ラビリンスシールによるロータの不安定振動 : 系の減衰係数に及ぼす入口部旋回流の影響

概要

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An experimental study to examine the destabilizing forces developed by the labyrinth seal is presented. In the present tests, the pressure distribution in the seal and the transient responses of the rotor due to step excitations are measured under various conditions of the pressure, the swirl velocity at the seal entrance and the seal eccentricity. Significant forward whirl excitation forces are developed by the swirl when the seal surfaces are not co-axial. The system damping increases slightly with the sealing pressure. But the damping decreases linearly with increasing the swirl velocity.
一般社団法人日本機械学会の論文
1988-06-25