Coupled Level-Set Lattice Boltzmann Method on Adaptive Cartesian Grids

TL;DR

This paper introduces a new coupled level-set lattice Boltzmann method on adaptive Cartesian grids for simulating multiphase flows with sharp interfaces, improving accuracy and efficiency in modeling complex interfacial dynamics.

Contribution

The paper presents a novel coupled level-set lattice Boltzmann approach with adaptive grids, enhancing simulation accuracy and efficiency for liquid-gas multiphase flows.

Findings

Accurately captures complex interfacial dynamics.

Demonstrates improved efficiency with adaptive grids.

Validates results against literature data.

Abstract

A novel coupled level-set lattice Boltzmann method on adaptive Cartesian grids for simulating liquid-gas multiphase flows is presented. The approach addresses the inherent challenges of accurately modeling multiphase systems characterized by sharp interfaces and large density ratios. By employing separate solution algorithms for each fluid phase which are coupled through boundary conditions at the interface the method is more accurate and more efficient. The study highlights the advantages of using lattice Boltzmann methods together with level-set techniques to track interfaces effectively while facilitating adaptive mesh refinement. Applications to various test cases, e.g., immiscible stratified flow and rising bubbles, demonstrate the method's capability to capture complex interfacial dynamics and validate its accuracy against literature data.