摘要
针对建筑室内壁面结露位置问题,利用计算流体力学(CFD)方法,数值模拟室内多组热瑞利数和湿瑞利数作用下自然对流,分析室内空气相对湿度分布,判断室内冷凝发生的可能区域。研究结果表明:当温度梯度和水蒸气质量分数梯度方向相同时,室内流动加强;反之,流动减弱;室内空气流动结构直接影响室内相对湿度的分布,相对湿度最大点位于水分质量分数高的壁面上部,且随着流动强度增大沿着流动方向移动。
In view of the problem of the location of indoor wall condensation, simulates numerically the indoor natural convection under the action of thermal Rayleigh numbers and moisture Rayleigh numbers by the the method of computional fluid dynamics（CFD）, and analyses the indoor air relative humidity distribution and determines the indoor possible conden-sation areas. The results indicate that the indoor air flow strengthens when the temperature gradient and the water vapor mass fraction gradient are in the same direction, otherwise it decreases. The indoor air flow structure directly affects the indoor relative humidity, and the point of maximum relative humidity locates at the wall of high moisture fraction, which moves along the flow direction with the increased flow intensity.
出处
《湖南工业大学学报》
2015年第1期1-9,共9页
Journal of Hunan University of Technology
基金
科技部十二五科技支撑计划子课题基金资助项目(2011BAJ03B07)
关键词
计算流体力学
相对湿度
结露
computational fluid dynamics
relative humidity
condensation
