Numerical simulation of non-aqueous phase liquids migration in porous media

HU Li-ming; XING Wei-wei; WU Zhao-qun

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Numerical simulation of non-aqueous phase liquids migration in porous media

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- Numerical simulation of non-aqueous phase liquids migration in porous media
- Vol. 28, Issue 5, (2007)
- 作者机构：
  
  水沙科学与水利水电工程国家重点实验室/清华大学水利水电工程系,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： X705
- Online First：10 September 2013，
  
  Published：2007
- 稿件说明：
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HU Li-ming, XING Wei-wei, WU Zhao-qun. Numerical simulation of non-aqueous phase liquids migration in porous media[J]. 2007, 28(5).
DOI：

HU Li-ming, XING Wei-wei, WU Zhao-qun. Numerical simulation of non-aqueous phase liquids migration in porous media[J]. 2007, 28(5). DOI：

摘要

针对多孔介质中水、气和非水相流体(NAPLs)的多相流动特点，建立了非水相流体(NAPLs)污染物迁移模型，分析了非水相流体在土壤非饱和区和地下水系统中的运移规律。通过有限元数值解对轻非水相流体和重非水相流体在土壤系统中的迁移过程进行模拟，得到了污染物的时空分布特征和污染范围。计算结果表明，数值模拟方法能够合理地描述非水相流体的运移过程和污染特征。土体渗透性和污染物残余饱和度是其重要影响因素。

Abstract

Based on the theory for multiphase flow in porous media

analytical model for NAPL transport in soils is proposed and developed; and the transport behavior of NAPL in unsaturated soils and groundwater system is analyzed. Numerical simulation is employed to model the transport processes of LNAPLs and DNAPLs in subsurface system; and tempo-spatial distribution of NAPL and contamination extent are obtained. Numerical results show that the contamination characteristics of NAPLs can be reasonably described

which is significantly affected by intrinsic permeability of soils and residual saturation of NAPLs.

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