摘要
根据质量守恒和能量守恒定律建立土壤热湿迁移的数学模型,采用有限差分法建立节点处离散方程并进行数值求解.采用3种不同土壤进行研究分析,得到不同土壤在蓄热过程中各节点处温度和湿度值,通过计算机编程求解数学模型,探求土壤热湿迁移过程的规律.土壤热湿传递的作用范围是随着含湿量的增大而逐渐增大的;同时土壤随其自身含湿量的增大,内部各节点的水分增加期以及水分减少期时间变长.
According to the law of mass and energy conservation,the paper establishes mathematical model of soil heat and moisture migration by using the mathematical thinking of finite difference to establish node discrete equations,and solves the equations through the numerical method.It also researches and analyzes through three kinds of soil,gets the soil temperature and moisture values for each node in the regenerative process and solving the mathematical models,and then explores the law of soil heat and moisture migration process.Scope of the soil heat and moisture migration increases as the moisture content increases;While with the soil moisture content increasing,water increase period and reduce period become longer.
出处
《青岛理工大学学报》
CAS
2015年第6期68-74,共7页
Journal of Qingdao University of Technology
基金
山东省自然科学基金资助项目(51376164)
关键词
热湿迁移
蓄热
温度值
湿度值
数值模拟
heat and moisture migration
regenerative
temperature values
humidity values
numerical simulation
