Forces and Moments Due to Misalignment Vibrations in Annular Liquid Seals Using the Averaged Navier-Stokes Equations
Forces and Moments Due to Misalignment Vibrations in Annular Liquid Seals Using the Averaged Navier-Stokes Equations
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DOI：
10.1115/1.2833194
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发表时间：
1997-04
影响因子：
2.5
通讯作者：
M. Arghir;J. Frěne
中科院分区：
文献类型：
--
作者：
M. Arghir;J. Frěne
本文提出了一种计算在居中位置和湍流流态下运行的未对准环形液体密封中的力和力矩的方法。该方法基于扰动平均纳维-斯托克斯方程的数值积分，因此能够处理密封槽中的再循环流。由于在推导扰动流动方程时使用解析坐标变换，该方法仅限于光滑转子密封。扰动流动方程以适当的形式表达，以获得偏心和未对准密封件的单一表达式。边界条件是根据无滑移条件和对数定律获得的。使用 Kanemori 和 Iwatsubo (1994) 的直密封实验结果对该方法进行了验证。还包括与其他理论预测的比较。讨论了四槽迷宫密封中的力和力矩。
This paper presents a method to calculate forces and moments in misaligned annular liquid seals operating in centered position and turbulent flow regimes. The method is based on the numerical integration of the perturbed averaged Navier-Stokes equations so it has the capacity to treat recirculating flows in seal grooves. Due to the analytic coordinate transformation used in deriving the perturbed flow equations, the approach is limited to smooth-rotor seals. The perturbed flow equations are cast in an appropriate form in order to obtain a single expression for eccentric and misaligned seals. The boundary conditions are obtained from the no-slip conditions and from the logarithmic law. Validations of the method are made using the experimental results of Kanemori and Iwatsubo (1994) for a straight seal. Comparisons with other theoretical predictions are also included. Forces and moments in a four-grooves labyrinth seal are discussed.