Open AccessNon-contacting finger seal dynamic model
Author(s) -
Alexey Selivanov,
Ivan J. Dzeva
Publication year - 2015
Publication title -
izvestiâ mgtu "mami"
Language(s) - English
Resource type - Journals
eISSN - 2949-1428
pISSN - 2074-0530
DOI - 10.17816/2074-0530-67113
Subject(s) - seal (emblem) , rotor (electric) , labyrinth seal , aeroelasticity , mechanics , rotation (mathematics) , mechanical engineering , dynamics (music) , structural engineering , computer science , control theory (sociology) , materials science , engineering , physics , acoustics , aerodynamics , stiffness , art , control (management) , artificial intelligence , visual arts
Dynamic response of the finger seal compliant elements to rotor motion is investigated. It is shown that radial adjustment of the fingers with respect to rotor surface displacements requires convergent (in rotor rotation direction) operating clearance under the pads. Due to arising gasdynamic lifting force appropriate seal gasdynamic balancing and non-contacting operating mode can be achieved. The results are numerically obtained on the basis of the aeroelastic dynamics analysis.