Wind induced Internal Pressure in Buildings Based on Boundary Layer Theory

doi:10.11908/j.issn.0253-374x.2015.03.002

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Wind induced Internal Pressure in Buildings Based on Boundary Layer Theory
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                        10.11908/j.issn.0253-374x.2015.03.002
                    
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                        QUAN YongQUAN Yong
State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
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WANG YixiangWANG Yixiang
State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
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GU MingGU Ming
State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
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Clc Number:TU311.3
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Abstract:

Since wind induced internal pressure of a building with a large opening is usually caused by rolling viscous turbulent fluid and Bernoulli equation cannot be applied to this situation completely,a new governing equation for wind induced internal pressure with a single opening was derived using the boundary layer theory and the mixing length theory. Using the standard four order Runge Kutta numerical method to solve internal pressure governing equation,the influence of the energy loss coefficient on the calculation results of the proposed equation was analyzed and the calculation results of the proposed equation was compared with those of empirical formula.The results show that the internal pressure of the energy dissipation is caused by the turbulent diffusion term. Moreover, the physical meaning of the energy dissipation of the opening is further clarified.

Key words:building structure; wind induced internal pressure; boundary layer; mixing length theory

Reference

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QUAN Yong, WANG Yixiang, GU Ming. Wind induced Internal Pressure in Buildings Based on Boundary Layer Theory[J].同济大学学报(自然科学版),2015,43(3):0332~0336

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Received:May 14,2014
Revised:December 10,2014
Adopted:July 28,2014
Online: March 18,2015
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