TITLE:
Airflow Distribution Measurements around the Human Body Using a Thermal Manikin by Particle Image Velocimetry
AUTHORS:
Yuki Arinami, Shin-Ichi Akabayashi, Kunio Mizutani, Jun Sakaguchi
KEYWORDS:
Thermal Manikin, Heat Convection, Airflow Distribution, Particle Image Velocimetry, Natural Convection
JOURNAL NAME:
Journal of Flow Control, Measurement & Visualization,
Vol.5 No.3,
July
12,
2017
ABSTRACT: The human body is a heat source in a room. As the human body has a complex shape, it is difficult to accurately measure the airflow distribution around the human body using a conventional anemometer. This study measured the airflow distribution around a thermal manikin acting as a human body by visualization and particle image velocimetry (PIV). The thermal manikin was 1700 mm in height, and its surface temperature was set to 30oC. The experiments were performed in the conditions when the manikin was seated on a chair. The ambient air temperature and wind velocity were experimental variables. The airflow distribution around the manikin was reported by considering the relationships between convection and ambient wind velocity. There were no differences in the airflow distribution around the manikin due to the ambient air temperature when the wind velocity in the chamber was set as 1.0 m/s. Hence, it was assumed that the ambient wind velocity was dominant in this condition. Various airflow distributions were formed around the manikin due to the difference between the body surface temperature and the ambient air temperature in the case where the wind velocity in the chamber was set to approximately equal to 0.0 m/s.