非饱和土壤冻融过程中水、热耦合运移数值模拟研究  

Numerical Simulation of Water and Heat Transfer During Unsaturated Soil Freezing

作　　者：朱焱[1] 陈晓飞[1] 马巍[2] 邓友生[2] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州730000 [2]沈阳农业大学,辽宁沈阳110161

出　　处：《安徽农业科学》2007年第17期5216-5217,5282,共3页Journal of Anhui Agricultural Sciences

基　　金：冻土工程国家重点实验室开放基金项目(SKLFSE200303);辽宁省博士后基金;国家自然科学基金项目(40272102)资助

摘　　要：根据冻结条件下非饱和土壤水分运动和热量迁移的基本方程,推求冻土水热耦合迁移的数学模型。采用Grank-Nicolson格式的有限差分法,计算结果表明土壤水分、温度的计算值与实验值吻合较好。Based on the basic equations of simultaneous soil water and heat transfer during soil freezing, the coupled equation of moisture and heat was deduced. The equations were solved numerically by the finite difference method with Grank-Nicolson. As a result the simulated values of water content and temperature followed the measured values closely.

关 键 词：土壤冻结 水热迁移 水热耦合方程 

分 类 号：F293[经济管理—国民经济]