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| Design and sim ulation of baffle of fume hood |
| LI Xun, WANG Xiao-Hua |
| College of Mechanics，Tianjin University，Tianjin 300072，China |
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Abstract To solve the poor adaptability of fume hood to smoke，the author designs a new type of baffle．and conducts numerical simulation on it by adopting K-ε turbulent flow model and twophase flow theory．The result of computation has shown that with a range of smoke quantity，the proposed baffle can effectively separate smoke from the inlet of fume hood and smoothly have the smoke pushed out．Its security and adjustability has been greatly improved．
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Published: 28 December 2004
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通风橱导流板的设计与模拟
为解决通风橱对烟气适应能力差的问题，设计了一种导流板．采用K-ε湍流模型，应用两相流理论．对通风橱的流场进行了数值模拟．计算表明，在一定的烟气量范围内，导流板能够有效地将烟气与通风橱的入口隔开，保证烟气的顺利排出，使通风橱的安全性和适应能力得到明显提高．
关键词：
导流板,
通风橱,
两相流,
数值模拟
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