in this research, numerical simulation of a symmetric impact of a 2-d wedge, considering dynamic equations in two-phase flow is taken into account. the two-phase flow around the wedge is solved based on finite volume method and volume of fluid (vof) scheme. the dynamic mesh model is used to simulate dynamic motion of the wedge, thereby the effects of different dynamic meshes in both structured ...

The free surface lattice Boltzmann method (FSLBM) is a combination of the hydrodynamic lattice Boltzmann method with a volume-of-fluid (VOF) interface capturing technique for the simulation of incompressible free surface flows. Capillary effects are modeled by extracting the curvature of the interface from the VOF indicator function and imposing a pressure jump at the free boundary. However, ob...

The volume-of-fluid (VOF) method is one of the most widely used formulations to simulate interfacial and free-surface flows (Scardovelli & Zaleski 1999). In this method, the interface evolution is implicitly tracked using a discrete function, F , whose value represents the volume fraction of the tagged fluid within a cell of the computational mesh. F is a discretized version of the fluid marker...

In this paper, we present extensions, extensive validations and applications of our previously published hybrid volume-of-fluid-based (VOF)model for the simulation of freesurface flow problems. For the solution of the flow field, the lattice Boltzmann method is used, where the free surface is represented by a VOF approach. The advection equation for the VOF fill level is discretized with a fini...

A novel computational fluid dynamics and molecular kinetic theory (CFD-MK) method was developed to simulate the impingement of a nanodroplet onto a solid surface. A numerical solution of the Navier–Stokes equation using a volume-of-fluid (VOF) technique was used to model nanodroplet deformation. Dynamic contact angle during droplet impact was obtained by molecular kinetic theory. This dynamic c...

In this study we implemented the network simulation techniques using macromodels (lumped models) for capillary driven flows in microfluidic networks. The flow characteristics in a flow junction, such as meniscus stretching and bifurcation, were studied and their effects on filling time as well as pressure drop were explored for various network configurations. The results from the network simula...

In this study, some important variables in the bioleaching, such as ferric and zinc ions concentration in the liquid phase and velocity field around a single particle were simulated. Volume of fluid (VOF) method was used to predict the mentioned fields in a 3D geometry. Results show that VOF is a successful approach for prediction of velocity and concentration fields. The computational model ha...

The Moment-of-Fluid (MOF) method is a new volume-tracking method that accurately treats evolving material interfaces. The MOF method uses moment data, namely the material volume fraction, as well as the centroid, for a more accurate representation of the material configuration, interfaces and concomitant volume advection. In contrast, the Volume-of-Fluid (VOF) method uses only volume fraction d...

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 ...