超越毛细作用：含气泡湍流中的扩展界面能量传递
Beyond capillarity: extended interfacial energy transfer in bubble-laden turbulence
浏览论文内容
中文总结 AI 辅助
本文通过谱分析发现，含气泡湍流中短程近接触相互作用使毛细功率产生有限负残差，并由短程排斥力功补偿，从而揭示了超越纯毛细作用的扩展界面能量传递路径。
中文摘要 AI 辅助
毛细力通常被视为多相湍流中一个能量封闭的通道，仅在不同尺度间重新分配动能，而无净增益或损失。本文表明，当短程近接触相互作用活跃时，这一图景在含气泡湍流中不再成立。对动能预算的谱分析揭示，累积毛细功率在统计定常状态下并未消失，而是保留了一个有限的负残差。这一表观不平衡恰好由短程排斥力的功所补偿，该功在大尺度和中等尺度上可忽略，仅在小尺度上变为正值。因此，近接触相互作用在界面能量传递中开辟了一条独特的小尺度路径，而非仅仅作为未解析薄膜的正则化手段。正确的逐尺度描述因此是一种扩展的界面传递，结合了毛细功与近接触功，而非纯粹的毛细传递。
英文摘要
Capillary forces are commonly regarded as an energetically closed channel in multiphase turbulence, redistributing kinetic energy across scales without net gain or loss. Here we show that this picture breaks down in bubble-laden turbulence when short-range near-contact interactions are active. A spectral analysis of the kinetic-energy budget reveals that the cumulative capillary power does not vanish at statistical stationarity, but instead retains a finite negative residual. This apparent imbalance is exactly compensated by the work of short-range repulsive forces, which is negligible at large and intermediate scales and becomes positive only at small scales. Near-contact interactions therefore open a distinct small-scale pathway in the interfacial energy transfer, rather than acting as a mere regularization of unresolved thin films. The proper scale-by-scale description is thus an extended interfacial transfer, combining capillary and near-contact work, rather than a purely capillary one.
发表机构
- Roma Tre University（罗马第三大学）
机构由 AI 辅助整理，请以论文原文为准。
