Dynamic force performance of annular gas seals at off-center conditions
Dynamic force performance of annular gas seals at off-center conditions
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DOI：
10.1080/10402009408983263
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Zhou Yang;L. Andrés;D. Childs
中科院分区：
文献类型：
--
作者：
Zhou Yang;L. Andrés;D. Childs
对偏心状态下气体环空密封的静、动态特性进行了数值分析。根据在现有试验台上观察到的条件，假定转子和定子表面等温。转子和定子的热流由体流换热系数来模拟。用一种高效的CFD算法求解了环形密封内整体湍流的非线性微分方程组。计算零阶和一阶流场的摄动法确定了密封的稳态响应和动态力系数
A numerical analysis to predict the static and dynamic performance characteristics of gas annular seals off-center conditions is presented. Isothermal rotor and stator surfaces are assumed according to conditions observed on an existing test rig. Heat flow to the rotor and stator is modeled by bulk-flow heat transter coefficients. The non-linear differential equations for the turbulent bulk flow in the annular seal are solved using an efficient CFD algorithm. A perturbation method for calculation of the zeroth- and first-order flow fields determines the seal steady-state response and dynamic force coefficients