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Proceedings Papers

Mixed Whirl Modes in Numerical Rotordynamics Analysis

Konrad Juethner, Ted Rose, J. S. Kumar, Jianming Cao, Gregory M. Savela, Chris J. Zuck, Parag H. Mathuria

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A004, June 13–17, 2022

Paper No: GT2022-79755

DOI: https://doi.org/10.1115/GT2022-79755

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Topics: Rotordynamics, Whirls, Rotors, Design, Eigenvalues, Stability, Algorithms, Economics , Fatigue, Finite element analysis

Proceedings Papers

Semi-Analytical Model for High-Speed Rotor Whirl Prediction: An Assumed Modes Formulation for an Axisymmetric Rotor With Non-Uniform Properties

Riju Chatterjee, Ashutosh Patel, Nirmal Kumar, Pramod Kumar

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A012, June 13–17, 2022

Paper No: GT2022-82632

DOI: https://doi.org/10.1115/GT2022-82632

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Topics: Rotors, Whirls

Proceedings Papers

A Comparison of Static and Rotordynamic Characteristics for Three Types of Impeller Front Seals in a Liquid Oxygen Turbopump

Zhihong Jin, Zhigang Li, Jun Li

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, V08AT22A016, June 13–17, 2022

Paper No: GT2022-82556

DOI: https://doi.org/10.1115/GT2022-82556

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Topics: Impellers, Oxygen, Leakage, Rotors, Computational fluid dynamics, Dampers, Fluids, Stability, Stators, Stress

Proceedings Papers

Measured Leakage and Rotordynamic Force Coefficients for Two Liquid Annular Seal Configurations: Smooth-Rotor/Grooved-Stator Versus Grooved-Rotor/Smooth-Stator

Dara W. Childs, Jing Yang, Luis San Andrés, Jose M. Torres Rueda, J. Alex Moreland

Paper No: GT2022-80073

DOI: https://doi.org/10.1115/GT2022-80073

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Topics: Leakage, Rotors, Stators, Damping, Geometry, Pressure, Pumps, Stability, Brakes, Clearances (Engineering)

Proceedings Papers

Static and Rotordynamic Characteristics for Two Novel Hole-Pattern Annular Liquid Seals With Circumferentially- /Axially- Oblique Hole Cavities

Zhi Fang, Zhigang Li, Jun Li, Zhenping Feng

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A013, June 7–11, 2021

Paper No: GT2021-58996

DOI: https://doi.org/10.1115/GT2021-58996

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Topics: Cavities, Leakage, Design, Abrasion, Manufacturing, Rotors, Transients (Dynamics), Bearings, Centrifugal pumps, Clearances (Engineering)

Proceedings Papers

Rotordynamic Characteristics of the Straight-Through Labyrinth Seal Based On the Applicability Analysis of Leakage Models Using Bulk-Flow Method

Tianhao Wang, Zhigang Li, Jun Li

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT15A015, June 7–11, 2021

Paper No: GT2021-59568

DOI: https://doi.org/10.1115/GT2021-59568

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Topics: Flow (Dynamics), Leakage, Pressure, Clearances (Engineering), Sealing (Process), Damping, Excitation, Fluids, Leakage flows, Rotors

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

Paper No: GT2020-14153

DOI: https://doi.org/10.1115/GT2020-14153

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Topics: Dampers, Leakage, Damping, Clearances (Engineering), Computational fluid dynamics, Rotors, Blades, Flow (Dynamics), Turbomachinery, Design

Proceedings Papers

Rotordynamic Performance of the Interlocking Labyrinth Seal With a Tilting Rotor

Wanfu Zhang, Yingfei Wang, Qianlei Gu, Lu Yin, Jian-gang Yang

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A009, September 21–25, 2020

Paper No: GT2020-14314

DOI: https://doi.org/10.1115/GT2020-14314

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Topics: Rotors, Cavities, Stability, Flow (Dynamics), Clearances (Engineering), Damping, Deformation, Leakage flows, Numerical analysis, Pressure

Proceedings Papers

Numerical Investigation on the Static and Rotordynamic Characteristics for Two Types of Novel Mixed Helical Groove Seals

Zhi Fang, Zhigang Li, Jun Li, Zhenping Feng

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A036, September 21–25, 2020

Paper No: GT2020-16303

DOI: https://doi.org/10.1115/GT2020-16303

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Topics: Bearings, Cavities, Computational fluid dynamics, Dampers, Damping, Deformation, Drag (Fluid dynamics), Energy dissipation, Fluids, High pressure (Physics)

