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Proceedings Papers

Test Results for the Static and Rotordynamic Characteristics of a Long (L/D = 0.75) Smooth Seal in Two-Phase (Mainly Gas) Conditions With a 62-Bar Inlet Pressure

Dung L. Tran, Dara W. Childs, Hari Shrestha, Min Zhang
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A001, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14118
https://doi.org/10.1115/GT2020-14118
View Paper titled, Test Results for the Static and Rotordynamic Characteristics of a Long (L/D = 0.75) Smooth Seal in Two-Phase (Mainly Gas) Conditions With a 62-Bar Inlet Pressure
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Topics: Pressure, Stiffness, Damping, Flow (Dynamics), Gas turbines, Geometry, Leakage, Multiphase flow, Pistons, Pumps
Proceedings Papers

On the Leakage and Dynamic Force Coefficients of a Novel Stepped Shaft Pocket Damper Seal: Experimental and Numerical Verification

Jing Yang, Luis San Andrés, Xueliang Lu
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A002, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14153
https://doi.org/10.1115/GT2020-14153
View Paper titled, On the Leakage and Dynamic Force Coefficients of a Novel Stepped Shaft Pocket Damper Seal: Experimental and Numerical Verification
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Topics: Dampers, Leakage, Damping, Clearances (Engineering), Computational fluid dynamics, Rotors, Blades, Flow (Dynamics), Turbomachinery, Design
Proceedings Papers

Effect of Partial Admission and Swirl Brakes on Destabilization Force of Labyrinth Gas Seal

Makoto Iwasaki, Rimpei Kawashita, Naoto Omura, Kazuyuki Matsumoto, Kenichi Murata, Ryokichi Hombo
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A003, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14155
https://doi.org/10.1115/GT2020-14155
View Paper titled, Effect of Partial Admission and Swirl Brakes on Destabilization Force of Labyrinth Gas Seal
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Topics: Brakes
Proceedings Papers

Gas Labyrinth Seals: Improved Prediction of Leakage in Gas Labyrinth Seals Using an Updated Kinetic Energy Carry-Over Coefficient

Tingcheng Wu, Luis San Andrés
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A004, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14167
https://doi.org/10.1115/GT2020-14167
View Paper titled, Gas Labyrinth Seals: Improved Prediction of Leakage in Gas Labyrinth Seals Using an Updated Kinetic Energy Carry-Over Coefficient
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Topics: Kinetic energy, Leakage, Flow (Dynamics), Clearances (Engineering), Computational fluid dynamics, Pressure, Cavities, Geometry, Rotors, Stators
Proceedings Papers

Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO 2 Turbomachinery: Experimental Evaluation and Fluid-Structure Model Predictions

Bugra Ertas, Keith Gary, Adolfo Delgado
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A018, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14964
https://doi.org/10.1115/GT2020-14964
View Paper titled, Additively Manufactured Compliant Hybrid Gas Thrust Bearing for sCO 2 Turbomachinery: Experimental Evaluation and Fluid-Structure Model Predictions
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Topics: Additive manufacturing, Fluids, Thrust bearings, Turbomachinery, Stress, Bearings, Pressure, Hydrostatics, Thrust, Deflection
Proceedings Papers

The Thermo-Hydrodynamic Analysis of the Plain Journal Bearing With Centered Circumferential Groove: Numerical Simulation vs. Experiment

Guanghui Zhang, Shubo Yu, Zhansheng Liu, Kefan Xu, Yu Li
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A011, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14364
https://doi.org/10.1115/GT2020-14364
View Paper titled, The Thermo-Hydrodynamic Analysis of the Plain Journal Bearing With Centered Circumferential Groove: Numerical Simulation vs. Experiment
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Topics: Computer simulation, Journal bearings, Thermohydrodynamics, Bearings, Temperature, Clearances (Engineering), Temperature distribution, Design, Flow (Dynamics), Sensors
Proceedings Papers

On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions

Luis San Andrés, Xueliang Lu, Bonjin Koo, Scott Tran
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A005, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14182
https://doi.org/10.1115/GT2020-14182
View Paper titled, On the Effect of the Gap of End Seals on Force Coefficients of a Test Integral Squeeze Film Damper: Experiments and Predictions
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Topics: Dampers, Damping, Bearings, Lubricants, Rotors, Stiffness, Clearances (Engineering), Flow (Dynamics), Stress, Compressibility
Proceedings Papers

Experimental Investigation on the Rubbing Process of Labyrinth Seals Against Honeycomb Liners

Oliver Munz, Lisa Hühn, Corina Schwitzke, Hans-Jörg Bauer, Tim Fischer, Sonun Ulan kyzy
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A032, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15935
https://doi.org/10.1115/GT2020-15935
View Paper titled, Experimental Investigation on the Rubbing Process of Labyrinth Seals Against Honeycomb Liners
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Topics: Honeycomb structures, Wear, Flow (Dynamics), Leakage, Optimization, Rotors, Sealing (Process), Service life (Equipment), Stators, Stress
Proceedings Papers

Experimental Investigations on the Pressure Fluctuations in the Sealing Gap of Dry Gas Seals With Embedded Pressure Sensors

Jingjing Luo, Dieter Brillert
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A012, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14464
https://doi.org/10.1115/GT2020-14464
View Paper titled, Experimental Investigations on the Pressure Fluctuations in the Sealing Gap of Dry Gas Seals With Embedded Pressure Sensors
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Topics: Fluctuations (Physics), Pressure, Pressure sensors, Sealing (Process), Test facilities, Computer simulation, Pressure measurement, Compressors, Flow (Dynamics), Gas flow
Proceedings Papers

