Numerical Modeling of Dynamic Sealing Behaviors of Spiral Groove Gas Face Seals
Numerical Modeling of Dynamic Sealing Behaviors of Spiral Groove Gas Face Seals
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DOI：
10.1115/1.1398291
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发表时间：
2002
影响因子：
2.5
通讯作者：
B. Ruan
中科院分区：
文献类型：
--
作者：
B. Ruan
建立了气体润滑螺旋槽端面密封动力学分析的数值模型。考虑了转子跳动、不对中、端面接触以及二次密封刚度和阻尼的影响。采用全局时间积分方案，跟踪动态密封行为的时间历程，获得密封轴向和角向运动以及扭矩、功率损失和流量等关键参数。将气膜润滑、端面接触和密封动力学分析转化为一个逆问题，并在每个时间步迭代求解。介绍了具有代表性的螺旋槽气体密封在瞬态工况下的动态跟踪运动和关键密封特性。
A numerical model is developed for the dynamic analysis of gas lubricated spiral groove face seals. Effects of the rotor runout, misalignment, face contact, as well as the stiffness and damping of the secondary seal are considered. Seal axial and angular motions and key parameters such as toreque, power loss, and flow rate are obtained by a global time integration scheme, which traces the time history of the dynamic sealing behaviors. The analysis of gas film lubrication, face contact, and the seal dynamics is cast as an inverse problem and the solution is obtained iteratively at each time step. Dynamic tracking motion and key sealing characteristics of a representative spiral groove gas seal undergoing transient operations are presented.