Topics: Clearances (Engineering) , Flutter (Aerodynamics) , Modeling , Stability , Accounting , Cavities , Computer simulation , Engineering simulation , Kinetic energy , Navier-Stokes equations

On the Forced Response Predictions and Life Improvements of an Industrial Axial Compressor Rotor Blade

Senthil Krishnababu, Giuseppe Bruni, Agnieszka Frach

GT 2021; V09AT23A007https://doi.org/10.1115/GT2021-58923

Abstract

View Articletitled, On the Forced Response Predictions and Life Improvements of an Industrial Axial Compressor Rotor Blade

PDF

Topics: Blades , Compressors , Rotors , Design , Engines , Excitation , High cycle fatigue , Resonance , Computation , Cycles

Practical Method for Burner Staging Turbine Forced Response Evaluation

Nikola Kafedzhiyski, Maria Mayorca

GT 2021; V09AT23A008https://doi.org/10.1115/GT2021-59040

Abstract

View Articletitled, Practical Method for Burner Staging Turbine Forced Response Evaluation

PDF

Topics: Computational fluid dynamics , Turbines , Combustion chambers , Excitation , Stress , Temperature distribution , Blades , Combustion , Emissions , Engineers

Investigation of Mistuned Oscillating Cascade Using Fully-Coupled Method

H. M. Phan, L. He

GT 2021; V09AT23A009https://doi.org/10.1115/GT2021-59124

Abstract

View Articletitled, Investigation of Mistuned Oscillating Cascade Using Fully-Coupled Method

PDF

Topics: Cascades (Fluid dynamics) , Oscillations , Blades , Flutter (Aerodynamics) , Damping , Dynamics (Mechanics) , Fluid structure interaction , Inspection , Signals , Simulation

Forced Response Excitation of a Compressor Stator Owing to Shock Wave Induced by Adjacent Rotor Blade

Toshimasa Miura, Naoto Sakai, Naoki Kanazawa, Kentaro Nakayama

GT 2021; V09AT23A010https://doi.org/10.1115/GT2021-59147

Abstract

View Articletitled, Forced Response Excitation of a Compressor Stator Owing to Shock Wave Induced by Adjacent Rotor Blade

PDF

Topics: Blades , Compressors , Excitation , Rotors , Shock waves , Stators , Fluids , Simulation , Fluid structure interaction , Vibration

Forced Response Excitation due to the Stator Vanes of Two and Three Compressor Stages Away

Toshimasa Miura, Naoto Sakai, Naoki Kanazawa, Kentaro Nakayama

GT 2021; V09AT23A011https://doi.org/10.1115/GT2021-59149

Abstract

View Articletitled, Forced Response Excitation due to the Stator Vanes of Two and Three Compressor Stages Away

PDF

Topics: Compressors , Excitation , Stators , Blades , Vibration , Computational fluid dynamics , Fluid structure interaction , Rotors , Simulation , Gas turbines

Global Stability Analysis of an Academic Rotor/Stator Cavity Subject to Periodic and Simple Wall Oscillations

Mark Noun, Laurent Gicquel, Gabriel Staffelbach

GT 2021; V09AT23A012https://doi.org/10.1115/GT2021-59188

Abstract

View Articletitled, Global Stability Analysis of an Academic Rotor/Stator Cavity Subject to Periodic and Simple Wall Oscillations

PDF

Topics: Cavities , Oscillations , Rotors , Stability , Stators , Flow (Dynamics) , Fluids , Engines , Blades , Disks

Supersonic Aerodynamic Instability Characteristics of Bidirectional Porous Functionally Graded Panel

Shashidhar Reddy Rajidi, Abhay Gupta, Satyajit Panda

GT 2021; V09AT23A013https://doi.org/10.1115/GT2021-59346

Abstract

View Articletitled, Supersonic Aerodynamic Instability Characteristics of Bidirectional Porous Functionally Graded Panel

PDF

Topics: Advanced materials , Aerospace industry , Alloys , Buckling , Finite element model , Flutter (Aerodynamics) , Functionally graded materials , Oscillations , Pistons , Porosity

