报告题目：A Smoothed Particle Hydrodynamics Model with Explicit and Physically Interpretable Parameters for Droplet Dynamics on Complex Surfaces
报 告 人：乔中华 教授
工作单位：香港理工大学
报告时间：2026年8月9日 16：00-18：00
报告地点： 数信学院3412报告厅
报告摘要：
Numerical simulation of droplet dynamics on complex surfaces with varying wettability is of great significance to both engineering applications and fundamental research. However, existing numerical methods still face challenges in accurately capturing interfacial interactions while preserving physical consistency and computational efficiency. In this work, we develop a physically grounded, robust, and efficient smoothed particle hydrodynamics (SPH) framework for simulating droplet dynamics. To reduce computational cost, a single-phase droplet modeling strategy is employed. At the interface, the long-range interaction is approximated using the SPH kernel function, while pressure is introduced to account for the effect of the short-range force.
An explicit relationship between the intermolecular potential energy and the macroscopic surface tension coefficient is further established, reducing reliance on empirical parameter calibration. The proposed method is validated through static wetting simulations, where the predicted equilibrium contact angles agree well with Young’s equation. Furthermore, additional numerical experiments are conducted to demonstrate the capability of the proposed method to capture complex dynamic wetting behaviors.
报告人简介：
乔中华教授2006年获香港浸会大学博士学位，现任香港理工大学应用数学系讲座教授，兼任中国科学院数学与系统科学研究院—香港理工大学应用数学联合实验室港方副主任、中国工业与应用数学学会常务理事、中国数学会计算数学分会副理事长。2025年当选为中国工业与应用数学学会会士。
主要研究方向为微分方程数值算法设计与分析，近年来聚焦于相场方程数值模拟及计算复杂流体高效算法。在多相复杂系统数值研究领域取得突出成就，尤其在相场模型的能量稳定性及保最大模上界原理数值方法方面，提出了一系列原创性成果。曾获香港研究资助局杰出青年学者奖（2013）、香港数学会青年学者奖（2018）及香港研究资助局研究学者奖（2020）。迄今已在SIAM Review等国际知名期刊发表论文90余篇，现担任AAMM执行主编，以及SISC、JCP、NMPDE、IJNAM等国际期刊编委。
