基于CFD的透平膨胀机轴向推力计算  

Estimation of Axial Thrust in Turbo Expander Based on CFD

作　　者：李超[1] 张国军[1] 程金明[1] 孙照岚 

机构地区：[1]兰州理工大学石油化工学院

出　　处：《化工机械》2015年第1期110-115,共6页Chemical Engineering & Machinery

摘　　要：为了准确地预测透平膨胀机的轴向推力,建立其力学分析模型和叶轮间隙、迷宫密封三维模型。通过受力分析,采用低Re数k-ε模型和Simplec算法,考虑机械磨损的影响,对透平膨胀机轴向推力进行了模拟计算,并将模拟结果与轴向推力经验公式计算结果进行比较。To predict the turbo-expander’s axial thrust accurately,a turbo-expander was chosen as an exam-ple,and the mechanical model and the three-dimensional model of the impeller clearance and labyrinth seal were built.Through analyzing the forces and using low Reynolds number k-εturbulence model and the SIM-PLEC algorithm,as well as considering the impact of leakage,the axial thrust acting on the impeller was simu-lated,and the simulation results and the results calculated by the empirical method were compared.

关 键 词：透平膨胀机 轴向推力 工作轮 增压轮 

分 类 号：TQ051.5[化学工程]