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Giuseppe Vannini
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Proceedings Papers

Neural Network Application to Rotordynamic Predictions of an Overhung Flexible Rotor

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

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

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

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

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

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

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 Article titled, 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

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 Article titled, 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

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

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

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 Article titled, 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

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 Article titled, 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

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

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

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

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 Article 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), 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

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

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

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 Article titled, 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

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 Article titled, 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