Statistics of Jet Drop Production
Statistics of Jet Drop Production
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DOI：
10.1029/2021gl092919
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发表时间：
2021-05-28
影响因子：
5.2
通讯作者：
Deike, L.
中科院分区：
文献类型：
--
作者：
Berny, A.;Popinet, S.;Deike, L.
在海洋表面破裂的气泡是海洋喷雾气溶胶的一个重要来源。我们描述了喷射液滴生产，从合奏的高保真数值模拟的气泡破裂，对实验结果进行验证。喷射液滴的数量、它们的尺寸和速度由气泡尺寸R-b和粘性毛细管长度的比率lmu =rho w gamma Rb/mu w2控制，其中gamma是表面张力，rho（w），mu（w）是水的密度和粘度。平均液滴尺寸遵循与（Rb/l mu）5/4成比例的rd范围，并且喷射的液滴数量n与（Rb/l mu）-1/3成比例，说明了温度变化。我们证实，亚微米喷射液滴是由10-40微米范围内的气泡产生的。我们计算的喷射液滴的分布，形成了一系列的气泡下存在的破碎波比较以及对实验室实验。我们讨论了所提出的配方的背景下，海喷雾生成函数的适用性。
Bubbles bursting at the ocean surface are an important source of sea-spray aerosol. We describe jet drop production, from ensembles of high fidelity numerical simulations of bubble bursting, validated against experimental results. The number of jet drops, their size, and velocity are controlled by the ratio of the bubble size, R-b, and the visco-capillary length, l mu=rho w gamma Rb/mu w2, where gamma is the surface tension, rho(w), mu(w) the water density and viscosity. The mean drop size follows < rd & rang;proportional to(Rb/l mu)5/4 and the ejected number of drops n proportional to(Rb/l mu)-1/3, accounting for temperature variations. We confirm that submicrons jet drops are produced by bubbles in the 10-40 microns range. We compute the distribution of jet drops formed by a range of bubbles present under a breaking wave which compares well against laboratory experiments. We discuss the applicability of the proposed formulation in the context of sea spray generation function.