Dynamics of collision of a spherical ice crystal particle with a perfectly rigid substrate

一种用于模拟刚理想塑性颗粒材料的两阶段流体体积法

A two-phase Volume of Fluid approach to model rigid-perfectly plastic granular materials

针对颗粒流大变形问题，提出结合Drucker-Prager准则、Bingham流体与VoF法的刚理想塑性两相模型，经不同休止角材料验证，预测结果与实验和数值数据吻合良好，可用于大规模颗粒介质模拟。

Fluid-structure interaction of a large ice sheet in waves

With global warming, the ice-covered areas in the Arctic are being transformed into open water. This provides increased impetus for extensive maritime activities and attracts research interests in sea ice modelling. In the polar region, ice sheets can be several kilometres long and subjected to the effects of ocean waves. As its thickness to length ratio is very small, the wave response of such a large ice sheet, known as its hydroelastic response, is dominated by an elastic deformation rather than rigid body motions. In the past 25 years, sea ice hydroelasticity has been widely studied by the…

Smoothed Particle Hydrodynamics Method for Two-dimensional Stefan Problem

Smoothed particle hydrodynamics (SPH) is developed for modelling of melting and solidification. Enthalpy method is used to solve heat conduction equations which involved moving interface between phases. At first, we study the melting of floating ice in the water for two-dimensional system. The ice objects are assumed as solid particles floating in fluid particles. The fluid and solid motion are governed by Navier-Stokes equation and basic rigid dynamics equation, respectively. We also propose a strategy to separate solid particles due to melting and solidification. Numerical results are obtain…

具有刚性压实层的颗粒悬浮液单向冻结过程中非线性界面动力学的预测

Prediction of nonlinear interface dynamics in the unidirectional freezing of particle suspensions with rigid compacted layer

针对颗粒悬浮液单向冻结中参数难确定的问题，本文基于动量定理建立耦合水渗透效应的自洽理论框架，推导界面过冷相关推力并分析动态压实层，通过非线性模型数值解揭示关键参数对界面动力学及冰矛形成机制的影响。

耦合刚体运动与二元相变：一种尖锐水平集/嵌入边界方法

Coupled Rigid-Body Motion and Binary Phase Change: A Sharp Level-Set/Embedded-Boundary Method

本文提出一种尖锐水平集/嵌入边界方法，用于模拟自由移动固体颗粒的纯或二元熔化，耦合刚体运动与相变，并通过多级验证及冰盘等应用展示其准确性和保守性。

Liquid meniscus friction on a wet plate: Bubbles, lamellae and foams

Many microfluidics devices, coating processes or diphasic flows involve the motion of a liquid meniscus on a wet wall. This motion induces a specific viscous force, that exhibits a non-linear dependency in the meniscus velocity. We propose a review of the theoretical and experimental work made on this viscous force, for simple interfacial properties. The interface is indeed assumed either perfectly compressible (mobile interface) or perfectly incompressible (rigid interface). We show that, in the second case, the viscous force exerted by the wall on the meniscus is a combination of two power l…