Dispersion of finite-size, non-spherical particles by waves and currents
Dispersion of finite-size, non-spherical particles by waves and currents
复制标题
通过波浪和水流分散有限尺寸的非球形颗粒
DOI：
10.1017/jfm.2022.968
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发表时间：
2022
影响因子：
3.7
通讯作者：
J. Koseff
中科院分区：
文献类型：
--
作者：
Laura K. Clark;Michelle H. DiBenedetto;N. Ouellette;J. Koseff
摘要
我们展示了一组旨在测量非球形颗粒在波流中扩散情况的实验结果。我们将负浮力的圆盘、 rods（棒状物）和单位长径比的圆柱体放入有波和无波的水流中，并分析它们各自的落点位置，以量化它们在水流中扩散的程度。我们发现，波的存在显著增加了颗粒的扩散，且这种增加的幅度取决于颗粒的形状和体积。特别是，较细的棒状物和较薄的圆盘分别比较粗的棒状物和较厚的圆盘具有更大的相对扩散，较小的颗粒比较大的颗粒具有更大的相对扩散。尽管在有波的情况下颗粒移动得更远，但扩散的增加幅度远大于仅由运输距离增加所能解释的程度。这些结果表明，微塑料运输模型必须考虑波以及颗粒特性。
Abstract We present the results of a set of experiments designed to measure the dispersion of non-spherical particles in a wave–current flow. We released negatively buoyant discs, rods and unit-aspect-ratio cylinders into a flow both with and without waves and analysed their respective landing positions to quantify how much they had dispersed while in the flow. We found that the presence of waves significantly increased the dispersion of the particles, and that the magnitude of this increase depends on particle shape and volume. In particular, thinner rods and thinner discs have greater relative dispersion than thicker rods and thicker discs, respectively, and smaller particles have greater relative dispersion than larger particles. Although the particles travelled farther in the presence of waves, the increase in dispersion was much greater than could be explained solely by increased transport distance. These results indicate that models of microplastic transport must account for waves as well as particle characteristics.
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影响因子：
3.7
作者：
DiBenedetto, Michelle H.
通讯作者：
DiBenedetto, Michelle H.
影响因子：
2.7
作者：
Clark, Laura K.;DiBenedetto, Michelle H.;Koseff, Jeffrey R.
通讯作者：
Koseff, Jeffrey R.
影响因子：
3.7
作者：
DiBenedetto, Michelle H.;Ouellette, Nicholas T.
通讯作者：
Ouellette, Nicholas T.
影响因子：
2.7
作者：
DiBenedetto, Michelle H.;Koseff, Jeffrey R.;Ouellette, Nicholas T.
通讯作者：
Ouellette, Nicholas T.
影响因子：
3.7
作者：
DiBenedetto, Michelle H.;Clark, Laura K.;Pujara, Nimish
通讯作者：
Pujara, Nimish