A hybrid VOF–Lagrangian method for simulating the aerodynamic breakup of liquid droplets induced by a traveling shock wave is proposed and tested. The droplet deformation fragmentation, together with subsequent mist development, are predicted using fully three-dimensional computational fluid dynamics model following unsteady Reynolds-averaged Navier–Stokes approach. main characteristics aerobre...

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 work presents two unsplit geometric VOF schemes that extend the two-dimensional cellwise conservative (CCU) scheme (Comminal et al. (2015) [49]) to three dimensions. The novelty of 3D-CCU lies in representation streaksurfaces donating regions by polyhedral surfaces whose vertices are calculated with 4th order Runge-Kutta scheme. Moreover, advected liquid volumes computed using a truncation...

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...