Benchmark experiments for validation of the coupled fluid-solid model considering object shape

Abstract

Benchmark data for validating coupled fluid-solid models was obtained through underwater drop experiments involving circular, rectangular, and L-shaped objects. Image processing was used to analyze the motion of these objects, and each experiment was repeated 10–15 times to ensure reproducibility. Four types of coupled methods (SPH-DEM, LBM-DEM, FDM-DEM and FVM-DEM) were used to simulate the experiments and evaluate the dynamics of the underwater drops as a validation approach. To facilitate validation and improve the accuracy of coupled fluid-solid models for other researchers, the resulting benchmark data will be published as an appendix to this paper.