of-fluid (VoF) method: compressive interface capturing scheme arbitrary meshes (CICSAM). novel combination yields both HLLC shock as well accurate liquid–gas tracking ch...

We formulate a general multiphase model representing water-bubble mixture fluid and multi-component bubble populations. An enhanced 2-DV VOF model with a k− turbulence closure is used to model the mixture fluid phase. The bubble phase is governed by the advection-diffusion equations of the gas molar concentration and bubble intensity for groups of bubbles with different sizes. The initial bubbl...