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Keywords: Rotordynamics
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Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A013, June 13–17, 2022
Paper No: GT2022-82784
... influencing factor affecting the nonlinear response characteristics of the flexural mode, and an adequate preload will minimize or prevent the effects of stiffness nonlinearity during operation. rotordynamics nonlinear vibration rabbet joint stiffness loss Proceedings of ASME Turbo Expo 2022...
Proceedings Papers

Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T18A002, June 13–17, 2022
Paper No: GT2022-79194
... on an ICT turbogenerator should enable it to reach a TIT of 1275 °C, a target to achieve 45 % cycle efficiency in the sub-MW range. ceramics inside-out rotordynamics experimental validation high temperature Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition...
Proceedings Papers

Proc. ASME. GT2022, 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, V08AT22A007, June 13–17, 2022
Paper No: GT2022-81990
... and operation; namely, to quantify the amount of air ingested and its effect on the damper forced performance. dampers rotordynamics force coefficients Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022...
Proceedings Papers

Proc. ASME. GT2022, 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, V08AT22A020, June 13–17, 2022
Paper No: GT2022-83164
... annular seal rotordynamics force coefficients leakage Abstract Labyrinth seals (LS), honeycomb seals (HCS) and hole-pattern seals, pocket damper seals (PDS) and fully-partitioned damper seals (FPDS) serve as balance pistons on the discharge side of barrel type centrifugal compressors...
Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A001, June 13–17, 2022
Paper No: GT2022-79563
..., grant agreement #764690) with the aim to design and test a 5MW prototype which has been finally tested at full density and full load in a dedicated test loop at the Authors’ premises. Main subject of this paper is the prototype rotordynamic design with a special focus on the balance piston seal design...
Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A015, June 13–17, 2022
Paper No: GT2022-83237
... Abstract The current work shows the implementation of a high-speed turbomachinery test rig to measure vibration and internal shaft temperature differentials at a journal bearing for a rotor system designed to induce the Morton effect rotordynamic phenomenon. The vibration and shaft temperature...
Proceedings Papers

Proc. ASME. GT2022, Volume 4: Cycle Innovations; Cycle Innovations: Energy Storage, V004T06A015, June 13–17, 2022
Paper No: GT2022-81710
... stiffness model is applied to air bladeless turbines (or Tesla turbines) high speed rotors, in order to assess their global rotordynamic behavior when they are mounted on hybrid ball bearings. In order to properly investigate all the issues related to critical speeds identification, an adequate number...
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 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. 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. 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...