Gas-lift pumps are devices for lifting liquid phase incorporating the gas phase to be injected in the bottom of liquid column. They are widely used in various industrial applications such as oil extracting in petroleum industries. Gas-liquid flow being the main part of the flow through these systems, flowing in vertical pipes of gas-lift pumps has different regimes namely bubbly, slug, chur...

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...

Transverse spin angular momentum (SAM) of photon, also known as ‘photonic wheel’, has attracted much attention, owing to its extraordinary properties and broad application prospect. Thus, it is essential flexibly manipulate the transverse SAM in order satisfy different needs. In this article, we design generate a new kind symmetrically modulated hybridly polarized vector optical field (SM-HP-VO...

SUMMARY We investigate numerically some thermomechanical conditions for the development of crustal scale diapirism and convection in a heterogeneous continental crust independently from action regional tectonics. Here, we consider hot crust, with unmolten partially molten domains specific temperature strain-rate dependent power-law rheologies. take advantage volume fluid (VOF) method to capture...

In this paper, an HLLC-type contact preserving Riemann solver for incompressible two-phase flows using the artificial compressibility formulation is presented. This improvement over previous HLLC-VOF (Bhat and Mandal, 2019). work, unlike formulation, variation of volume fraction taken into account when calculating eigenvalues eigenvectors. Hence, equations intermediate states wave speed are clo...

The breakup dynamics of a capillary bridge on hydrophobic stripe between two hydrophilic stripes is studied experimentally and numerically using direct numerical simulations. formed from an evaporating water droplet wetting three neighboring chemically patterned surface. By considering the process in phase space representation, can be evaluated without uncertainty determining precise time. simu...

We present a fully compressible single-fluid volume of fluid (VOF) solver with phase change for high-speed flows, where the atomization liquid can occur either by aerodynamics or effect local pressure. The VOF approximation among non-miscible (non-condensable gas) and mixture two fluids (liquid vapor) represents core jet its atomization. A barotropic model is used in combination equation state ...

During the construction of tunnels in saturated water-bearing sand stratum, water and mud inrush disasters often occur. Grouting is most convenient effective method to improve mechanical properties soil prevent groundwater seepage. The reasonableness Discrete Element Method (DEM) contact parameters verified by comparing repose angle test with that obtained simulations. grouting model stratum wa...