Multiscale Modeling of Membrane Rearrangement, Drainage, and Rupture in Evolving Foams
Multiscale Modeling of Membrane Rearrangement, Drainage, and Rupture in Evolving Foams
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DOI：
10.1126/science.1230623
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发表时间：
2013-05-10
期刊：
影响因子：
56.9
通讯作者：
Sethian, James A.
中科院分区：
文献类型：
--
作者：
Saye, Robert I.;Sethian, James A.
由于涉及的时间和空间尺度差异很大，因此对泡沫和泡沫状材料（如脱硫泡沫、阻燃剂和轻质碰撞吸收结构）的物理学建模存在挑战。通过分离和耦合这些不同的尺度，我们设计了一个多尺度框架来模拟干泡沫动力学。这导致了一个预测和灵活的计算方法链接，与一些简化的假设，泡沫排水，破裂，和拓扑重排，耦合界面下的表面张力，重力和不可压缩流体动力学的流体运动。我们的计算结果匹配理论分析和实验观察到的物理效应，包括薄膜排水和干扰，并用于研究气泡破裂级联和宏观重排。所开发的多尺度模型可以定量计算复杂的泡沫演化现象。
Modeling the physics of foams and foamlike materials, such as soapy froths, fire retardants, and lightweight crash-absorbent structures, presents challenges, because of the vastly different time and space scales involved. By separating and coupling these disparate scales, we have designed a multiscale framework to model dry foam dynamics. This leads to a predictive and flexible computational methodology linking, with a few simplifying assumptions, foam drainage, rupture, and topological rearrangement, to coupled interface-fluid motion under surface tension, gravity, and incompressible fluid dynamics. Our computed results match theoretical analyses and experimentally observed physical effects, including thin-film drainage and interference, and are used to study bubble rupture cascades and macroscopic rearrangement. The developed multiscale model allows quantitative computation of complex foam evolution phenomena.