2007•Gas Turbine Experiment and ResearchRequires access

Influence of High Rotational Speeds on the Labyrinth Sealing Characteristics

Bo Liu

Abstract

Labyrinth seal was experimentally investigated to determine the effects of rotational speed and pressure ratio on the leakage through the seal.The effects of rotational speed on the flow parameter using dynamic clearance and static clearance were analyzed in detail respectively.The investigation encompasses a wide range of pressure ratio and rotational speed.The main reasons for flow parameter changes with rotational speed and pressure ratio were analyzed.A number of valuable conclusions have been drawn on the basis of analyses.

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Key concepts: Rotational speed, Labyrinth seal, Mechanics, Overall pressure ratio, Seal (emblem), Materials science, Gear ratio, Static pressure