Zobrazeno 1 - 10
of 240
pro vyhledávání: '"Luis San Andrés"'
Autor:
Luis San Andrés
Publikováno v:
Lubricants, Vol 11, Iss 1, p 26 (2023)
Aerodynamic forces due to blade-tip clearance eccentricity are a known destabilizing source in rotating machinery with unshrouded impellers. Dynamic forces also appear in shrouded impellers, due to changes in the pressure in the gap between the impel
Externí odkaz:
https://doaj.org/article/502c50c606724a78a027e21e4f921325
Publikováno v:
Applied Sciences, Vol 11, Iss 17, p 7949 (2021)
Having come of age, gas film bearings enable high-speed oil-free (micro) rotating machinery with gains in efficiency and reliability, longer maintenance intervals, and a reduction in contaminants released to the atmosphere. Among gas bearing types, p
Externí odkaz:
https://doaj.org/article/10b13742bed54eda8bf3bbd5b2b96a57
Autor:
Luis San Andrés, Andy Alcantar
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 145
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. The paper presents measurements of the static and dynamic load perfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::516411c84428595fe582b815e7ba0320
https://doi.org/10.1115/1.4056535
https://doi.org/10.1115/1.4056535
Autor:
Bonjin Koo, Luis San Andrés
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 145
Rotor-bearing systems often rely on squeeze film dampers (SFDs) to increase the dynamic stability and reduce rotor motion amplitudes while traversing critical speeds. In aircraft engines, to increase the damping capacity within a limited physical spa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e043268a571a102148c5b9d64670c53
https://doi.org/10.1115/1.4055712
https://doi.org/10.1115/1.4055712
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 145
This paper reports and compares the experimental results of leakage and dynamic force coefficients for two liquid annular pressure seals, one having a smooth-rotor/circumferentially-grooved stator (SR/GS), the other one with a circumferentially-groov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::940997a9bbb73362e01fce62f5a3fcd2
https://doi.org/10.1115/1.4055638
https://doi.org/10.1115/1.4055638
Publikováno v:
Tribology Transactions. 64:981-995
Microturbomachinery implements gas bearings to produce significant power with high efficiency at high rotor speed operation. Externally pressurized porous (EPP) gas bearings allow nearly friction-f...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b5578a1db046f4ecda98a5184246873
https://doi.org/10.1080/10402004.2021.1875091
https://doi.org/10.1080/10402004.2021.1875091
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 145
Modern turbomachinery favors pocket damper seals (PDS) which produce more effective damping than labyrinth seals (LS). Liquid tolerant compressors enable deep sea oil and gas (O&G) facilities; and seals supplied with a two-phase flow can have an impa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fcca2dcf859dd98affb6074e42032bc
https://doi.org/10.1115/1.4055665
https://doi.org/10.1115/1.4055665
Publikováno v:
Journal of Engineering for Gas Turbines and Power.
Automotive turbochargers (TCs) use an engine oil lubricated bearing system to produce acceptable performance (as per the engine volumetric efficiency) and proven reliability. However, the bearings also cause TC rotordynamic responses that are rich in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b12d6005783448e1256361d2f2c96d97
https://doi.org/10.1115/1.4055365
https://doi.org/10.1115/1.4055365
Publikováno v:
Journal of Tribology. 144
Pumping efficiency and rotordynamic stability are paramount to subsea multiphase pump operation since, during the life of a well, the process fluid transitions from a pure liquid to a mixture of gas in the liquid to just gas. Circumferentially groove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1de9d4adbaa49d523376d25505820f22
https://doi.org/10.1115/1.4054757
https://doi.org/10.1115/1.4054757
Publikováno v:
Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction.
Labyrinth seals (LSs), honeycomb seals (HCSs) and hole-pattern seals, pocket damper seals (PDSs), and fully-partitioned damper seals (FPDSs) serve as balance pistons on the discharge side of barrel-type centrifugal compressors. These seals, facing la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58802acff82eb03a03d5865993c53b63
https://doi.org/10.1115/gt2022-83164
https://doi.org/10.1115/gt2022-83164