We present and analyse two new Volume-of-Fluid (VOF) reconstruction algorithms that approximate the interface separating two immiscible fluids as a linear function in each grid cell (PLIC Piecewise Linear Interface Calculation). The first one is based on two simple geometrical criteria for the reconstruction of a linear interface, the second one minimizes a distance functional to find the plane...

Vapor-venting microchannel heat exchangers are promising because they address the problems of high pressure drop, flow instability, and local dryout that are common in conventional two-phase microchannel heat sinks. We present a 3D numerical simulation of the vapor-venting process in a rectangular microchannel bounded on one side by a hydrophobic porous membrane for phase-separation. The simula...

Abstract This paper, aiming at the water-exit process of vehicle with cavitation, based on moving domain method coupled SDOF (six degrees freedom) solver, using VOF (volume fluid) multiphase model and Schnerr-Sauer cavitation model, carrying out numerical simulation research multi-conditions. Comparing vertical launch vehicles different Ca (cavitation number) cases, sudden decrease in number is...

Abstract This paper proposes a combined 1D-3D approach for the lubrication analysis of standard transmission including two helical gears. A lumped parameter model entire system is developed to predict flow distribution within circuit and localized pressure drops along lines. considers geometrical features real system, it combines experimental characteristic curves main hydraulic components. The...

We present a numerical study of emulsions in homogeneous and isotropic turbulence at $Re_\lambda=137$. The problem is addressed via Direct Numerical Simulations (DNS), where the Volume Fluid (VOF) used to represent complex features liquid-liquid interface. consider mixture two iso-density fluids, fluid properties are varied with goal understanding their role modulation, particular volume fracti...

A two-dimensional liquid metal droplet moving into magnetic field gradient regions in a vacuum space in the absence of gravity has been simulated in VOF-CSF method. The general one-fluid VOF model for tracking free surfaces, and associated CSF model for applying surface tension to free surfaces are formulated. The calculations show us that the droplet encounters strong magnetohydrodynamics (MHD...

Solutions that aim to reduce water production in heavy oil wells have led the design of devices known as rate-controlled (RCP) autonomous inflow-control device (AICD) valves, which are placed well completions and autonomously open with inflow close by choking flow. These devices, based on Bernoulli’s principle, use a levitating disk chokes flow phase lowest resistance. This study proposes numer...

Double emulsion droplets generation is convenient for drug delivery applications since the core-shell template has ability to increase success of target and release drug. In this study, modified flow-focusing microfluidics device proposed generate double with high monodispersity throughput, satisfying industrial needs. The W/O/W (water-in-oil-in-water) encapsulation a common combination in deli...