Numerical Investigation of Rotor and Journal Bearing Parameters on Nonlinear Vibration of a Highly Flexible Rotor Considering Journal Angular Motion With Experimental Verification

Nuntaphong Koondilogpiboon, Tsuyoshi Inoue
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A006, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14254
https://doi.org/10.1115/GT2020-14254
View Paper titled, Numerical Investigation of Rotor and Journal Bearing Parameters on Nonlinear Vibration of a Highly Flexible Rotor Considering Journal Angular Motion With Experimental Verification
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Topics: Journal bearings, Nonlinear vibration, Rotors, Bearings, Bifurcation, Disks, Limit cycles, Degrees of freedom, Finite element analysis, Rolling bearings
Proceedings Papers

A Computational Model for the Analysis of the Static Forced Performance of Self-Equalizing Tilting Pad Thrust Bearings

Rasool Koosha, Luis San Andrés
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A033, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16060
https://doi.org/10.1115/GT2020-16060
View Paper titled, A Computational Model for the Analysis of the Static Forced Performance of Self-Equalizing Tilting Pad Thrust Bearings
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Topics: Computer simulation, Thrust bearings
Proceedings Papers

Novel Approach for Optical Characterization of Thrust Collar Lubricated Area: Experimental and Numerical Results

Thomas Kerr, Adolfo Delgado
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A025, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15467
https://doi.org/10.1115/GT2020-15467
View Paper titled, Novel Approach for Optical Characterization of Thrust Collar Lubricated Area: Experimental and Numerical Results
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Topics: Thrust, Cavitation, Stress, Turbulence, Computational fluid dynamics, Modeling, Pressure, Algorithms, Bearings, Compressors
Proceedings Papers

Identification of Dynamic Coefficients of a Five-Pad Tilting Pad Journal Bearing up to Highest Surface Speeds

Philipp Zemella, Thomas Hagemann, Bastian Pfau, Hubert Schwarze
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A019, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14991
https://doi.org/10.1115/GT2020-14991
View Paper titled, Identification of Dynamic Coefficients of a Five-Pad Tilting Pad Journal Bearing up to Highest Surface Speeds
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Topics: Journal bearings, Bearings, Stress, Damping, Excitation, Flow (Dynamics), Stiffness, Rotors, Algorithms, Deflection
Proceedings Papers

Dynamic Identification of 280mm Diameter Tilting Pad Journal Bearings: Test Results and Measurement Uncertainties Assessment of Different Designs

Riccardo Ferraro, Alice Innocenti, Mirko Libraschi, Michele Barsanti, Enrico Ciulli, Paola Forte, Matteo Nuti
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A013, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14718
https://doi.org/10.1115/GT2020-14718
View Paper titled, Dynamic Identification of 280mm Diameter Tilting Pad Journal Bearings: Test Results and Measurement Uncertainties Assessment of Different Designs
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Topics: Journal bearings, Measurement uncertainty
Proceedings Papers

Effects of Clearance on the Performance of a Labyrinth Seal Under Wet-Gas Conditions

Min Zhang, Dara W. Childs, Dung L. Tran, Hari Shrestha
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A007, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14267
https://doi.org/10.1115/GT2020-14267
View Paper titled, Effects of Clearance on the Performance of a Labyrinth Seal Under Wet-Gas Conditions
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Topics: Clearances (Engineering), Leakage
Proceedings Papers

Load Influence on Hydrostatic Oil Film Journal Bearing Stiffness Characteristics

Leonid Moroz, Leonid Romanenko, Roman Kochurov, Evgen Kashtanov
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A020, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15008
https://doi.org/10.1115/GT2020-15008
View Paper titled, Load Influence on Hydrostatic Oil Film Journal Bearing Stiffness Characteristics
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Topics: Bearings, Damping, Hydrostatics, Journal bearings, Stiffness, Stress
Proceedings Papers

Experimental Study on the Performance of a See-Through Labyrinth Seal With Two-Phase, Mainly-Liquid Mixtures

Min Zhang, Dara W. Childs
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A008, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14268
https://doi.org/10.1115/GT2020-14268
View Paper titled, Experimental Study on the Performance of a See-Through Labyrinth Seal With Two-Phase, Mainly-Liquid Mixtures
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Topics: Centrifugal pumps, Clearances (Engineering), Damping, Flow (Dynamics), Fluids, Friction, Gas industry, Leakage, Pistons, Pressure
Proceedings Papers

Rolling Bearing Parametric Excitation of a Jeffcott Rotor System

Ghasem Ghannad Tehrani, Chiara Gastaldi, Teresa Maria Berruti
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A034, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16148
https://doi.org/10.1115/GT2020-16148
View Paper titled, Rolling Bearing Parametric Excitation of a Jeffcott Rotor System
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Topics: Excitation, Rolling bearings, Rotors
Proceedings Papers

Matching Design of Active Magnetic Bearing and Elastic Support Vibration Isolator

Yichen Yao, Yixin Su, Tianye Yu, Gexue Ren, Suyuan Yu
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A014, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14827
https://doi.org/10.1115/GT2020-14827
View Paper titled, Matching Design of Active Magnetic Bearing and Elastic Support Vibration Isolator
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Topics: Design, Machinery, Magnetic bearings, Vibration isolators
Proceedings Papers

Squeeze Film Damper Bearing With Double-Ended Beam Springs: Part II — Experimental Validation

Wei Li, Christopher Braman, Brian Hantz, Manish Thorat, Brian Pettinato
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A026, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15491
https://doi.org/10.1115/GT2020-15491
View Paper titled, Squeeze Film Damper Bearing With Double-Ended Beam Springs: Part II — Experimental Validation
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Topics: Bearings, Dampers, Fatigue testing, Modal analysis, Rotors, Springs