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A different approach to the network method: continuity equation in flow through porous media under retaining structures
Engineering Computations ( IF 1.5 ) Pub Date : 2020-05-20 , DOI: 10.1108/ec-10-2019-0493
Encarnación Martínez-Moreno , Gonzalo Garcia-Ros , Ivan Alhama

This study aims to present a new numerical model for the simulation of water flow through porous media of anisotropic character, based on the network simulation method and with the use of the free code Ngspice.,For its design, it starts directly from the flow conservation equation, which presents several advantages in relation to the numerical simulation of the governing equation in terms of the potential head. The model provides very precise solutions of streamlines and potential patterns in all cases, with relatively small meshes and acceptable calculation times, both essential characteristics when developing a computational tool for engineering purposes. The model has been successfully verified with analytical results for non-penetrating dams in isotropic media.,Applications of the model are presented for the construction of the flow nets, calculation of uplift pressures, infiltrated flow and average exit gradient in anisotropic scenarios with penetrating dams with and without sheet piles, being all this output information part of the decision process in ground engineering problems involving these retaining structures.,This study presents, for the first time, a numerical network model for seepage problems that is not obtained from the Laplace's governing equation, but from the water flow conservation continuity equation.

中文翻译:

网络方法的另一种方法:在挡土结构下通过多孔介质流动的连续性方程

本研究旨在提出一种新的模拟水流通过各向异性多孔介质的数值模型, 基于网络模拟方法, 使用免费代码 Ngspice。, 其设计直接从流动守恒开始方程,它在潜在水头方面相对于控制方程的数值模拟具有几个优点。该模型在所有情况下都提供了非常精确的流线和潜在模式的解决方案,具有相对较小的网格和可接受的计算时间,这是开发用于工程目的的计算工具时的基本特征。该模型已通过各向同性介质中非渗透大坝的分析结果成功验证。, 介绍了该模型在流网建设中的应用,
更新日期:2020-05-20
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