Effect of Shock Wave Behavior on Unsteady Aerodynamic Characteristics of Oscillating Transonic Compressor Cascade

Jiuliang Gan, Toshinori Watanabe, Takehiro Himeno

GT 2021; V09AT23A014https://doi.org/10.1115/GT2021-59416

Abstract

View Articletitled, Effect of Shock Wave Behavior on Unsteady Aerodynamic Characteristics of Oscillating Transonic Compressor Cascade

PDF

Topics: Cascades (Fluid dynamics) , Compressors , Oscillations , Shock waves

Suppression of Non-Synchronous-Vibration Through Intentional Aerodynamic and Structural Mistuning

Sina Stapelfeldt, Christoph Brandstetter

GT 2021; V09AT23A015https://doi.org/10.1115/GT2021-59659

Abstract

View Articletitled, Suppression of Non-Synchronous-Vibration Through Intentional Aerodynamic and Structural Mistuning

PDF

Topics: Vibration , Blades , Compressors , Design , Fans , Locks (Waterways) , Safety , Stability

High Efficiency Active Damping on a Fan Rotor Blade in Case Of Resonant Vibrations by Means of Piezoelectric Actuators

Andrea Rossi, Fabio Botta, Ambra Giovannelli, Nicola Pio Belfiore

GT 2021; V09AT23A016https://doi.org/10.1115/GT2021-59999

Abstract

View Articletitled, High Efficiency Active Damping on a Fan Rotor Blade in Case Of Resonant Vibrations by Means of Piezoelectric Actuators

PDF

Topics: Active damping , Blades , Piezoelectric actuators , Resonance , Rotors , Vibration , Excitation , Computational fluid dynamics , Finite element analysis , Flow (Dynamics)

A Novel Deep Learning Model for the Flow Field Reconstruction of An Oscillating Airfoil

Yunzhu Li, Tianyuan Liu, Jiarui You, Yonghui Xie

GT 2021; V09AT23A017https://doi.org/10.1115/GT2021-60075

Abstract

View Articletitled, A Novel Deep Learning Model for the Flow Field Reconstruction of An Oscillating Airfoil

PDF

Topics: Airfoils , Artificial neural networks , Flow (Dynamics) , Oscillations

Physical Modal for Acoustic Resonance Based on the Circular Cavity Structure in the Compressor

Zhao Fengtong, Chen Jianfei, Yang Mingsui, Sha Yundong, Luan Xiaochi

GT 2021; V09AT23A018https://doi.org/10.1115/GT2021-60346

Abstract

View Articletitled, Physical Modal for Acoustic Resonance Based on the Circular Cavity Structure in the Compressor

PDF

Topics: Acoustics , Cavities , Compressors , Resonance

Structures and Dynamics: Bearing and Seal Dynamics

Influence of Ambient Pressure on Measured Stiffness and Damping of Radial Gas Foil Bearings

Jason Wilkes, Steve White

GT 2021; V09AT24A001https://doi.org/10.1115/GT2021-02669

Abstract

View Articletitled, Influence of Ambient Pressure on Measured Stiffness and Damping of Radial Gas Foil Bearings

PDF

Topics: Damping , Foil bearings , Pressure , Stiffness , Bearings , Gas bearings , Gases

Static Performance of Smooth Liquid Annular Seals in the Transition and Turbulent Regimes

Dara W. Childs, Joshua Bullock

GT 2021; V09AT24A002https://doi.org/10.1115/GT2021-58543

Abstract

View Articletitled, Static Performance of Smooth Liquid Annular Seals in the Transition and Turbulent Regimes

PDF

Topics: Turbulence , Flow (Dynamics) , Reynolds number , Clearances (Engineering) , Displacement , Flowmeters , Friction , Leakage , Pressure , Pressure drop

Experimental Studies on Dry Gas Seals With Time-Resolved Film Thickness Measurements

Jingjing Luo, Dieter Brillert

GT 2021; V09AT24A003https://doi.org/10.1115/GT2021-58547

Abstract

View Articletitled, Experimental Studies on Dry Gas Seals With Time-Resolved Film Thickness Measurements

