本文建立涡动转子-迷宫密封三维CFD模型,计算高低式迷宫密封流场及流体激振力,并计算密封转子动特性,计算结果经Pugachev试验数据验证可靠.分析不同结构的高低式迷宫密封转子动力学特征,尤其是广泛应用于汽轮机高压级围带密封的前后凸台高低式迷宫密封结构.结果显示,在高低式迷宫密封中,凸台位置越靠后,主阻尼系数越小;对于前后凸台的高低式迷宫密封结构,去掉后凸台能提高转子稳定性.
参考文献
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| [2] | Toshio Hirano;Zenglin Guo;R. Gordon Kirk .Application of Computational Fluid Dynamics Analysis for Rotating Machinery - Part II: Labyrinth Seal Analysis[J].Journal of engineering for gas turbines and power: Transactions of the ASME,2005(4):820-826. |
| [3] | Alexander O. Pugachev;Ulrich Kleinhans;Manuel Gaszner .Prediction of Rotordynamic Coefficients for Short Labyrinth Gas Seals Using Computational Fluid Dynamics[J].Journal of engineering for gas turbines and power: Transactions of the ASME,2012(6):062501-1-062501-10. |
| [4] | 李雪松,黄典贵,李久华,徐建中.迷宫气封三维非定常流场及转子动特性数值仿真[J].机械工程学报,2003(04):136-140. |
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