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Giuseppe Vannini
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Proceedings Papers

Neural Network Application to Rotordynamic Predictions of an Overhung Flexible Rotor

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Giulio Deiana, Giuseppe Vannini, Giulia Meazzini, Francesco Cangioli, Enrico Meli
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT26A003, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121854
https://doi.org/10.1115/GT2024-121854
View Paper titled, Neural Network Application to Rotordynamic Predictions of an Overhung Flexible Rotor
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Topics: Artificial neural networks, Rotors, Vibration
Proceedings Papers

High Speed H2 Centrifugal Compressor: a General Review of Journal Bearing Design and Experimental Validation

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Giuseppe Vannini, Carolina Giannelli, Dario Matina, Filippo Cangioli
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT26A005, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122482
https://doi.org/10.1115/GT2024-122482
View Paper titled, High Speed H2 Centrifugal Compressor: a General Review of Journal Bearing Design and Experimental Validation
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Topics: Bearings, Bending (Stress), Compressors, Design, Hydrogen, Journal bearings, Rotors, Bearing design, Compression, Dampers
Proceedings Papers

CFD Analysis and Experimental Validation of a sCO 2 Pocket Damper Seal

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Manjush Ganiger, Giuseppe Vannini, Manuele Bigi, R. Vidyasagar, Filippo Cangioli
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A014, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102395
https://doi.org/10.1115/GT2023-102395
View Paper titled, CFD Analysis and Experimental Validation of a sCO 2 Pocket Damper Seal
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Topics: Computational fluid dynamics, Dampers, Pistons
Proceedings Papers

Rotordynamic Design and Experimental Validation of a sCO2 Centrifugal Compressor Equipped With a Pocket Damper Seal

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Giuseppe Vannini, Matteo Dozzini, Filippo Cangioli
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A001, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79563
https://doi.org/10.1115/GT2022-79563
View Paper titled, Rotordynamic Design and Experimental Validation of a sCO2 Centrifugal Compressor Equipped With a Pocket Damper Seal
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Topics: Compressors, Dampers, Design, Vibration, Density, Carbon dioxide, Engineering prototypes, Fluids, Pistons, Stability
Proceedings Papers

A Novel Hybrid Seal: Design and Experimental Validation on a High Pressure Rotordynamic Test Rig

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Giuseppe Vannini, Benjamin Defoy, Manjush Ganiger, Carlo Mazzali
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A016, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59371
https://doi.org/10.1115/GT2021-59371
View Paper titled, A Novel Hybrid Seal: Design and Experimental Validation on a High Pressure Rotordynamic Test Rig
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Topics: Design, High pressure (Physics), Honeycomb structures, Pistons, Pressure, Compressors, Computational fluid dynamics, Control equipment, Dampers, Engines
Proceedings Papers

Rotordynamic Evaluation of a Large High-Speed Rotor Equipped With Flexure Pivot Journal Bearings and Integral Squeeze Film Damper

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Giuseppe Vannini, Alice Innocenti, Filippo Cangioli, Kim Jongsoo
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58800
https://doi.org/10.1115/GT2021-58800
View Paper titled, Rotordynamic Evaluation of a Large High-Speed Rotor Equipped With Flexure Pivot Journal Bearings and Integral Squeeze Film Damper
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Topics: Bearings, Bending (Stress), Dampers, Journal bearings, Rotors
Journal Articles

Experiments on a Large Flexure Pivot Journal Bearing: Summary of Test Results and Comparison With Predictions

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Giuseppe Vannini, Filippo Cangioli, Enrico Ciulli, Matteo Nuti, Paola Forte, Jongsoo Kim, Richard Livermore-Hardy
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2020, 142(3): 031004.
Paper No: GTP-19-1320
https://doi.org/10.1115/1.4045520
Published Online: January 17, 2020
View Articletitled, Experiments on a Large Flexure Pivot Journal Bearing: Summary of Test Results and Comparison With Predictions
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Topics: Bearings, Bending (Stress), Design, Journal bearings, Stress, Temperature, Stiffness, Flow (Dynamics)
Journal Articles

