Labyrinth seal vibrates as nodal diameter along the circumference, the reducing of aerodynamics damping in some mode makes the stability of the system reduced, even makes the system unstable.
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- 该装置沿周向作节径型振动,在某些模态时,密封气体的气动阻尼可能为负值,使整个系统稳定性下降,甚至出现不稳定状态。