Non-contacting finger seal dynamic model

A. V Selivanov; I. J Dzeva

doi:10.17816/2074-0530-67113

Izvestiya MGTU MAMI ›› 2015, Vol. 9 ›› Issue (3-4) : 55 -65. DOI: 10.17816/2074-0530-67113

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Non-contacting finger seal dynamic model

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Abstract

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.

Keywords

non-contacting finger seal / Reynolds equation / aeroelasticity analysis / dynamic response

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A. V Selivanov, I. J Dzeva. Non-contacting finger seal dynamic model. Izvestiya MGTU MAMI, 2015, 9(3-4): 55-65 DOI:10.17816/2074-0530-67113

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