关键词: 压气机部件;叶尖间隙;热应力;热膨胀分析

Abstract: Transient clearances at blade tips are discussed, which transient rotational speeds, thermal parameters,physical parameters, geometrical parameters,etc. Among of these, the main effects are thermal expansion and centrifugal extension.With a series of calculations, a variation map of the clearance along with time has been drawn.

Key words: Compressor part;Blade tip clearance;Thermal stress;Thermal expansion analysis