Wind Pressure and Air Flow in a
Full-Scale Building Model under Cross Ventilation
Takao Sawachi1,
Ken-ichi Narita2, Nobuyoshi Kiyota3
Hironao Seto1, Shigeki Nishizawa1 and Yuumi
Ishikawa1
1Building
Research Institute, Ibaraki, Japan, 2Nihon Institute of Technology,
Saitama, Japan
,
3Hiroshima Institute of Technology, Hiroshima, Japan
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Abstract
The observation of wind pressure
acting on the wall and floor of a full-scale building model under cross
ventilation was carried out. The measurement of air flow was also undertaken,
and the existing prediction theory of the air flow rate, namely the orifice flow
equation, including the discharge coefficient, was evaluated for its accuracy.
At the same time, a method of predicting the discharge coefficient has been
proposed and tested. In conclusion, a tentative relationship between the
discharge coefficient and the difference of wind pressure coefficient across the
opening has been developed. In addition, the background concerning the
difficulty of using the orifice flow equation has been described.
Key words:
wind pressure, cross ventilation, full scale building model, air flow
rate, wind tunnel, discharge coefficient, orifice flow equation.
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