Numerical Simulation  and Wind-resistant Optimization of Wind Pressure on Concave-roofed Low-rise Building with Eaves

Abstract

Abstract:

Based on Fluent and Re- normalization group(RNG) k-ε model, the wind pressure distribution around concave low-rise buildings with eaves in southeastern coastal areas of China was numerically investigated. The influence of roof pitch, wind direction and cornice forms on the mean wind pressure over the roof and the wind around the building were mainly analyzed. The results show that the wind pressure over the roof is closely related to the parameters above. The wind pressure over the windward roof decreases while that over the leeward roof increases with the increase of roof pitch. Furthermore, the cornices can greatly change the average wind pressure coefficients of the subdomains on roof, making it possible to optimize wind-resistant by using eaves on roofs.

Key words: low-rise building, concave roof, numerical simulation, wind pressure, windresistant optimization

CLC Number:

LI Junlong，ZHOU Dai，CHEN Yiran，JI Qing,MA Jun. Numerical Simulation and Wind-resistant Optimization of Wind Pressure on Concave-roofed Low-rise Building with Eaves[J]. Journal of Shanghai Jiaotong University, 2013, 47(06): 856-861.

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Numerical Simulation and Wind-resistant Optimization of Wind Pressure on Concave-roofed Low-rise Building with Eaves

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