APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Simulation of arbitrarily shaped colloids with active boundary layers

Florencio Balboa Usabiaga; Bakytzhan Kallemov; Blaise Delmotte; Aleksandar Donev

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APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Simulation of arbitrarily shaped colloids with active boundary layers

机译：APS-流体动力学APS分部第70届年会-事件-具有活动边界层的任意形状胶体的模拟

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In this work, we will explore the simulation of active particles of arbitrary shape in Stokes flow. We will discuss how to represent rigid bodies with a multiblob model and how to model the active boundary layers created by phoretic particles with an active velocity slip. In our framework, the simulation of active or passive colloids only requires one mobility solve per time stepand the activity effects do not increase the computational cost respect the simulation of passive colloids. We will validate our method against the classical squirmer model and show results for active micro-rods that assemble under their self-induced extensile flows.

机译：在这项工作中，我们将探索斯托克斯流中任意形状的活动粒子的模拟。我们将讨论如何用多blob模型表示刚体，以及如何对具有活动速度滑移的电泳粒子创建的活动边界层建模。在我们的框架中，对有源或无源胶体的仿真每时间步仅需要一个迁移率求解，并且相对于无源胶体的仿真，活性效应不会增加计算成本。我们将对照经典的squirmer模型验证我们的方法，并显示在其自身诱导的可扩展流作用下组装的活动微棒的结果。

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《Bulletin of the American Physical Society》 |2017年第14期|共页
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Florencio Balboa Usabiaga; Bakytzhan Kallemov; Blaise Delmotte; Aleksandar Donev;
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APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Simulation of arbitrarily shaped colloids with active boundary layers

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