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...

In this study, the primary breakup of a high-speed diesel jet is investigated using CFD methodology that combines an LES model with VOF technique for free surface capture. Inner-nozzle turbulence and cavitation are simplified as sinusoidal radial velocity given amplitude frequency. The ligament droplet formation process captured, liquid disturbed by velocity, umbrella-shaped crests created. Mea...

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 Deposition of solid particles in the stormwater sewers reduces discharging capacity, causing inundation. A sediment invert trap (SIT) is an option that can be installed at bottom sewer drain to intercept flowing particles. In present study performance rectangular SIT were analyzed experimentally and computationally. Variation particle trapping efficiency fitted open channel flume has b...

This study provides a quantitative analysis to investigate the effects of cough intensity and initial mucus thickness on transport clearance in mouth-to-trachea airway geometry using an experimentally validated Volume Fluid (VOF) based multiphase model. In addition, accuracy simplifying as Newtonian fluid is also quantified by comparisons efficiencies with simulations realistic shear-thinning n...

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...