论文标题
用于液态液体界面和液体液体界面的晶格玻尔兹曼模型
A lattice Boltzmann model for self-diffusiophoretic particles near and at liquid-liquid interfaces
论文作者
论文摘要
我们引入了一种新型的介质计算模型，该模型基于多相 - 多种成分晶格Boltzmann方法，用于在存在液体液体接口的情况下模拟自动颗粒。我们的模型具有完全分辨的溶剂流体动力学，并且由于其多功能性，它可以处理问题的多物理的重要方面，包括在两个液相中产品的粒子润湿性和差异性。该方法在简单的数值实验中得到了广泛的验证，其结果在理论上是可预测的，然后应用于对界面旁边有效粒子行为的研究。我们表明，可以通过调整相关控制参数（例如流动迁移率，接触角和产物溶解度）来对其运动进行各种操纵。
We introduce a novel mesoscopic computational model based on a multiphase-multicomponent lattice Boltzmann method for the simulation of self-phoretic particles in the presence of liquid-liquid interfaces. Our model features fully resolved solvent hydrodynamics and, thanks to its versatility, it can handle important aspects of the multiphysics of the problem, including particle wettability and differential solubility of the product in the two liquid phases. The method is extensively validated in simple numerical experiments, whose outcome is theoretically predictable, and then applied to the study of the behaviour of active particles next to and trapped at interfaces. We show that their motion can be variously steered by tuning relevant control parameters, such as the phoretic mobilities, the contact angle and the product solubility.
