TLBfind: a Thermal Lattice Boltzmann code for concentrated emulsions with FINite-size Droplets

TL;DR

TLBfind is a GPU-accelerated lattice Boltzmann code designed for simulating the hydrodynamics and thermal behavior of concentrated emulsions with finite-size droplets, enabling detailed physical analysis.

Contribution

The paper introduces TLBfind, a novel GPU-based lattice Boltzmann simulation tool capable of modeling thermal and droplet dynamics in concentrated emulsions with advanced features.

Findings

Efficient GPU implementation for complex emulsion simulations

Ability to measure numerous physical observables in flow

Supports structured boundary conditions for channel flows

Abstract

In this paper, we present TLBfind, a GPU code for simulating the hydrodynamics of droplets along with a dynamic temperature field. TLBfind hinges on a two-dimensional multi-component lattice Boltzmann (LB) model simulating a concentrated emulsion with finite-size droplets evolving in a thermal convective state, just above the transition from conduction to convection. The droplet concentration of the emulsion system is tenable, and at the core of the code lies the possibility to measure a large number of physical observables characterising the flow and droplets. Furthermore, TLBfind includes a parallel implementation on GPU of the Delaunay triangulation useful for the detection of droplets' plastic rearrangements, and several types of boundary conditions, supporting simulations of channels with structured rough walls.