Fundamental Study on Mechanisms of Airflow Sensation for Indoor Airflow Design

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K04725
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23020:Architectural environment and building equipment-related
• Research Institution: University of Fukui
• Principal Investigator: MOMOI YOSHIHISA 福井大学, 学術研究院工学系部門, 准教授 (40506870)
• Co-Investigator(Kenkyū-buntansha): 宮本 征一 摂南大学, 理工学部, 教授 (80273316)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 気流 / 気流感 / 温冷感 / CFD / 対流熱伝達率 / 風圧 / 熱流 / サーマルマネキン

Outline of Final Research Achievements

Although airflow greatly affects the thermal sensation in humans, there are few studies on the mechanism of the airflow sensation, and it has not been fully clarified yet. In this study, it is assumed that this airflow sensation is mainly caused by airflow, convection heat transfer, and static pressure on the surface of a human skin. In order to clarify the convective heat transfer from each part of the human body surface when exposed to a steady air flow, experiments were conducted using a thermal manikin (TM) with heat flux sensors and radiant heat flux sensors. Also, CFD simulation was conducted for the distribution of the air velocity, the convective heat transfer coefficient (CHTC) and the static pressure on the TM shape’s surface. The CFD results of the CHTC and static pressure for the whole body and each part of TM were compared with the experimental results and the previous research and examined for calculation accuracy.

Free Research Field

建築環境工学

Academic Significance and Societal Importance of the Research Achievements

本研究では、①サーマルマネキンによる対流熱伝達率及び静圧の把握，②バーチャルマネキンを用いたCFD解析，③3Dプリンタで作成した縮小模型人体での静圧測定を行い、各手法の精度検証を行いながら，④被験者による気流閾値に関する主観評価を得た。本研究では気流感に関する物理量及び心理量の関係を明らかにする上で重要となる基礎データを蓄積することができた。