Capillary driven fragmentation of large gas bubbles in turbulence
Capillary driven fragmentation of large gas bubbles in turbulence
复制标题
湍流中大气泡的毛细管驱动破碎
DOI：
10.1103/physrevfluids.7.083602
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发表时间：
2022
影响因子：
2.7
通讯作者：
Perrard, Stéphane
中科院分区：
文献类型：
--
作者：
Rivière, Aliénor;Ruth, Daniel J.;Mostert, Wouter;Deike, Luc;Perrard, Stéphane
当量化大气和海洋之间的质量交换时，破碎波下方的气泡尺寸分布是最重要的。界面处的质量通量是由气泡驱动的，这些气泡与Hinze尺度相比很小，Hinze尺度是气泡稳定的临界尺寸，即使单个气泡的体积可以忽略不计。结合实验和数值方法，我们报告了小气泡尺寸分布的幂律标度，以使喷射尺寸和Hinze尺度之间的尺度分离足够大。从单个气泡破裂的分析，我们表明，小气泡产生的毛细管效应，和他们的破裂时间尺度，这在物理上解释了所观察到的子欣泽缩放。
The bubble size distribution below a breaking wave is of paramount interest when quantifying mass exchanges between the atmosphere and oceans. Mass fluxes at the interface are driven by bubbles that are small compared with the Hinze scale, the critical size below which bubbles are stable, even though individually these are negligible in volume. Combining experimental and numerical approaches, we report a power-law scalingfor the small bubble size distribution, for sufficiently large separation of scales between the injection size and the Hinze scale. From an analysis of individual bubble breakups, we show that small bubbles are generated by capillary effects, and that their breakup time scales as, which physically explains the sub-Hinze scaling observed.
影响因子：
3.7
作者：
Mostert, W.;Popinet, S.;Deike, L.
通讯作者：
Deike, L.
影响因子：
3.7
作者：
Riviere, Alienor;Mostert, Wouter;Deike, Luc
通讯作者：
Deike, Luc