【作者】 刘炳成； 刘伟； 范爱武；

【机构】 华中科技大学能源与动力工程学院；

【摘要】 建立描述存在干饱和层时的土壤热湿传递的数学模型,并就自然环境和恒定太阳辐照下两种情况进行数值模拟,获得不同环境条件下土壤中温度和湿分分布以及水分蒸发的动态特性,分析干饱和土壤层对土壤热湿迁移与水分蒸发以及温度对土壤湿分传输的影响。更多还原

【Abstract】 A general mathematical model for investigating simultaneous heat and moisture transfer and water evaporation in porous soil with unsaturated and dry regions was proposed based on the volume-averaging method and a set of governing equations were developed. By use of numerical method, the transient distributions of temperature and moisture inner soil under two different conditions, the natural condition and the steady solar radiation, were obtained. Both the influence of dry soil region on heat and moisture transfer in soil and water evaporation and the influence of temperature on moisture transport were analyzed in present paper.更多还原