Modeling of heat, air and moisture transfer in clothing air layer based on ventilation dynamics

2015 Fiscal Year Final Research Report

• Project/Area Number: 25630239
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Architectural environment/Equipment
• Research Institution: Kobe University
• Principal Investigator: Takada Satoru 神戸大学, 工学(系)研究科(研究院), 准教授 (20301244)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 着衣 / 温熱快適性 / 数値流体力学 / 換気 / モデル / 空気層 / 人体形状

Outline of Final Research Achievements

To properly predict thermal comfort using a thermal model of the human body, heat and moisture transfer in and around clothing must be evaluated. However, the low air velocity in clothing and the complex shape of the air layer complicates the modeling of ventilation in clothing. In this study, computational fluid dynamics (CFD) analysis around the human body considering the air layer in clothing was conducted to quantitatively grasp the air distribution in and around clothing by importing real shape data obtained by a laser scanner, for an adult human wearing single-layered clothing. 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 typical indoor environmental conditions. In addition, application of a simpler model using ventilation calculation to this problem was tried based on the results of CFD analysis.

Free Research Field

建築環境工学