摘要
基于多孔介质渗流力学-热力学理论,建立了非等温条件下土壤中水-热耦合迁移的数学模型,并运用分离变量法和拉普拉斯(Laplace)变换对模型进行解析求解;通过算例分析,表明温度对非饱和土壤中水分迁移的影响。本文所得结果及结论,对于农田水利保护和地下水资源的利用具有重要的实际应用价值和理论意义.
Based on the theory of mechanics of porous seepage and thermodynamics, a coupled mathematical model of heat and moisture transfer in unsaturated zones of soil in condition of transient temperature is established based on Darcy抯 law, mass conservation law and Fourier law. Furthermore, separation of variables and Laplace changes are adopted to get the analytical solutions of the model. The analysis of the example indicates that the temperature is effective in the moisture migration in unsaturated zones of soil. Thus the results possess significant theory meaning and practice value for protection of agricultural water and utilization of underground water resource.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2002年第6期741-744,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家教育部资助项目(2000172)
辽宁省自然科学技术基金资助项目(200081021)
