2D numerical simulation for simultaneous heat, water and gas migration in soil bed under different environmental conditions
2D numerical simulation for simultaneous heat, water and gas migration in soil bed under different environmental conditions
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DOI：
10.1007/s002310050264
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发表时间：
1998-11
影响因子：
2.2
通讯作者：
W. Liu;X. Zhao;K. Mizukami
中科院分区：
文献类型：
--
作者：
W. Liu;X. Zhao;K. Mizukami
基于体积平均法，提出了研究不同环境条件下非饱和多孔土中同时传热、水和气体（空气加水蒸气）的通用数学模型。进行稳态二维数值模拟是为了获得受限土层中田间特征的准确图像，这可能有助于为农业应用提供必要的信息。通过计算结果分析了环境温度、相对湿度、辐射热通量和风速等环境参数对无植物根系土壤中传输过程的影响。
A general mathematical model for investigating simultaneous heat, water and gas (air plus vapor) transfer in unsaturated porous soil under different environmental conditions is presented based on the volume-averaging method. Two-dimensional numerical simulation in steady state is conducted for obtaining accurate images of field characteristics in a confined soil bed, which might be useful to provide necessary information for agricultural applications. Various effects of environmental parameters, such as ambient temperature, relative humidity, radiative heat flux and wind speed, on transport processes in soil without plant roots are analyzed through the calculating results in the present paper.