PDF

Topics: Film thickness , Sealing (Process) , Compressors , Computer simulation , High pressure (Physics) , Matlab , Pressure , Sensors , Turbochargers , Vibration

On the Experimental Dynamic Force Performance of a Squeeze Film Damper Supplied Through a Check Valve and Sealed With O-Rings

Luis San Andrés, Bryan Rodríguez

GT 2021; V09AT24A004https://doi.org/10.1115/GT2021-58627

Abstract

View Articletitled, On the Experimental Dynamic Force Performance of a Squeeze Film Damper Supplied Through a Check Valve and Sealed With O-Rings

PDF

Topics: Dampers , Seals , Valves

CFD Analysis of the Influence of Gas Content on the Rotordynamic Force Coefficients for a Circumferentially Grooved Annular Seal for Multiple Phase Pumps

Tingcheng Wu, Luis San Andrés, Xueliang Lu

GT 2021; V09AT24A005https://doi.org/10.1115/GT2021-58631

Abstract

View Articletitled, CFD Analysis of the Influence of Gas Content on the Rotordynamic Force Coefficients for a Circumferentially Grooved Annular Seal for Multiple Phase Pumps

PDF

Topics: Computational fluid dynamics , Pumps , Damping , Pressure , Engineering simulation , Excitation , Flow (Dynamics) , Rotors , Simulation , Stability

Mechanical and Thermal Deformation Analysis of a Large Polymer Lined Tilting Pad Journal Bearing

Michael Stottrop, Beate Bender

GT 2021; V09AT24A006https://doi.org/10.1115/GT2021-58734

Abstract

View Articletitled, Mechanical and Thermal Deformation Analysis of a Large Polymer Lined Tilting Pad Journal Bearing

PDF

Topics: Journal bearings , Linings (Textiles) , Polymers , Thermal deformation

Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing (LBP) With Flooded Ends

Luis San Andrés, Jonathan Toner, Andy Alcantar

GT 2021; V09AT24A007https://doi.org/10.1115/GT2021-58771

Abstract

View Articletitled, Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing (LBP) With Flooded Ends

PDF

Topics: Bearings , Flow (Dynamics) , Journal bearings , Stress , Temperature , Drag (Fluid dynamics) , Babbitt metal , Damping , Energy efficiency , Floods

Experimental Investigation Into Gravity Drained Journal Bearings

Rohit Khattar, Sudeep Bosu, Kashinath Akki, Amit Paspulati

GT 2021; V09AT24A008https://doi.org/10.1115/GT2021-58804

Abstract

View Articletitled, Experimental Investigation Into Gravity Drained Journal Bearings

PDF

Topics: Gravity (Force) , Journal bearings , Bearings , Design , Flow (Dynamics) , Drainage , Kinetic energy , Rotors , Swirling flow , Failure

Visualization of Destabilization Force of Labyrinth Gas Seal Using Fast-Responding Pressure Sensitive Paint

Shingo Nishida, Makoto Iwasaki, Naoto Omura, Kazuyuki Nakakita, Tsutomu Nakajima

GT 2021; V09AT24A009https://doi.org/10.1115/GT2021-58893

Abstract

View Articletitled, Visualization of Destabilization Force of Labyrinth Gas Seal Using Fast-Responding Pressure Sensitive Paint

PDF

Topics: Computational fluid dynamics , Paints , Pressure , Vibration , Visualization

Making Better Swirl Brakes Using Computational Fluid Dynamics: Performance Enhancement From Geometry Variation

Jing Yang, Luis San Andrés

GT 2021; V09AT24A010https://doi.org/10.1115/GT2021-58956

Abstract

View Articletitled, Making Better Swirl Brakes Using Computational Fluid Dynamics: Performance Enhancement From Geometry Variation

PDF

Topics: Brakes , Computational fluid dynamics , Geometry

An Analytical Two-Phase Flow Model for Prediction of Leakage in Wet Gas Labyrinth Seals and Pocket Damper Seals. Is Simplicity Still Desired?

Jing Yang, