太阳能-土壤源热能流体加热道路融雪系统融雪模型的建立  

STUDY ON THE HEAT AND MASS COUPLED SNOW MELTING MODEL FOR SOLAR-GROUND SOURCE COUPLED HEATED PAVEMENT

作　　者：徐慧宁[1] 谭忆秋[1] J.D.Spitler 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,哈尔滨150090 [2]俄克拉荷马州立大学,俄克拉荷马静水市74078

出　　处：《太阳能学报》2014年第5期802-808,共7页Acta Energiae Solaris Sinica

基　　金：国家十一五科技支撑计划(2006BAJ18B05)

摘　　要：综合考虑融化雪水在道路结构中的传递对道路材料热物理性质的影响,利用含水量作耦合项,建立太阳能-土壤源热能复合流体加热路面融雪系统的温-湿耦合融雪模型,运用显式有限差分法编制模型程序,实现融雪系统仿真。基于建立的模型,探讨计算深度、融雪目标等模型参数对太阳能-土壤源热能复合流体加热路面融雪系统融雪效果评价的影响,得到融雪模型合理的计算深度,并分析融雪目标与融雪系统设计热负荷间的关系。A two-dimensional heat and mass coupled model for the snow-melting process occurring on a solar- ground source coupled heated pavement based on Liu＇s model was described. The extended Darcy law and continuity equation were adopted to describe water flow caused by both moisture gradient and temperature gradient. To solve the complex nonlinear equation set, explicit finite difference method was used. Model development was described and its application to the impact of model parameters on the evaluation of snow melting performance was illustrated.

关 键 词：太阳能-土壤源热能 流体加热路面 融雪模型 传热传质 

分 类 号：U414[交通运输工程—道路与铁道工程]