Two‐Layer Model of Saline Wedge. I: Entrainment and Interfacial Friction
Two‐Layer Model of Saline Wedge. I: Entrainment and Interfacial Friction
复制标题
盐水楔的两层模型 I：夹带和界面摩擦。
DOI：
10.1061/(asce)0733-9429(1987)113:10(1229
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发表时间：
1987
影响因子：
2.4
通讯作者：
G. Jirka
中科院分区：
文献类型：
--
作者：
M. Arita;G. Jirka
被阻止的盐水楔形几何形状的特征在于两个主要的内部分界线，密度界面和零速度线（ZVL）。作为对早期基于密度界面的两层模型公式的补充，开发了一个使用ZVL的两层模型。该模型的优点是，它分为一个积极的高动能含量的上部区域和一个被动的下部区域的建议，详细的实验。通过ZVL的净夹带驱动被动盐带中的流动。夹带模型的基础上开发的稳定性理论和相似理论的湍流浮力剪切流，但包括一个经验过渡到纯层流在低雷诺数范围内。该模型依赖于两个局部参数，一个散装理查森数（或密度弗劳德数）和散装雷诺数。预测的夹带率同意与现有的数据在参数范围内。此外，该模型还可以扩展到...
The arrested saline wedge geometry is characterized by two major internal demarcation lines, the density interface and the zero velocity line (ZVL). As a complement to earlier two‐layer model formulations that are based upon the density interface, a two‐layer model using the ZVL is developed. The advantage of this model is that it divides the flow into an active upper zone with high kinetic energy content and a passive lower zone as suggested by detailed experiments. Net entrainment across the ZVL drives the flow in the passive salt zone. An entrainment model is developed on the basis of stability theory and similarity theory for turbulent buoyant shear flows but includes an empirical transition to purely laminar flow in the low Reynolds number range. The model depends on two local parameters, a bulk Richardson number (or densimetric Froude number) and a bulk Reynolds number. Predicted entrainment rates agree well with available data over the range of parameters. Furthermore, the model can be extended to ...