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Keywords: rotordynamics
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Proceedings Papers

Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT28A004, June 7–11, 2021
Paper No: GT2021-59725
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59725 SYSTEM LEVEL ANALYSIS OF COMPRESSOR EYE-LABYRINTH SEAL ROTORDYNAMIC FORCES: A COMPUTATIONAL FLUID DYNAMICS APPROACH Md Shujan Ali1, Farzam Mortazavi2, Alan...
Proceedings Papers

Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT28A001, June 7–11, 2021
Paper No: GT2021-58800
..., the achievement of these targets pushes the rotordynamic design towards its limit in terms of API requirements. Tiling pad journal bearings (TPJBs) are commonly adopted in high-speed applications for their inherent stability characteristics that permit to ensure the rotordynamic stability and eliminate self...
Proceedings Papers

Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT28A009, June 7–11, 2021
Paper No: GT2021-60301
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-60301 EFFECTIVE EVALUATION OF ROTORDYNAMIC PERFORMANCE WITHIN ROTOR- BEARING SYSTEM DESIGN BOUNDS Zhusan Luo Carl L. Schwarz Linde Inc. Tonawanda, NY 14150, USA...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A021, September 21–25, 2020
Paper No: GT2020-16043
..., followed by a quick deceleration with large forces. A simple kinetics model of the test rig drop produces peak decelerations similar in magnitude to those measured. KEYWORDS Gas bearings, rotordynamics, shock test. INTRODUCTION Operating at high rotor speeds and under extreme temperature conditions...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A003, September 21–25, 2020
Paper No: GT2020-14155
... analysis method applying frozen rotor interface at SB region was proposed. Keywords: Rotordynamics, labyrinth seal, Partial admission, Swirl brakes ABBREVIATION AND NOMENCLATURE FA/PA Full admission, Partial admission SB Swirl Brakes wSB/ woSB With SB / Without SB ST : Steam Turbine Seal clearance Swirl...
Topics: Brakes
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A035, September 21–25, 2020
Paper No: GT2020-16215
...Abstract Abstract Rotating machinery relies on engineered tilting-pad journal bearings (TPJB) to provide static load support with minimal drag power losses, safe pad temperatures, and ensuring a rotordynamic stable rotor operation. End users focus on reducing the supplied oil flow rate...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A015, September 21–25, 2020
Paper No: GT2020-15136
... of these and presents what could be defined as “predicting the effect of balancing” at rotational speeds that are higher than those possible on balancing machines. Rotordynamics modeling, identification techniques developed by the authors and the available vibration measurements allow the simulation of the behavior...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A001, September 21–25, 2020
Paper No: GT2020-14136
...Abstract Abstract Squeeze film dampers (SFDs) are used in highspeed rotordynamics systems to mitigate vibrations while traversing critical speeds. SFDs are critical in dissipating large amplitude motions and dynamic loading transferred from the rotor to the bearing supports during highspeed...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A009, September 21–25, 2020
Paper No: GT2020-14841
...Abstract Abstract The American Petroleum Institute (API) level 2 rotordynamic stability analysis requires determination of possible destabilization forces on a compressor or pump impeller. Dynamic forces in transient regimes are often excluded although a turbomachine impeller may experience...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A016, September 21–25, 2020
Paper No: GT2020-15212
...Abstract Abstract This paper presents rotordynamic data obtained within a test facility studying the aerodynamics of a high-speed centrifugal compressor for aero-engine applications. The experimental overhung compressor is supported by two rolling element bearings. The compressor-end ball...
Proceedings Papers

Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT29A024, June 3–7, 2013
Paper No: GT2013-95779
... This paper focuses on extending an earlier investigation on the systematic and rational consideration of uncertainty in reduced order models of rotordynamics systems. The current effort concentrates on the consistent introduction of uncertainty in mass properties on the modal mass and gyroscopic...
Proceedings Papers

Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT29A025, June 3–7, 2013
Paper No: GT2013-95800
... thrust foil bearing is located inside the gas generator turbine. The rotor configuration results in eight degree of freedom (DOF) rotordynamic motions, which are two cylindrical modes and two conical modes from the two rotors. Stiffness of bump foils of candidate AFB was estimated from measured...
Proceedings Papers

Proc. ASME. GT2012, Volume 5: Manufacturing Materials and Metallurgy; Marine; Microturbines and Small Turbomachinery; Supercritical CO2 Power Cycles, 703-712, June 11–15, 2012
Paper No: GT2012-69017
...: Rotordynamics, micro-turbomachinery, oil- free, foil bearing, centrifugal compressor, expander / expansion turbine / turbo-expander, hole-pattern seal, labyrinth seal, stability analysis, seal taper sensitivity analysis 1 INTRODUCTION 1.1 Background The hydrocarbon recovery in some oil fields is limited due...
Proceedings Papers

Proc. ASME. GT2012, Volume 5: Manufacturing Materials and Metallurgy; Marine; Microturbines and Small Turbomachinery; Supercritical CO2 Power Cycles, 753-766, June 11–15, 2012
Paper No: GT2012-69119
... An aerodynamic and rotordynamic performance test stand has been developed to test a 105,000 rpm compressor-expander which is intended for subsurface natural gas reinjection. The machine consists of a two-stage centrifugal compressor which is driven by a single-stage expansion turbine...
Proceedings Papers

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 113-122, June 14–18, 2010
Paper No: GT2010-22435
... of the maneu- ver/acceleration analysis. Keywords: rotordynamics, maneuver, maneuver analysis, acceleration, static solution, non-linear solution INTRODUCTION Aircraft flight involves both acceleration and turn rates as a matter of course. The acceleration may be translational as in side gust or a hard landing...
Proceedings Papers

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 175-185, June 14–18, 2010
Paper No: GT2010-22667
... München Boltzmannstr. 15, 85747 Garching, Germany pugachev@es.mw.tum.de Martin Deckner eta Energieberatung GbR Löwenstr. 11, 85276 Pfaffenhofen a.d. Ilm, Germany Martin.Deckner@eta-energieberatung.de ABSTRACT This paper presents ongoing investigations on calculation and measurement of rotordynamic...
Proceedings Papers

Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 881-899, June 8–12, 2009
Paper No: GT2009-59700
... 23 02 2010 A systematic and rational approach is presented for the consideration of uncertainty in rotordynamics systems, i.e. in rotor mass and gyroscopic matrices, stiffness matrix, and bearing coefficients. The approach is based on the nonparametric stochastic modeling technique...
Proceedings Papers

Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 1055-1062, June 8–12, 2009
Paper No: GT2009-60320
... 23 02 2010 Large centrifugal compressors have at times shown to be challenging applications from a rotordynamic standpoint. Inherent rotordynamic stability and robust synchronous response to unbalance are critical for the compressor to function in the field in a reliable manner. State...
Proceedings Papers

Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 1305-1309, June 9–13, 2008
Paper No: GT2008-51484
... the applicability and limits of this new approach. rotordynamics stability impeller excitation CFD centrifugal compressor Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air GT2008 observed trends in machine behavior at low stability margins is needed. Furthermore, the development of mega...
Proceedings Papers

Proc. ASME. GT2007, Volume 5: Turbo Expo 2007, 727-736, May 14–17, 2007
Paper No: GT2007-27073
... a parametric study. Results are compared to those obtained from an analytical approach as well as from experiments. Rotordynamics Internal and External Damping Stability Criterion Stability analysis Threshold speed Shear effects shear. Proceedings of GT2007 ASME Turbo Expo 2007: Power for Land...