...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in Water Resources >A new modeling approach for simulating microtopography-dominated, discontinuous overland flow on infiltrating surfaces
【24h】

A new modeling approach for simulating microtopography-dominated, discontinuous overland flow on infiltrating surfaces

机译：一种新的建模方法，用于模拟在渗透表面上以微地形为主的不连续陆上流动

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

Realistic modeling of discontinuous overland flow on irregular topographic surfaces has been proven to be a challenge. This study is aimed to develop a new modeling framework to simulate the discontinuous puddle-to-puddle (P2P) overland flow dynamics for infiltrating surfaces with various microtopographic characteristics. In the P2P model, puddles were integrated in a well-delineated, cascaded drainage system to facilitate explicit simulation of their dynamic behaviors and interactions. Overland flow and infiltration were respectively simulated by using the diffusion wave model and a modified Green-Ampt model for the DEM-derived flow drainage network that consisted of a series of puddle-based units (PBUs). The P2P model was tested by using a series of data from laboratory overland flow experiments for various microtopography, soil, and rainfall conditions. The modeling results indicated that the hierarchical relationships and microtopographic properties of puddles significantly affected their connectivity, filling-spilling dynamics, and the associated threshold flow. Surface microtopography and rainfall characteristics also exhibited strong influences on the spatio-temporal distributions of infiltration rates, runoff fluxes, and unsaturated flow. The model tests demonstrated its applicability in simulating microtopography-dominated overland flow on infiltrating surfaces. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在不规则地形表面上对不连续的陆上水流进行逼真的建模已被证明是一个挑战。这项研究旨在开发一个新的建模框架，以模拟具有各种微地形特征的浸润表面的不连续点对点（P2P）陆上流动动力学。在P2P模型中，将水坑集成到轮廓分明的级联排水系统中，以促进对其动态行为和相互作用的显式仿真。使用由一系列基于水坑的单元（PBU）组成的DEM派生的排水网络，分别使用扩散波模型和改进的Green-Ampt模型对陆上径流和入渗进行了模拟。通过使用来自实验室陆上流量实验的一系列数据对P2P模型进行测试，这些数据用于各种微地形，土壤和降雨条件。建模结果表明，水坑的层次关系和微观地形特性显着影响了它们的连通性，填充-起泡动力学和相关的阈值流量。表面微观形貌和降雨特征也对入渗率，径流通量和非饱和流的时空分布表现出强烈的影响。模型测试证明了其在模拟微地形为主的渗透表面上的陆上流动的适用性。 （C）2015 Elsevier Ltd.保留所有权利。

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