...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Mathematical Modelling >Modeling investigation of suspended sediment transport in a tidal estuary using a three-dimensional model
【24h】

Modeling investigation of suspended sediment transport in a tidal estuary using a three-dimensional model

机译：利用三维模型对潮汐河口悬浮泥沙运移进行建模研究

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

This study presents an incorporation and application of a three-dimensional, unstructured-grid hydrodynamic model with a suspended sediment transport module in the Danshui-River estuarine system, Taiwan, and its adjacent coastal sea. The model is verified with data observed in 2010: water surface elevations, longitudinal velocities, salinities and suspended sediment concentration (SSC). The simulations agreed quantitatively with the observations. The validated model was applied to numerical experiments to investigate the formation of the estuarine turbidity maximum (ETM) and the influence of vertical mixing, different freshwater-discharge conditions and bathymetric change on suspended sediment dynamics in the main Danshui-River estuary. The model results reveal that the suspended sediment may be trapped in the deeper section of the river. Higher vertical diffusivity slightly increased SSC because of greater bottom stress during the ebb tide. Under extreme freshwater-discharge conditions, SSC increased considerably at both the surface and bottom layers of the water column, and ETM shifted its location upstream. When we change the bathymetry near the Guandu Bridge in our model, ETM extends its range a further 5.0 km from the river estuary because of higher velocity.
机译：这项研究提出了一个带有悬浮泥沙输送模块的三维非结构网格水动力模型在台湾淡水河河口系统及其邻近沿海海域的结合和应用。该模型已通过2010年观察到的数据进行了验证：水面高程，纵向速度，盐度和悬浮沉积物浓度（SSC）。模拟与观察结果定量一致。将验证的模型用于数值实验，以研究淡水河主要河口的河口浊度最大值（ETM）的形成以及垂直混合，不同的淡水排放条件和水深变化对悬浮泥沙动力学的影响。模型结果表明，悬浮的泥沙可能被截留在河的较深部分。由于退潮期间更大的底部应力，较高的垂直扩散系数会稍微增加SSC。在极端的淡水排放条件下，水柱的表层和底层的SSC均显着增加，ETM将其位置向上游移动。当我们在模型中更改关渡大桥附近的水深时，由于速度较高，ETM会将其范围扩大到距河口5.0公里。

著录项

  • 来源
    《Applied Mathematical Modelling》 |2015年第9期|2570-2586|共17页
  • 作者

    Wei-Bo Chen; Wen-Cheng Liu; Ming-Hsi Hsu; Chi-Chuan Hwang;

  • 作者单位

    National Science and Technology Center for Disaster Reduction, New Taipei City 23143, Taiwan;

    Department of Civil and Disaster Prevention Engineering, National United University, Miaoli 36063, Taiwan,Taiwan Typhoon and Flood Research Institute, National Applied Research Institute, Taipei 10093, Taiwan;

    Department of Civil and Disaster Prevention Engineering, National United University, Miaoli 36063, Taiwan,Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 10617, Taiwan;

    Department of Engineering Science and Supercomputing Research Center, National Cheng Kung University, Tainan 70101, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Suspended sediment transport model; Danshui-River estuary; Numerical experiments; Estuarine turbidity maximum;

    机译：悬浮泥沙运移模型;淡水河口;数值实验;河口浊度最大;

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