Proceedings Papers

A Novel Controlled-Motion Test Rig to Evaluate Effect of Synchronous and Subsynchronous Lateral Vibration on Reliability and Performance of Mechanical Seals in Pumps

Clay S. Norrbin, Adolfo Delgado

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A029, September 21–25, 2020

Paper No: GT2020-15749

DOI: https://doi.org/10.1115/GT2020-15749

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Topics: Pumps, Reliability, Vibration, Rotors, Whirls, Flow (Dynamics), Leakage, Mineral oil, Temperature, Clearances (Engineering)

Proceedings Papers

Investigation of Rotordynamic Coefficients of Gas Labyrinth Seals Using a Steady State CFD Approach

Casey Palanca, Abraham Engeda, Mike Cave

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A007, September 21–25, 2020

Paper No: GT2020-14822

DOI: https://doi.org/10.1115/GT2020-14822

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Topics: Computational fluid dynamics, Steady state, Rotors, Cavities, Clearances (Engineering), Compressors, Damping, Design, Flow (Dynamics), Gas compressors

Proceedings Papers

A Method for Rotordynamic Force Prediction of a Centrifugal Compressor Impeller Front Cavity Using a Transient Whirling CFD Technique

Kevin Hoopes, J. Jeffrey Moore, Aaron Rimpel, Chris Kulhanek, Balaji Venkataraman

Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT33A011, June 17–21, 2019

Paper No: GT2019-91904

DOI: https://doi.org/10.1115/GT2019-91904

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Topics: Cavities, Compressor impellers, Computational fluid dynamics, Transients (Dynamics), Whirls, Impellers, Modeling, Simulation, Stability

Proceedings Papers

Numerical Modeling of Static and Rotordynamic Characteristics for Three Types of Helically-Grooved Liquid Annular Seals

Zhigang Li, Zhi Fang, Jun Li, Zhenping Feng

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A020, June 17–21, 2019

Paper No: GT2019-90779

DOI: https://doi.org/10.1115/GT2019-90779

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Topics: Computer simulation, Leakage flows, Stators, Centrifugal pumps, Computational fluid dynamics, Drag (Fluid dynamics), Rotors, Damping, Fluids, Stiffness

Proceedings Papers

Rotordynamic Stability Evaluation With Constructed Forward Whirl Signals Based on Full Spectrum Technique: Numerical and Experimental Investigation

Qihang Li, Fulei Chu

Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT33A006, June 17–21, 2019

Paper No: GT2019-90417

DOI: https://doi.org/10.1115/GT2019-90417

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Topics: Signals, Stability, Whirls, Excitation, Carbon capture and storage, Rotors, Signal processing, Actuators, Bearings, Compressors

Proceedings Papers

Numerical Comparison of Static and Rotordynamic Characteristics for a Grooved-Stator/Smooth-Rotor and a Smooth-Stator/Grooved-Rotor Liquid Annular Seals

Zhigang Li, Zhi Fang, Jun Li, Zhenping Feng

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A021, June 17–21, 2019

Paper No: GT2019-90781

DOI: https://doi.org/10.1115/GT2019-90781

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Topics: Rotors, Stators, Whirls, Computational fluid dynamics, Drag (Fluid dynamics), Leakage, Leakage flows, Pressure drop, Sealing (Process), Transients (Dynamics)

Proceedings Papers

Pump Grooved Seals: A CFD Approach to Improve Bulk-Flow Model Predictions

Tingcheng Wu, Luis San Andrés

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A015, June 17–21, 2019

Paper No: GT2019-90499

DOI: https://doi.org/10.1115/GT2019-90499

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Topics: Computational fluid dynamics, Flow (Dynamics), Pumps, Leakage, Rotors, Shapes, Clearances (Engineering), Damping, Pressure, Stators

Proceedings Papers

Model and Experimental Verification of the Dynamic Forced Performance of a Tightly Sealed Squeeze Film Damper Supplied With a Bubbly Mixture

Luis San Andrés, Bonjin Koo

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A010, June 17–21, 2019

Paper No: GT2019-90330

DOI: https://doi.org/10.1115/GT2019-90330

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Topics: Dampers, Pressure, Lubricants, Damping, Cycles, Flow (Dynamics), Inertia (Mechanics), Piston rings, Stiffness, Whirls

