螺旋槽气膜密封微间隙流场的三维数值模拟

摘要

根据端面、柱面气膜密封的结构特点,建立端面螺旋槽与柱面螺旋槽气膜密封三维数值分析模型,基于有限体积法利用Fluent软件对端面、柱面气膜密封三维流场特性进行数值模拟研究.与试验结果和相关文献的算例比较验证了该三维数值模拟方法的正确性,为进一步进行密封界面表面状态模拟分析及气膜密封的设计应用提供了理论基础.%Based on the structure characteristics of the gas face and cylinder seal,the three dimensional model of spiral groove gas face and cylindrical seal were built, and the three dimensional micro-gap flow field was simulated by Fluent. The numerical simulation results agree well with the experimental data and theoretical value, which proves that it is feasible to simulate the micro-gap flow field of spiral groove gas film seal by the three dimensional numerical method. This research provides theoretical basis for further analysis of seal interface state and the design of gas film seal.