Effect of Window Opening Percentage on the Air Flow Rate of Wind-Driven Natural Ventilation Rooms

According to the investigations of window opening percentage （WOP） of Shanghai in 2011, the WOP varies significantly from season to season and thus affects the air flow rate of natural ventilation rooms. A three-dlmensional computional fluid dynamic（CFD） model was applied to simulating the flow fiel...

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Published in东华大学学报（英文版） Vol. 29; no. 6; pp. 465 - 469
Main Author 王勇 钟珂 张宁波 亢燕铭
Format Journal Article
LanguageEnglish
Published School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China 2012
Subjects
natural ventilation
window opening percentage (WOP)
numerical simulation
correction factor
Online AccessGet full text
ISSN1672-5220

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Summary:According to the investigations of window opening percentage （WOP） of Shanghai in 2011, the WOP varies significantly from season to season and thus affects the air flow rate of natural ventilation rooms. A three-dlmensional computional fluid dynamic（CFD） model was applied to simulating the flow fields in a street canyon under different wind speed and WOP. The numerical simulations show that WOP has a significant influence on the static pressure distribution of the downwind building. Therefore, a correction factor k can be used for calculating the flow rate of wind- driven natural ventilation. The results show that k ranges from 0.43 to 0.49 when WOP is 4.44 % ; when WOP increases to 9.78 %, the correction factor k lies iN 0.32 and 0.36.
Bibliography:31-1920/N
According to the investigations of window opening percentage （WOP） of Shanghai in 2011, the WOP varies significantly from season to season and thus affects the air flow rate of natural ventilation rooms. A three-dlmensional computional fluid dynamic（CFD） model was applied to simulating the flow fields in a street canyon under different wind speed and WOP. The numerical simulations show that WOP has a significant influence on the static pressure distribution of the downwind building. Therefore, a correction factor k can be used for calculating the flow rate of wind- driven natural ventilation. The results show that k ranges from 0.43 to 0.49 when WOP is 4.44 % ; when WOP increases to 9.78 %, the correction factor k lies iN 0.32 and 0.36.
WANG Yong , ZHONG Ke , ZHANG Ning-bo , KANG Yan-ming School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
natural ventilation; window opening percentage （WOP） ;correction factor; numerical simulation
ISSN:1672-5220