Proceedings Papers

Simulation, Test and Mitigation of 1/2X Forward Whirl Following Rotor Drop Onto Auxiliary Bearings

Xiao Kang, Alan Palazzolo

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A034, June 17–21, 2019

Paper No: GT2019-91645

DOI: https://doi.org/10.1115/GT2019-91645

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Topics: Bearings, Rotors, Simulation, Whirls, Vibration, Ball bearings, Simulation models, Spin (Aerodynamics), Dampers, Elastomers

Proceedings Papers

Leakage and Dynamic Force Coefficients of a Pocket Damper Seal Operating Under a Wet Gas Condition: Tests vs. Predictions

Jing Yang, Luis San Andrés, Xueliang Lu

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A011, June 17–21, 2019

Paper No: GT2019-90331

DOI: https://doi.org/10.1115/GT2019-90331

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Topics: Dampers, Leakage, Computational fluid dynamics, Flow (Dynamics), Damping, Rotors, Pressure, Stiffness, Excitation, Cavities

Proceedings Papers

Nonlinear Vibration Prediction of a Highly Flexible Rotor Supported by an Axial Groove Journal Bearing Considering Journal Angular Whirling Motion

Nuntaphong Koondilogpiboon, Tsuyoshi Inoue

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A024, June 17–21, 2019

Paper No: GT2019-90951

DOI: https://doi.org/10.1115/GT2019-90951

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Topics: Journal bearings, Nonlinear vibration, Rotors, Whirls, Disks, Bearings, Bifurcation, Ball bearings, Steady state

NARROW

Mixed Whirl Modes in Numerical Rotordynamics Analysis

Semi-Analytical Model for High-Speed Rotor Whirl Prediction: An Assumed Modes Formulation for an Axisymmetric Rotor With Non-Uniform Properties

A Comparison of Static and Rotordynamic Characteristics for Three Types of Impeller Front Seals in a Liquid Oxygen Turbopump

Measured Leakage and Rotordynamic Force Coefficients for Two Liquid Annular Seal Configurations: Smooth-Rotor/Grooved-Stator Versus Grooved-Rotor/Smooth-Stator

Static and Rotordynamic Characteristics for Two Novel Hole-Pattern Annular Liquid Seals With Circumferentially- /Axially- Oblique Hole Cavities

Rotordynamic Characteristics of the Straight-Through Labyrinth Seal Based On the Applicability Analysis of Leakage Models Using Bulk-Flow Method

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

Rotordynamic Performance of the Interlocking Labyrinth Seal With a Tilting Rotor

Numerical Investigation on the Static and Rotordynamic Characteristics for Two Types of Novel Mixed Helical Groove Seals

A Novel Controlled-Motion Test Rig to Evaluate Effect of Synchronous and Subsynchronous Lateral Vibration on Reliability and Performance of Mechanical Seals in Pumps

Investigation of Rotordynamic Coefficients of Gas Labyrinth Seals Using a Steady State CFD Approach

A Method for Rotordynamic Force Prediction of a Centrifugal Compressor Impeller Front Cavity Using a Transient Whirling CFD Technique

Numerical Modeling of Static and Rotordynamic Characteristics for Three Types of Helically-Grooved Liquid Annular Seals

Rotordynamic Stability Evaluation With Constructed Forward Whirl Signals Based on Full Spectrum Technique: Numerical and Experimental Investigation

Numerical Comparison of Static and Rotordynamic Characteristics for a Grooved-Stator/Smooth-Rotor and a Smooth-Stator/Grooved-Rotor Liquid Annular Seals

Pump Grooved Seals: A CFD Approach to Improve Bulk-Flow Model Predictions

Model and Experimental Verification of the Dynamic Forced Performance of a Tightly Sealed Squeeze Film Damper Supplied With a Bubbly Mixture

Simulation, Test and Mitigation of 1/2X Forward Whirl Following Rotor Drop Onto Auxiliary Bearings

Leakage and Dynamic Force Coefficients of a Pocket Damper Seal Operating Under a Wet Gas Condition: Tests vs. Predictions

Nonlinear Vibration Prediction of a Highly Flexible Rotor Supported by an Axial Groove Journal Bearing Considering Journal Angular Whirling Motion

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