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L San Andrés, S Seshagiri - … of Engineering for …, 2013 - asmedigitalcollection.asme.org
Aircraft engine rotors, invariably supported on rolling element bearings with little dam**,
are particularly sensitive to rotor imbalance and sudden maneuver loads. Most engines …

A model for improved prediction of force coefficients in grooved squeeze film dampers and oil seal rings

A Delgado, L San Andrés - 2010 - asmedigitalcollection.asme.org
Squeeze film damper (SFD) designs typically implement supply grooves to ensure adequate
lubricant flow into the film lands. Oil seal rings, of land film clearance c, also incorporate …

A novel bulk-flow model for improved predictions of force coefficients in grooved oil seals operating eccentrically

LS Andrés, A Delgado - 2012 - asmedigitalcollection.asme.org
Oil seals in centrifugal compressors reduce leakage of the process gas into the support
bearings and ambient. Under certain operating conditions of speed and pressure, oil seals …

Characterization of long-term evolution of leakage rates of O-ring seals in nuclear power plant under high-temperature and high-pressure conditions

M Li, L He, D Zheng, X Fang, X Huang, G Xu - Nuclear Engineering and …, 2024 - Elsevier
Under accident conditions, the sustained high temperature and high pressure (HTHP)
environment within the containment structure poses a threat to the penetration seals. This …

Long-term sealing performance evaluation and service life prediction of O-rings under thermal–mechanical coupling conditions

M Li, T Zhang, X Fang, D Zhou, G Xu… - … and Simulation in …, 2024 - iopscience.iop.org
In service, thermal–mechanical coupling conditions can exacerbate stress relaxation of O-
rings and lead to their thermal expansion, further complicating the sealing problem. A finite …

Effect of a Reduced Oil Flow Rate on the Static and Dynamic Performance of a Tilting Pad Journal Bearing Running in Both the Flooded and Evacuated Conditions

L San Andrés, A Alcantar - … of Engineering for …, 2023 - asmedigitalcollection.asme.org
The mechanical efficiency of rotating machinery improves as drag power losses in bearings
reduce; hence, an operation mode that reduces the supplied flow brings immediate benefits …

Experimental Study of the Static and Dynamic Characteristics of a Long (L/D= 0.65) Smooth Annular Seal Operating Under Two-Phase (Liquid/Gas) Conditions

M Zhang - 2017 - oaktrust.library.tamu.edu
This research documents the development of a 2-phase annular-seal stand (2PASS) in the
Turbomachinery Laboratory at Texas A&M University to investigate the static and dynamic …

Design and Calibration of a Full Scale Active Magnetic Bearing Based Test Facility for Investigating Rotordynamic Properties of Turbomachinery Seals in Multiphase …

AJ Voigt, C Mandrup-Poulsen… - … for Gas Turbines …, 2017 - asmedigitalcollection.asme.org
The recent move toward subsea oil and gas production brings about a requirement to locate
process equipment in deepwater installations. Furthermore, there is a drive toward omitting …

Influence of groove size on the static and rotordynamic characteristics of short, laminar-flow annular seals

DW Childs, M Graviss, LE Rodriguez - 2007 - asmedigitalcollection.asme.org
Test results are presented for a smooth seal and three centrally grooved seals that are
representative of buffered-flow oil seals in centrifugal compressors. The seals are short (L∕ …