| 梳齿密封流动参数传递分析模型 |
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| 引用本文： | 郭瑞,杨建刚. 梳齿密封流动参数传递分析模型[J]. 机械工程学报, 2009, 45(4). DOI: 10.3901/JME.2009.04.281 |
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| 作者姓名： | 郭瑞 杨建刚 |
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| 作者单位： | 东南大学火电机组振动国家工程研究中心,南京,210096;东南大学火电机组振动国家工程研究中心,南京,210096 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 针对梳齿密封流动参数随齿数增多计算量非线性增大的问题,提出流动参数传递分析模型.以单个齿或腔为分析的基本单元,由计算或试验数据得出参考点,用径向基神经网络建立单元前后断面的传递关系.按连续性条件沿流动方向将所有单元串联,从入口递推至出口,施加出口边界条件对各断面上流动参数迭代求解.以某梳齿密封为例,在双控制体模型数据基础上建立单元映射关系,进而组成传递模型,求解各腔内流动参数.结果表明新模型用较少的配置点就能精确得出各腔内流动参数,迭代方法收敛.该模型中一个单元的分析模型适用于同类单元,不需重复建模,可有效减少计算量.单元模型参考点可选用多种数据,易于扩展.
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| 关 键 词： | 梳齿密封 传递模型 双控制体 |
Transfer Model for the Analysis of Labyrinth Seal Flow |
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| GUO Rui,YANG Jiangang. Transfer Model for the Analysis of Labyrinth Seal Flow[J]. Chinese Journal of Mechanical Engineering, 2009, 45(4). DOI: 10.3901/JME.2009.04.281 |
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| Authors: | GUO Rui YANG Jiangang |
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| Affiliation: | National Engineering Research Center of Turbo-Generator Vibration;Southeast University;Nanjing 210096 |
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| Abstract: | Labyrinth seal plays an important role in the rotor dynamics stability of rotating machinery.The calculation time of traditional models increases significantly with the increase of the number of seal teeth.For this reason, a new transfer model of labyrinth seal is set up.A single tooth or cavity is considered as the basic element in this model.The single seal element model is set up by using radial basis function neutral net work.All of the seal elements are connected in series along the flow direction acco... |
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| Keywords: | Labyrinth seal Transfer model Two-control-volume model |
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