Numerical simulation for fluid droplet impact on discrete particles with coupled SPH-DEM method
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 30 October 2018
Issue publication date: 30 October 2018
Abstract
Purpose
A new coupled model is developed to simulate the interaction between fluid droplet collisions on discrete particles (DPs) by using mathematic function.
Design/methodology/approach
In this model, the smoothed particle hydrodynamics (SPH) is used based on the kernel function and the time step which takes into consideration to the fluid domain in accordance with the discrete element method (DEM) with resistance function. The interaction between fluid and DPs consists of three parts, which are repulsive force, viscous shear force and attractive force caused by the capillary action. The numerical simulation of droplet collision on DPs presents the whole process of droplet motion. Otherwise, an experimental data were conducted to record the realistic process for verification.
Findings
The comparison result indicated that the numerical simulation is capable of capturing the entire process for droplet collision on DPs.
Research limitations/implications
However, based on the difference of experimental environment, type of the DP and setups, the maximum spreading dimeters of could not fit the experimental data exactly.
Originality/value
In sum, the coupled SPH-DEM method simulation shows that the coupled model of SPH-DEM developed an entire effectiveness process for fluid–solid interaction problem.
Keywords
Acknowledgements
The authors thank Professor Li for experimental advice including providing equipment and material. They appreciate W. Zhichao for contributing useful suggests on the Visual Fortran programming and advices on the SPH coding. They acknowledge T. Xingchen, Z. Hongqiang, W. Xiao, B. Shilong, C. Shuo, T. Shunfa and L. Shan for valuable discussions. The authors also thank an anonymous referee for their rigorous review.
Citation
Li, Y., Li, D., Bie, S., Wang, Z., Zhang, H., Tang, X. and Zhen, Z. (2018), "Numerical simulation for fluid droplet impact on discrete particles with coupled SPH-DEM method", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 28 No. 11, pp. 2581-2605. https://doi.org/10.1108/HFF-11-2017-0464
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited