布袋除尘器进口烟道气体流动特性的数值分析 |
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引用本文: | 鲍敬云,张海茹,于贤群.布袋除尘器进口烟道气体流动特性的数值分析[J].工业安全与环保,2016(6):48-50. |
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作者姓名: | 鲍敬云 张海茹 于贤群 |
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作者单位: | 1. 乐金显示 南京 有限公司环境与安全Team南京210046;2. 南京圣诺热管有限公司设计院南京210009;3. 南京师范大学能源与机械工程学院南京210042 |
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基金项目: | 国家自然科学基金(50976049),江苏省自然科学基金(BK2011788)。 |
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摘 要: | 通过计算流体软件FLUENT对布袋除尘器进口烟道进行研究,应用k-ε湍流模型对烟道在冬季极端恶劣情况下的强制对流散热的流动特性进行了模拟,详细讨论了不同截面的速度场、温度场、压力等分布。结果表明:低温烟道在不保温的情况下,在进入布袋除尘器前仍具有较高温度;烟道直段的降温速率约为0.2℃/m,弯头较集中区域,降温速率约为0.5℃/m;在出口区域,烟气温度出现"反弹"现象;烟道弯头处的冲刷较严重。
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关 键 词: | 烟道 流动特性 数值分析 |
Numerical Analysis on the Properties of Flue Gas in Inlet Duck of Bag Filter |
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Abstract: | In this paper ,the software FLUENT is used to conduct studies on the bag filter inlet duck ,the k-εturbulent model is applied to simulate the flowing properties of compulsory convection under extreme weather in winter and the veloci-ty ,temperature and pressure distribution of sections in flue duct is discussed in detail .The results show that the temperature is still higher without conservation materials ,the rate of temperature is 0 .2 ℃/m in straight duct and 0 .5 ℃ /m in bend pipes ,the temperature of outlet is increased rapidly with the flue states and the bend pipes are scoured fiercely . |
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Keywords: | duct flow property numerical analysis |
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