1507 呼吸による顔近傍浮遊粒子の挙動モデル

概要

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It is known that fine particles can penetrate into the alveolus of the human lung and influence human health. However, it is not well understood how close to the human face aerosols can reach the nose. In order to elucidate the aerosol behavior in the vicinity of the human face with breathing condition (inhalation and exhalation), a two-dimensional turbulence model was employed to obtain the time-dependent airflows and particle transport. The capture rate of contaminants as a parameter of distance from the source and wind direction was determined. A two-dimensional standard k-ε turbulence model was used to obtain the time-dependent airflow distributions in the vicinity of human face with breathing was determined. Once the particles reach the nose, they are assumed to deposit in the human body. The time-dependent aerosols captured by the nose were evaluated as a parameter of distance from the source when the ambient air is still and in the presence of various wind directions.