Three-dimensional modelling of coupled leachate and gas flow in bioreactor landfills

被引：29
作者：
Feng, Shi-Jin [1 ]
Lu, Shi-Feng [1 ]
Chen, H. X. [1 ]
Fu, Wen-Ding [1 ]
Lu, Fan [2 ]
机构：
[1] Tongji Univ, Minist Educ, Dept Geotechn Engn, Key Lab Geotechn & Underground Engn, Shanghai 200092, Peoples R China
[2] Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China
来源：
COMPUTERS AND GEOTECHNICS | 2017年 / 84卷
基金：
中国国家自然科学基金;
关键词：
Bioreactor landfill; Landfill gas; Two-phase flow; Three-dimensional model; Finite volume method; OpenFOAM; MUNICIPAL SOLID-WASTE; COMPRESSIBLE 2-PHASE FLOW; STEADY-STATE DESIGN; HYDRAULIC CONDUCTIVITY; VERTICAL WELLS; LIQUIDS ADDITION; MSW SETTLEMENT; RECIRCULATION; STRATEGIES; INJECTION;
D O I：
10.1016/j.compgeo.2016.11.024
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A three-dimensional two-phase flow model for leachate and gas transportation in bioreactor landfills has been developed based on OpenFOAM. Darcy's law and the van Genuchten soil-water retention curve model are incorporated into the governing equations for leachate and gas flow. A modified Picard iteration method is introduced to solve the model. The developed model is effectively verified by published results. A three-dimensional conceptual landfill cell with leachate recirculation well and gas collection well is simulated. The results show that leachate recirculation is beneficial for gas collection, and the effect of gas on leachate recirculation can be neglected if the gas collection well is working. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：138 / 151
页数：14
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