| 基于STAR-CCM＋的歧管式催化转换器流场分析 |
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| 引用本文： | 刘小平,吴兰芳. 基于STAR-CCM＋的歧管式催化转换器流场分析[J]. 天津汽车, 2011, 0(2): 29-32 |
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| 作者姓名： | 刘小平 吴兰芳 |
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| 作者单位： | 天津一汽夏利汽车股份有限公司产品开发中心 |
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| 摘 要： | 利用计算流体动力学（CFD）软件STAR—CCM＋,建立了某4缸汽油发动机的歧管式催化转换器的三维数值计算模型。运用多孔介质模型模拟催化转化器载体的内部流动,对催化转化器的稳态流动进行了数值模拟,对发动机不同气缸工作时气体流动分布、流动不均匀性和排气背压进行数值计算。从CAE的角度分析了催化转化器进口端面破损及进出气端颜色不均的原因,为歧管式催化转化器结构设计和性能改进提供理论依据。
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| 关 键 词： | 催化转化器 CFD 优化设计 载体 压力损失 |
Flow Field Analysis of Manifold-type Catalytic Converter Based on STAR-CCM+ |
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| LIU Xiaoping,WU Lanfang. Flow Field Analysis of Manifold-type Catalytic Converter Based on STAR-CCM+[J]. Tianjin AUTO, 2011, 0(2): 29-32 |
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| Authors: | LIU Xiaoping WU Lanfang |
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| Abstract: | This paper establishes the mathematical 3D model of manifold-type catalytic converter on a four-cylinder gasoline engine based on the CFD software of STAR-CCM+.By using porous media approach to simulate the internal flow of catalyst carrier and conducting mathematical simulation of steady flow of the catalytic converter,this paper conducts mathematic simulation of flow distribution,flow unevenness coefficient and pressure loss inside catalytic converters with different working cylinders.What's more,from the... |
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| Keywords: | CFD |
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