• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Second International Conference on Estuaries and Coasts vol.1; 第二届河口海岸国际研讨会论文集 >ANALYSIS OF ISLAND WAKES In Shallow WATERS
【24h】

ANALYSIS OF ISLAND WAKES In Shallow WATERS

机译：浅水岛唤醒的分析

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Turbulent shear flows are omnipresent in nature. Examples include oceanic wake flow generated in lee side of islands and jet flows due to effluent discharge into rivers or estuaries. Highly organized large-scale two-dimensional coherent structures are commonly observed in shallow turbulent shear flows. For instance, re-circulating eddies of the size of the island were observed in Rupert Bay in Northern Canada. The vertical length scale Lz of the coherent structures is of the order of water depth, while their horizontal length scale Lx is of the order of size of the free shear layer. These flows are referred to as shallow when their horizontal length scale is much larger than their vertical length scale (Lx＞＞Lz). This paper is devoted to the study of island wakes in shallow water. The study is carried out using a numerical model based on the shallow water equations. The numerical scheme is a conservative finite volume in which the fluxes are obtained from Boltzmann equation in conjunction with the Bhatnagar-Gross-Krook collision model. The numerical model is hereafter referred to as BGK model. The results generated by the BGK model are compared to the experimental data as well as the numerical results shown in other literatures, thus showing the capability and limitation of the BGK model on the study of island wakes in shallow water.
机译：湍流剪切流在自然界无处不在。例子包括在岛屿的背风侧产生的海洋尾流和由于污水排入河流或河口而产生的喷射流。通常在浅湍流剪切流中观察到高度组织的大规模二维相干结构。例如，在加拿大北部的鲁珀特湾（Rupert Bay）观察到了岛屿大小的再循环涡流。相干结构的垂直长度尺度Lz约为水深，而其水平长度尺度Lx约为自由剪切层的大小。当它们的水平长度尺度远大于垂直长度尺度（Lx ＞＞ Lz）时，这些流动被称为浅流。本文致力于浅水岛尾流的研究。该研究是使用基于浅水方程的数值模型进行的。数值方案是一个保守的有限体积，其中通量是从Boltzmann方程与Bhatnagar-Gross-Krook碰撞模型一起获得的。以下将该数值模型称为BGK模型。将BGK模型生成的结果与实验数据以及其他文献中显示的数值结果进行了比较，从而表明了BGK模型在研究浅水岛中尾流方面的能力和局限性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号