Numerical Study of Leakage and Rotordynamic Performance of Staggered Labyrinth Seals Working with Supercritical Carbon Dioxide

Table 1

Seal dimensions.

Parameter	Value
Seal inner radius R (mm)	328.5
Cavity depth h (mm)	8.5
Low blade height h1 (mm)	5.5
High blade height h2 (mm)	8
Low blade root length d1 (mm)	2.6
High blade root length d2 (mm)	3.4
Blade thickness d (mm)	0.13
Low blade 1 and low blade 2 distance l1 (mm)	1.4
Low blade 2 and high blade distance l2 (mm)	3.5
High blade and low blade 1 distance l3 (mm)	2.5
Low blade and rotor clearance δ1 (mm)	3
High blade and rotor clearance (low blade and convex plate clearance) δ2 (mm)	0.5
Convex plate height a (mm)	2.5
Convex plate width b (mm)	4