Fast and accurate solvers for simulating Janus particle suspensions in Stokes flow
Fast and accurate solvers for simulating Janus particle suspensions in Stokes flow
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DOI：
10.1007/s10444-023-10046-y
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发表时间：
2023-06-23
影响因子：
1.7
通讯作者：
Veerapaneni，Shravan
中科院分区：
文献类型：
--
作者：
Kohl，Ryan;Corona，Eduardo;Veerapaneni，Shravan
我们提出了一个新的计算框架，模拟刚性球形Janus粒子悬浮在斯托克斯流。对于各种各样的Janus粒子类型，我们表明远程相互作用可以使用快速，光谱精确的边界积分方法解决。我们将其结合到我们的刚体斯托克斯平台，它解决了流体动力学相互作用和接触。我们的方法的特点是使用球谐展开的光谱精确的积分算子的评价，互补性为基础的碰撞分辨率，和optimalscaling粒子的数量时，通过快速求和技术加速。我们证明了我们的模拟平台的多功能性，通过三个测试案例涉及Janus粒子系统突出的应用：两亲性，双极electricandphoreticparticles。对于每个测试案例，我们制定Janus粒子相互作用的边界积分形式，并使用我们的框架来展示这些系统的自组装和复杂的集体行为特征的例子。
We present a novel computational framework for the simulation of rigid spherical Janus particle suspensions in Stokes flow. For a wide array of Janus particle types, we show long-range interactions may be resolved using fast, spectrally accurate boundary integral methods. We incorporate this to our rigid body Stokes platform, which resolves hydrodynamic interactions and contact. Our approach features the use of spherical harmonic expansions for spectrally accurate integral operator evaluation, complementarity-based collision resolution, and optimalscaling with the number of particles when accelerated via fast summation techniques. We demonstrate the versatility of our simulation platform through three test cases involving Janus particle systems prominent in applications:amphiphilic, bipolar electricandphoreticparticles. For each test case, we formulate Janus particle interactions in boundary integral form and use our framework to demonstrate examples of self-assembly and complex collective behavior characteristic of these systems.