Numerical simulation of secondary breakup of shear-thinning droplets

Numerical investigation of thermal mixing of shear thinning fluids in one-way opposing jets

In recent years, impinging streams have received increasing interest for their high efficiency in heat and mass transfer. This numerical study was conducted to investigate flow and heat transfer characteristics of one-way opposing jets of non-Newtonian fluids. Effects of Reynolds number impinging angle, momentum ratio and flow behavior index on mixing index were evaluated. The results showed im...

Numerical simulation of particle encapsulation due to liquid thread breakup

The capillary instability of a liquid thread containing a periodic array of particles along the centerline is considered with reference to micro-encapsulation. The Navier–Stokes equation for axisymmetric flow inside and outside the thread is solved using an immersed boundary method implemented on a boundary-fitted orthogonal curvilinear grid that conforms with the particle shape. Numerical simu...

Reduction of Parasitic Currents in Simulation of Droplet Secondary Breakup with Density Ratio Higher than 60 by InterDyMFoam

Coalescence and Breakup of Oppositely Charged Droplets

The coalescence process of oppositely charged drops for different electrical conductivities of liquids is presented. When the electrical conductivity was relatively low, oppositely charged drops failed to coalesce under sufficiently high electrical fields and capillary ripples were formed on the surfaces of droplets after rebound. For a high electrically conductive liquid, it was found that a c...

Numerical simulation of breakup of a viscous drop in simple shear flow through a volume-of-fluid method

A spherical drop, placed in a second liquid of the same density, is subjected to shearing between parallel plates. The subsequent flow is investigated numerically with a volume-of-fluid ~VOF! method. The scheme incorporates a semi-implicit Stokes solver to enable computations at low Reynolds number. Our simulations compare well with previous theoretical, numerical, and experimental results. For...