...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Mathematical Modelling >Large-strain numerical solution for coupled self-weight consolidation and contaminant transport considering nonlinear compressibility and permeability
【24h】

Large-strain numerical solution for coupled self-weight consolidation and contaminant transport considering nonlinear compressibility and permeability

机译：考虑非线性可压缩性和渗透性的耦合自重固结和污染物传输的大应变数值溶液

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

Based on the one-dimensional (1D) consolidation equation and advection-dispersion transport equation, this paper presents a large-strain numerical solution for coupled self-weight consolidation and contaminant transport in saturated deforming porous media considering nonlinear compressibility and permeability relationships. The finite difference method is used to solve the governing equations for consolidation and transport. The proposed numerical solution for consolidation accounts for vertical strain, soil self-weight, and non-linearly changing compressibility and hydraulic conductivity during consolidation. The solution for solute transport accounts for advection, diffusion, mechanical dispersion, linear and nonlinear equilibrium sorption, and porosity-dependent effective diffusion coefficient. The proposed numerical solution is verified against a self-weight consolidation field tank test, an analytical solution in the literature, and the CST1 numerical model. Using the verified solution, a series of parametric study is conducted to investigate the effect of several important parameters on the contaminant transport process for confined disposal of dredged contaminated sediments. The results indicate that the consolidation process and contaminant transport process induced by soil self-weight- can be very different from those induced by the more traditional external surcharge loading. Treating the self-weight loading as traditional external surcharge loading can underestimate the rate of contaminant outflow, especially in the early times. The compressibility and permeability relationships of sediment and the type of loading (i.e., self-weight loading versus external surcharge loading) can all significantly affect the contaminant transport process for confined disposal of dredged contaminated sediment.
机译：基于一维（1D）合并方程和平散 - 分散传递方程，本文呈现了考虑非线性可压缩性和渗透性关系的饱和变形多孔介质中偶联的自重固结和污染物传输的大应变数值溶液。有限差分法用于解决整合和运输的控制方程。用于固结的拟议数值溶液用于垂直应变，土壤自重和在整合期间的不直线性变化的可压缩性和液压导电性。溶质转运的溶液用于平程，扩散，机械分散，线性和非线性平衡吸附和孔隙依赖性有效扩散系数。该提出的数值溶液通过自重固结场罐试验，文献中的分析解决方案和CST1数值模型验证。使用经过认证的解决方案，进行了一系列参数研究，以研究几个重要参数对疏浚污染沉积物的狭窄处置污染物运输过程的影响。结果表明，土壤自重诱导的固结过程和污染物运输过程与由更传统的外部附加费载荷引起的那些。作为传统的外部附加费加载的自身重量负荷可以低估污染物流出速度，特别是在早期。沉积物的可压缩性和渗透性和载荷类型（即，自我重量负荷与外部附加费加载）全部可以显着影响疏浚污染沉积物的狭窄处理的污染物运输过程。

著录项

  • 来源
    《Applied Mathematical Modelling》 |2020年第12期|916-932|共17页
  • 作者

    Hefu Pu; Kun Wang; Jinwei Qiu; Xunlong Chen;

  • 作者单位

    Institute of Geotechnical and Underground Engineering Huazhong University of Science and Technology Wuhan Hubei China;

    Institute of Geotechnical and Underground Engineering Huazhong University of Science and Technology Wuhan Hubei China;

    Institute of Geotechnical and Underground Engineering Huazhong University of Science and Technology Wuhan Hubei China;

    Institute of Geotechnical and Underground Engineering Huazhong University of Science and Technology Wuhan Hubei China;

  • 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

    Saturated deforming porous media; Self-weight consolidation; Contaminant transport; Numerical solution;

    机译：饱和的变形多孔介质;自我重量整合;污染物;数值解决方案;

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