A Novel Bulk-Flow Model for Pocket Damper Seals

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Filippo Cangioli, Giuseppe Vannini, Thomas Chirathadam
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2020, 142(1): 011012.
Paper No: GTP-19-1490
https://doi.org/10.1115/1.4045000
Published Online: November 28, 2019
View Articletitled, A Novel Bulk-Flow Model for Pocket Damper Seals
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Topics: Dampers, Damping, Flow (Dynamics), Pressure, Rotors, Leakage, Momentum, Shear stress, Stiffness, Cavities
Proceedings Papers

Experiments on a Large Flexure Pivot Journal Bearing: Summary of Test Results and Comparison With Predictions

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Giuseppe Vannini, Filippo Cangioli, Enrico Ciulli, Matteo Nuti, Paola Forte, Jongsoo Kim, Richard Livermore-Hardy
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A009, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90278
https://doi.org/10.1115/GT2019-90278
View Paper titled, Experiments on a Large Flexure Pivot Journal Bearing: Summary of Test Results and Comparison With Predictions
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Topics: Bending (Stress), Journal bearings, Stress, Compressors, Bearings, Boundary-value problems, Design, Flow (Dynamics), Hydraulic actuators, Instrumentation
Proceedings Papers

A Novel Bulk-Flow Model for Pocket Damper Seals

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Filippo Cangioli, Giuseppe Vannini, Thomas Chirathadam
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A002, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90059
https://doi.org/10.1115/GT2019-90059
View Paper titled, A Novel Bulk-Flow Model for Pocket Damper Seals
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Topics: Dampers, Flow (Dynamics), Rotors, Sealing (Process), Boundary layers, Compressors, Energy dissipation, Friction, High pressure (Physics), Leakage
Journal Articles

Stratified Two-Phase Flow in Annular Seals

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Gioacchino Grimaldi, Giuseppe Pascazio, Giuseppe Vannini, Luciano Afferrante
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2019, 141(7): 071006.
Paper No: GTP-18-1642
https://doi.org/10.1115/1.4042396
Published Online: January 16, 2019
View Articletitled, Stratified Two-Phase Flow in Annular Seals
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Topics: Flow (Dynamics), Leakage, Pressure, Rotors, Shear stress, Two-phase flow, Momentum, Stators, Turbulence
Journal Articles

Rotordynamic Characterization of a Staggered Labyrinth Seal: Experimental Test Data and Comparison With Predictions

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Filippo Cangioli, Giuseppe Vannini, Paolo Pennacchi, Lorenzo Ciuchicchi, Leonardo Nettis, Steven Chatterton
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2019, 141(1): 011009.
Paper No: GTP-18-1293
https://doi.org/10.1115/1.4040688
Published Online: September 14, 2018
View Articletitled, Rotordynamic Characterization of a Staggered Labyrinth Seal: Experimental Test Data and Comparison With Predictions
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Topics: Cavities, Flow (Dynamics), Leakage, Pressure, Rotors, Damping, Fluids, Stiffness, Momentum, Clearances (Engineering)
Proceedings Papers

Analysis of Rotordynamic and Thermodynamic Performance of a Multistage Centrifugal Compressor Operating in the Minimum Flow Region

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Marco Giachi, Giuseppe Vannini, Pier Luigi Di Pillo
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT33A026, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76847
https://doi.org/10.1115/GT2018-76847
View Paper titled, Analysis of Rotordynamic and Thermodynamic Performance of a Multistage Centrifugal Compressor Operating in the Minimum Flow Region
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Topics: Compressors, Flow (Dynamics), Machinery, Engineering design processes, Vibration
Proceedings Papers

Rotordynamic Characterization of Labyrinth Seals in Steam Turbines: Effects of Thermal and Mechanical Loads

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Filippo Cangioli, Steven Chatterton, Paolo Pennacchi, Leonardo Nettis, Lorenzo Ciuchicchi, Andrea Vania, Giuseppe Vannini
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A001, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75009
https://doi.org/10.1115/GT2018-75009
View Paper titled, Rotordynamic Characterization of Labyrinth Seals in Steam Turbines: Effects of Thermal and Mechanical Loads
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Topics: Steam turbines, Stress, Flow (Dynamics), Machinery, Stability, Annulus, Centrifugal force, Clearances (Engineering), Geometry, Heat transfer
Proceedings Papers

Rotordynamic Characterization of a Staggered Labyrinth Seal: Experimental Test Data and Comparison With Predictions

