Numerical analysis of factors influencing air flow pattern during air sparging

被引:0
作者
Liu, Zhibin [1 ]
Chen, Zhilong [1 ]
Du, Yanjun [1 ]
Fang, Wei [1 ]
机构
[1] School of Transportation, Southeast University
来源
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2013年 / 43卷 / 02期
关键词
Air saturation; Air sparging; Flow pattern; Numerical simulation; Radius of influence;
D O I
10.3969/j.issn.1001-0505.2013.02.028
中图分类号
学科分类号
摘要
Based on the introduction of the governing equations of gas water two-phase flow during air sparging, the influence of different parameters on the air flow pattern in some contaminated site was studied through numerical analysis. The research results are as follows. The intrinsic permeability of soil has great influence on the radius of influence (ROI) and air distribution. ROI decreases with the increase of the soil permeability. As the flow rate of air is raised, ROI will increase a little. Once the stable flow pattern is formed, more flow rate will contribute little to the increase of ROI. The depth of air sparging well under the water table almost has no effect on ROI, therefore position of the well should be mainly determined by the depth of contamination scope. In addition, the air transportation is limited in upper reaches but enhanced in lower reaches, so the ROI of lower reaches is higher than that of upper reaches.
引用
收藏
页码:375 / 379
页数:4
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