流体机械

2008, No.436(10) 19-23

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提高工业厂房自然通风潜力的新途径研究
Research on the New Way to Improve Natural Ventilation Potential for Industrial Building

李刚;邹声华;李孔清;
LI Gang,ZOU Sheng-hua,LI Kong-qing(Hunan University of Science and Technology,Xiangtan 411201,China)

摘要(Abstract):

基于自然通风基本理论和应用数值模拟的方法,在稳态条件下,借助k-ε湍流模型,对有(无)考虑地表效应时厂房内的自然通风进行了对比研究。通过对数值计算结果的分析,发现地表效应得以充分体现的最大室外风速为1.5m/s。研究过程中,数值计算结果与实际测量结果基本吻合,证明了计算的可靠性。提出的数值模拟方法为自然通风计算及设计提供了新思路,揭示了地表效应影响自然通风的机理,为进一步挖掘自然通风潜力提供了新途径。
Effects of natural ventilation impacted by ground effect or ignored it in lofty workshop was studied based on basic theory of natural and application of numerical simulation.The result shows that the maximum velocity of wind outside is 1.5m/s,which makes the ground effect be reflected fully.Because of anastomosis between site survey and results from numerical model and calculation,the method of simulation is a way to research,computation and design of natural ventilation.Dynamic mechanism of ground effect influence on natural ventilation was opened out,and the theory of natural ventilation was substantiated.And it accordingly offers the new ways to dig deeply the potential of natural ventilation.

关键词(KeyWords): 自然通风;热车间;地表效应;湍流模型;数值模拟
natural ventilation;heat workshop;ground effect;turbulent model;numerical simulation

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基金项目(Foundation): 湖南省教育厅资助科研重点项目(08A018)

作者(Author): 李刚;邹声华;李孔清;
LI Gang,ZOU Sheng-hua,LI Kong-qing(Hunan University of Science and Technology,Xiangtan 411201,China)

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