跨尺度计算泡沫流：从破碎波到微流体
Computing foaming flows across scales: from breaking waves to microfluidics
摘要：
汹涌的海浪、卡布奇诺泡沫和微流体气泡晶体都是泡沫流的例子。泡沫流在许多自然和工业过程中至关重要，并且由于涉及耦合的多尺度物理过程而难以计算。计算需要解决气泡与流体和复杂边界的相互作用，同时捕获在其界面处的微观液体膜的排水和破裂。我们提出了一种新的多层模拟框架（多VOF），先进的泡沫流的模拟能力的最新水平。该框架引入了一种新的方案，用于不同的处理多个相邻的气泡和一种新的正则化方法，产生尖锐的界面，并删除虚假的片段。多VOF的实验结果进行了验证和验证，并补充了开源，高效的可扩展的软件。我们展示了捕获气泡晶体结构在现实的微流体设备和泡沫流涉及数以万计的气泡在瀑布。本多层框架扩展了经典的流体体积方法，并允许前所未有的大规模，预测模拟多个接口的流动。
英文摘要：
Crashing ocean waves, cappuccino froths and microfluidic bubble crystals are examples of foamy flows. Foamy flows are critical in numerous natural and industrial processes and remain notoriously difficult to compute as they involve coupled, multiscale physical processes. Computations need to resolve the interactions of the bubbles with the fluid and complex boundaries, while capturing the drainage and rupture of the microscopic liquid films at their interface. We present a novel multilayer simulation framework (Multi-VOF) that advances the state of the art in simulation capabilities of foamy flows. The framework introduces a novel scheme for the distinct handling of multiple neighboring bubbles and a new regularization method that produces sharp interfaces and removes spurious fragments. Multi-VOF is verified and validated with experimental results and complemented with open source, efficient scalable software. We demonstrate capturing of bubble crystalline structures in realistic microfluidics devices and foamy flows involving tens of thousands of bubbles in a waterfall. The present multilayer framework extends the classical volume-of-fluid methodology and allows for unprecedented large scale, predictive simulations of flows with multiple interfaces.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
