Regularized lattice Boltzmann Multicomponent models for low Capillary and Reynolds microfluidics flows

TL;DR

This paper introduces a regularized color gradient lattice Boltzmann model tailored for simulating droplet formation in microfluidic devices, enabling efficient analysis of low Capillary and Reynolds number flows relevant to experimental microfluidics.

Contribution

The paper develops a regularized lattice Boltzmann scheme that improves computational efficiency for low Capillary and Reynolds number microfluidic flow simulations, specifically for droplet generation.

Findings

Efficient simulation of droplet formation in microfluidic devices.

Applicable to flow-focusers and microfluidic step emulsifiers.

Enhanced computational performance for low Capillary number regimes.

Abstract

We present a regularized version of the color gradient lattice Boltzmann (LB) scheme for the simulation of droplet formation in microfluidic devices of experimental relevance. The regularized version is shown to provide computationally efficient access to Capillary number regimes relevant to droplet generation via microfluidic devices, such as flow-focusers and the more recent microfluidic step emulsifier devices.