A moving-grid approach for fluid-structure interaction problems with hybrid lattice Boltzmann method

TL;DR

This paper introduces a hybrid lattice Boltzmann method with a moving grid to effectively simulate fluid-structure interactions involving moving geometries, validated through numerical and experimental comparisons.

Contribution

The paper presents a novel hybrid lattice Boltzmann approach that improves simulation accuracy for fluid-structure interactions with moving boundaries.

Findings

Validated against experimental data

Accurately models flow around vibrating structures

Enhances lattice Boltzmann method capabilities

Abstract

In this paper, we propose a hybrid lattice Boltzmann method (HLBM) for solving fluid-structure interaction problems. The proposed numerical approach is applied to model the flow induced by a vibrating thin lamina submerged in a viscous quiescent fluid. The hydrodynamic force exerted by the fluid on the solid body is described by means of a complex hydrodynamic function, whose real and imaginary parts are determined via parametric analysis. Numerical results are validated by comparison with those from other numerical as well as experimental works available in the literature. The proposed hybrid approach enhances the capability of lattice Boltzmann methods to solve fluid dynamic problems involving moving geometries.