摘要
为深入探究水环境原位修复工程中具有可吸附能力的多孔基质域对于流体流场及可溶性污染物溶质运移的作用,根据生态滤坝的结构特征,人为构建基于宏观尺度的多孔基质随机填充模型,并通过数值模拟研究该结构对于流场和溶质运移的影响。研究发现流体流经基质填料区时,在基质填料空隙流动通道中渗透流动速率较快;在具有孔隙结构的基质材料流动通道中渗流流动速率较慢;入口流速大小对于多孔基质吸附水体中污染物的量有显著影响,流速越大,污染物被吸附至多孔基质上的量就越多。
To deeply explore the effect of porous matrix domain with adsorptive capacity on fluid flow field and sol⁃ute transport of soluble pollutants in water environment in-situ remediation engineering,a random filling model of porous matrix based on macro scale was artificially constructed according to the structural characteristics of ecologi⁃cal filter dam.The effect of the structure on flow field and solute transport was studied through numerical simulation method.When the fluid flows through the matrix packing area,the penetration flow rate is faster in the interstitial flow channel of the matrix packing.The seepage flow rate is slow in the matrix material flow channel with pore struc⁃ture.The inlet flow rate has a significant effect on the amount of pollutants adsorbed by the porous matrix.The larger the flow rate,the more pollutants are adsorbed to the porous matrix.
作者
戴言治
DAI Yanzhi(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)
出处
《低温建筑技术》
2022年第9期41-46,共6页
Low Temperature Architecture Technology
关键词
多孔基质
污染物运移
数值模拟
porous matrix
pollutant transport
the numerical simulation
