Bulk flow model with perturbation simplification has been used to calculate rotordynamic
coefficients in annular seals which have significant influences on the dynamic behavior of …

This paper presents a computational fluid dynamic (CFD) investigation quantifying the
effects of labyrinth seal geometry and operating conditions on the rotor and stator …

Traditional studies for seal evaluation primarily focused on rotordynamic coefficients. We
previously introduced two innovative labyrinth seals, the diaphragm labyrinth seal (DLS) and …

This paper represents the results of calculation of rotordynamics and leakage rate
characteristics of scallop seals with sickle grooves (SSSG) depending on seal geometry …

In straight-through centrifugal pumps, a grooved seal acts as a balance piston to equilibrate
the full pressure rise across the pump. As the groove pattern breaks the development of fluid …

Traditional annular seal models are based on bulk flow theory. While these methods are
computationally efficient and can predict dynamic properties fairly well for short seals, they …

Abstract Teeth-on-rotor (TOR) and teeth-on-stator (TOS) layouts are compared in this paper
to explore better arrangement for different labyrinth seals. The diaphragm labyrinth seal …

The three-dimensional (3D) transient computational fluid dynamic (CFD) method was
proposed to predict rotordynamic coefficients for annular gas seals. This transient CFD …

In noncontact annular labyrinth seals used in turbomachinery, fluid prerotation in the
direction of shaft rotation effectively increases fluid velocity in the circumferential direction …

In this article, a generic framework, which takes into account of both the centrifugal and
thermal effects, is introduced towards rotordynamic characterization of rotating labyrinth gas …