Fundamental study of ventilation in air layer in clothing considering real shape of the human body based on CFD analysis
Fundamental study of ventilation in air layer in clothing considering real shape of the human body based on CFD analysis
复制标题
DOI：
10.1016/j.buildenv.2016.01.028
复制
发表时间：
2016-04
影响因子：
7.4
通讯作者：
S. Takada;Ayaha Sasaki;R. Kimura
中科院分区：
文献类型：
--
作者：
S. Takada;Ayaha Sasaki;R. Kimura
为了正确地预测热舒适性，使用人体的热模型，热量和水分在衣服和周围的传递以及人体的热生理反应必须进行评估。在服装内部和周围热湿传递的建模阶段中，服装空气层的通风是最难量化的因素之一。服装中的低空气速度和空气层的复杂形状使测量复杂化。在本研究中，计算流体动力学（CFD）分析周围的人体考虑到空气层的衣服，而不是测量。通过导入由激光扫描仪获得的三维（3D）形状数据，通过CFD分析观察了在典型室内环境条件下穿着单层衣服的成年人的衣服内和周围的空气分布。阐明了穿着人体周围空气流动的典型特征，并确定了服装空气层通风对服装下皮肤表面热流的影响是最小的。此外，CFD分析的结果与暖体假人实验的结果一致，验证了CFD分析。
To properly predict thermal comfort using a thermal model of the human body, heat and moisture transfer in and around clothing as well as the thermophysiological response of the human body must be evaluated. Among the phases for modeling heat and moisture transfer in and around clothing, ventilation in the air layer in clothing is one of the most difficult elements to quantify. The low air velocity in clothing and the complex shape of the air layer complicates measurement. In this study, computational fluid dynamics (CFD) analysis around the human body considering the air layer in clothing was conducted instead of measurement. By importing three-dimensional (3D) shape data obtained by a laser scanner, the air distribution in and around clothing was observed by CFD analysis, for an adult human wearing single-layered clothing in typical indoor environmental conditions. The typical characteristics of the air flow around a clothed human body were clarified, and the influence of the ventilation of clothing air layers on the heat flux at the skin surface under the clothing was determined to be minimal. In addition, the results of the CFD analysis were consistent with those of a thermal manikin experiment, validating the CFD analysis.