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논문 기본 정보

자료유형
학술저널
저자정보
Li, Cong (Interdisciplinary Graduate School of Engineering Science, Kyushu University) Ito, Kazuhide (Interdisciplinary Graduate School of Engineering Science, Kyushu University)
저널정보
한국초고층도시건축학회 International journal of high-rise buildings International journal of high-rise buildings 제1권 제2호
발행연도
2012.1
수록면
107 - 116 (10page)

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The overarching objective of this study is to predict the convective heat transfer around a human body under forced strong airflow conditions assuming a strong wind blowing through high-rise buildings or an air shower system in an enclosed space. In this study, computational fluid dynamics (CFD) analyses of the flow field and temperature distributions around a human body were carried out to estimate the convective heat transfer coefficient for a whole human body assuming adult male geometry under forced convective airflow conditions between 15 m/s and 25 m/s. A total of 45 CFD analyses were analyzed with boundary conditions that included differences in the air velocity, wind direction and turbulence intensity. In the case of approach air velocity $U_{in}=25m/s$ and turbulent intensity TI = 10%, average convective heat transfer coefficient was estimated at approximately $100W/m^2/K$ for the whole body, and strong dependence on air velocity and turbulence intensity was confirmed. Finally, the formula for the mean convective heat transfer coefficient as a function of approaching average velocity and turbulence intensity was approximated by using the concept of equivalent steady wind speed ($U_{eq}$).

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