论文标题
在微尺度系统中识别弱扰动的三波过程
Identification of weakly- to strongly-turbulent three-wave processes in a micro-scale system
论文作者
论文摘要
我们发现毛细血管波湍流（WT）跨越了多个动力学状态和几何形状 - 从弱到强烈的非线性WT（SWT）以及从浅层到深域，均在40英寸的体积毫米系统范围内。这项研究是可行的，随着超高数字全息显微镜的最新进展，为整个视野中的图像提供了10 nm的时间和10 nm的空间分辨率，并以足以捕获出色波浪现象的速度涵盖完整的波系统。我们提供了一组可访问的参数，这些参数可以识别此简单系统中存在的四个基本WT制度。提出的非线性度量允许在变化输入条件的同时进行比较分析。这项工作增强了对WT制度和行为的当前理解，并直接适用于除流体力学以外的许多领域。例如，SWT出现在流体界面上的力量少于雾化所需的功率，这表明需要对SWT进行进一步研究，以正确理解超声驱动的燃油喷雾雾化和药物和农业雾化。
We find capillary wave turbulence (WT) to span multiple dynamical regimes and geometries -- from weakly to strongly nonlinear WT (SWT) and from shallow to deep domains -- all within a 40uL volume millifluidic system. This study is made viable with recent advances in ultra-high-speed digital holographic microscopy, providing 10-us time and 10-nm spatial resolutions for images across the entire field of view, and encompassing a complete wave system at speeds sufficient to capture the salient wave phenomena. We provide a set of tractable parameters that identify the four fundamental WT regimes present in this simple system. A proposed nonlinearity measure permits comparative analysis while varying input conditions. This work augments current understanding of WT regimes and behaviors, and directly applies to many fields beyond fluid mechanics. For example, SWT appears upon the fluid interface at powers less than required for atomization, indicating that further study of SWT is needed to properly understand ultrasound-driven fuel spray atomization and drug and agricultural nebulization.
