Inlet preswirl dependence research on three different labyrinth seals

X Zhang, Y Jiao, X Qu, Z Zhao, G Huo, K Huang - Tribology International, 2022 - Elsevier
In this paper, an angular velocity is proposed to calculate the air inlet preswirl condition. The
potential influences on rotordynamic and leakage performance of inlet preswirl ratios …

[HTML][HTML] Experimental and CFD analysis of static and dynamic rotor stabilities in three-annular seals

A Zahorulko, O Pozovnyi, G Peczkis - Tribology International, 2023 - Elsevier
At the sealing pressures of 1.25, 2.5, 5, 7.5 or 10 bar and at a rotation speed of zero to 8000
rpm, using experiment and CFD simulation, the static and dynamic stabilities of two three …

[HTML][HTML] A transient bulk flow model with circular whirl motion for rotordynamic coefficients of annular seals

XIA Peng, LIU Zhansheng, YU Xiangyu… - Chinese Journal of …, 2018 - Elsevier
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 …

Computational analysis for scallop seals with sickle grooves, part II: Rotordynamic characteristics

AV Zahorulko, YB Lee - Mechanical Systems and Signal Processing, 2021 - Elsevier
This paper represents the results of calculation of rotordynamics and leakage rate
characteristics of scallop seals with sickle grooves (SSSG) depending on seal geometry …

The effects of fluid preswirl and swirl brakes design on the performance of labyrinth seals

A Untaroiu, H Jin, G Fu… - … of Engineering for …, 2018 - asmedigitalcollection.asme.org
In noncontact annular labyrinth seals used in turbomachinery, fluid prerotation in the
direction of shaft rotation effectively increases fluid velocity in the circumferential direction …

An optimum design approach for textured thrust bearing with elliptical-shape dimples using computational fluid dynamics and design of experiments including …

G Fu, A Untaroiu - Journal of Engineering for Gas …, 2017 - asmedigitalcollection.asme.org
Textured thrust bearings are capable of providing higher load capacity and lower friction
torque compared to nontextured bearings. However, most previous optimization efforts for …

A numerical study on the influence of hole depth on the static and dynamic performance of hole-pattern seals

PJ Migliorini, A Untaroiu… - Journal of …, 2015 - asmedigitalcollection.asme.org
Annular seals serve an important role in the dynamics of turbomachinery by reducing
leakage of a process fluid while also contributing potentially destabilizing forces to the rotor …

Hole-pattern seals performance evaluation using computational fluid dynamics and design of experiment techniques

A Untaroiu, C Liu, PJ Migliorini… - … for Gas Turbines …, 2014 - asmedigitalcollection.asme.org
A main goal of noncontacting mechanical seals is to provide minimal leakage during
operation. This may be achieved by specifying a small clearance between the mating faces …

Study on the effect of thermal deformation on the liquid seal of high-temperature molten salt pump in molten salt reactor

XC Shen, Y Fu, JY Zhang - Nuclear Science and Techniques, 2023 - Springer
The high-temperature molten salt pump is the core equipment in a molten salt reactor that
drives the flow of the molten salt coolant. Rotor stability is key to the continuous and reliable …

Circumferentially grooved seal flow field analysis based on effective film thickness to improve bulk flow models

N Gibbons, C Watson-Kassa… - … of Engineering for …, 2022 - asmedigitalcollection.asme.org
Bulk flow methods for circumferentially grooved seals use simplified physics models to
predict leakage and rotordynamic coefficients efficiently, but uncertainty in empirical …