Download LABYRINTH SEAL PREPROCESSOR AND POST

NOMENCLATURE
Symbol
Description
Units
API
American Petroleum Institute
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Cxx
Direct-coupled damping
FּT/L
Cxy
Cross-coupled damping
FּT/L
Kxx
Direct-coupled stiffness
F/L
Kxy
Direct-coupled stiffness
F/L
Laby
Labyrinth Seal
N
Rotor Speed
Rev/T
Ncr
1st critical speed
Rev/T
Pinlet
Gas pressure at seal inlet
F/A
Pr
Pressure ratio.
Dim
Qe
Effective cross-coupling stiffness
F/L
Qebp
Effective cross-coupling stiffness for balance piston.
F/L
r
Shaft radius
L
sr
Gas swirl ratio at seal inlet
Dim
Vabs
Gas absolute velocity
L/T
ω
Frequency
Rad/T
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