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Filippo Cangioli, Giuseppe Vannini, Paolo Pennacchi, Lorenzo Ciuchicchi, Leonardo Nettis, Steven Chatterton
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A003, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75072
https://doi.org/10.1115/GT2018-75072
View Paper titled, Rotordynamic Characterization of a Staggered Labyrinth Seal: Experimental Test Data and Comparison With Predictions
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Topics: Clearances (Engineering), Compressors, Dynamics (Mechanics), Flow (Dynamics), Fluids, Gas turbines, High pressure (Physics), Kinetic energy, Leakage, Pressure
Journal Articles

On the Thermodynamic Process in the Bulk-Flow Model for the Estimation of the Dynamic Coefficients of Labyrinth Seals

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Filippo Cangioli, Paolo Pennacchi, Giuseppe Vannini, Lorenzo Ciuchicchi, Andrea Vania, Steven Chatterton, Phuoc Vinh Dang
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2018, 140(3): 032502.
Paper No: GTP-17-1277
https://doi.org/10.1115/1.4037919
Published Online: October 17, 2017
View Articletitled, On the Thermodynamic Process in the Bulk-Flow Model for the Estimation of the Dynamic Coefficients of Labyrinth Seals
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Topics: Flow (Dynamics), Rotors, Enthalpy, Thermodynamic processes, Cavities
Proceedings Papers

On the Thermodynamic Process in the Bulk-Flow Model for the Estimation of the Dynamic Coefficients of Labyrinth Seals

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Filippo Cangioli, Paolo Pennacchi, Giuseppe Vannini, Lorenzo Ciuchicchi, Andrea Vania, Steven Chatterton, Phuoc Vinh Dang
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A001, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63012
https://doi.org/10.1115/GT2017-63012
View Paper titled, On the Thermodynamic Process in the Bulk-Flow Model for the Estimation of the Dynamic Coefficients of Labyrinth Seals
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Topics: Flow (Dynamics), Thermodynamic processes, Enthalpy, Computational fluid dynamics, Leakage, Cavities, Clearances (Engineering), Fluids, Rotors, Shear stress
Proceedings Papers

Sensitivity Analysis of the One-Control Volume Bulk-Flow Model for a 14 Teeth-on-Stator Straight-Through Labyrinth Seal

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Filippo Cangioli, Paolo Pennacchi, Giacomo Riboni, Giuseppe Vannini, Lorenzo Ciuchicchi, Andrea Vania, Steven Chatterton
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A002, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63014
https://doi.org/10.1115/GT2017-63014
View Paper titled, Sensitivity Analysis of the One-Control Volume Bulk-Flow Model for a 14 Teeth-on-Stator Straight-Through Labyrinth Seal
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Topics: Flow (Dynamics), Sensitivity analysis, Stators, Leakage, Fluid dynamics, Friction, Cavities, Discharge coefficient, Dynamics (Mechanics), Fluids
Journal Articles

A Rotordynamic, Thermal, and Thrust Load Performance Gas Bearing Test Rig and Test Results for Tilting Pad Journal Bearings and Spiral Groove Thrust Bearings

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Aaron M. Rimpel, Giuseppe Vannini, Jongsoo Kim
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2017, 139(12): 122501.
Paper No: GTP-16-1259
https://doi.org/10.1115/1.4037315
Published Online: August 16, 2017
View Articletitled, A Rotordynamic, Thermal, and Thrust Load Performance Gas Bearing Test Rig and Test Results for Tilting Pad Journal Bearings and Spiral Groove Thrust Bearings
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Topics: Bearings, Stress, Thrust, Thrust bearings, Flow (Dynamics), Pressure, Gas bearings, Temperature, Journal bearings, Rotors
Journal Articles

Rotordynamic Computational and Experimental Characterization of a Convergent Honeycomb Seal Tested With Negative Preswirl, High Pressure With Static Eccentricity and Angular Misalignment

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Giuseppe Vannini, Carlo Mazzali, Harald Underbakke
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2017, 139(5): 052502.
Paper No: GTP-16-1248
https://doi.org/10.1115/1.4034965
Published Online: December 1, 2016
View Articletitled, Rotordynamic Computational and Experimental Characterization of a Convergent Honeycomb Seal Tested With Negative Preswirl, High Pressure With Static Eccentricity and Angular Misalignment
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Topics: Clearances (Engineering), Computational fluid dynamics, Damping, Design, Geometry, High pressure (Physics), Honeycomb structures, Pressure, Rotors, Stiffness