摘要
利用多孔介质中的Darcy定律建立了一个多孔有机织物中热湿传递过程的数学模型,并提出了一个描3l。采用Crank-Nicolson方法数值求述多孔有机织物中液相水重力与表面张力的对比关系的数X=5gρldcLτlε12σcosε13解了该模型,得到了在相同初始和边界条件下,不同有机材料织物中的热湿传递过程,并给出了多孔有机织物中的水蒸汽的浓度场分布、温度场分布以及纤维中的含水量的分布。计算结果与实验结果是吻合的。
A mathematical model for simulating heat and moisture transfer in porous textiles is described. An alysis for the mathematical model of the liquid diffusion in the porous textiles by means of Darcy's Law is proposed. A number X=5gρ_ld_cLτ_lε~^(13)__l2σcosφε^(13)describing the ratio of the gravity to surface tension in the porous organic textiles is given. On the basis of Crank-Nicolson method, the distributions of the temperature, moisture concentration, and liquid water conternt in the porous textiles for the different degree of hygroscopicity are numerically computed by the technique. The numerical solutions indicate that this model is satisfactory.
出处
《计算力学学报》
CAS
CSCD
北大核心
2003年第6期641-648,共8页
Chinese Journal of Computational Mechanics
基金
国家自然科学基金(10102024)资助项目.
