When a hydrogen or oxygen bubble is created on the surface of an electrode, micro-convective vortex flow due to Marangoni effect generated at bottom in contact with electrode. In order study such phenomenon numerically, it necessary be able simulate tension variations along liquid-gas interface, integrate mass transfer across interface from dissolved species present electrolyte gas phase, and t...

This study investigates the potential of a newly released multi-phase solver to simulate atomisation in an air-blast type atomiser. The 'VOF-to-DPM' was used primary and secondar...

Abstract A newly developed frosting simulation method, p-VOF is applied to simulate the dynamic frost formation on NACA0012 airfoil under strong convection. The method a pseudo VOF of multiphase flow with phase change. By solving simplified mass conservation equation explicitly instead original volume fraction equations in CFD software, efficiency and robustness calculation are greatly improved...

در تحقیق حاضر بر مبنای نتایج حاصل از شبیه سازی cfdرابطه ای برای ضریب انتقال جرم بین فازی در جریان تیلور ارائه شده است. جهت شبیه سازی هیدرودینامیک رژیم تیلور در یک سلول واحد از این جریان از روش vof استفاده شده است. در ادامه انتقال جرم از حباب تیلور به لخته مایع شبیه سازی شده است. در شبیه­سازی­های انجام شده، حباب تیلور با استفاده از یک روش تکراری در یک هندسه متقارن محوری ساکن شده و جریان مایع از ...

Lubricating oil flow characteristics are the primary concern in main reducer of light helicopters. To improve lubricating performance reducer, a special lubrication system is innovatively constructed by adding two oil-guiding tubes to hub output gear, and influence investigated through CFD (computational fluid dynamics) techniques. A model gearbox integrated with VOF (volume fluid) technique wa...

Abstract The melting behavior of a fayalitic slag was investigated with computational fluid dynamics and validated experimental data. A heating microscope employed to perform typical ash (AMB) test, in order gain information about the slag. numerical approach is based on using volume (VOF) method, track interface between gas phases, enthalpy–porosity model, simulate as phase change material (PC...

Developing functional closure models for all the subgrid scale (SGS) physics in large eddy simulation (LES) of turbulent two-phase flows is yet a challenging task due to complicated turbulence-interface interactions. Our recent study (Saeedipour and Schneiderbauer, 2019) has revisited classical viscosity concept proposed new approach include surface tension into viscosity. It revealed an a-prio...