Experimental and numerical study on the performance of the smooth-land labyrinth seal

22nd Fluid Mechanics Conference

物理学;力学

Szymanski, A.^1 ; Dykas, S.^1 ; Wróblewski, W.^1 ; Majkut, M.^1 ; Strozik, M.^1

Silesian University of Technology, Institute of Power Engineering and Turbomachinery, ul. Konarskiego 18, Gliwice

44-100, Poland^1

关键词: Experimental and numerical studies;    Flow Phenomena;    High-temperature capability;    Labyrinth Seal;    Leakage performance;    Rotor and stators;    Sealing structures;    Secondary air distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/760/1/012033/pdf
DOI  :  10.1088/1742-6596/760/1/012033

学科分类：力学，机械学

来源: IOP

【 摘 要 】

In turbomachinery the secondary flow system includes flow phenomena occurring outside the main channel, where the gaseous medium performs work on blades. Secondary air distribution constitutes a very complex and closely interrelated system that affects most of the gas turbine components. One of the most important examples of the secondary flow is leakage occurring in seals, e.g. at the rotor and stator tips, on the shaft or on the sides of the blade rim. Owing to its simplicity, low price, easy maintenance and high temperature capability, the labyrinth seal is a prime sealing solution that may be selected from numerous types of sealing structures applied in turbomachinery. For this reason, an experimental study of this particular structure has been carried out. The paper presents leakage performance of the smooth-land labyrinth seal.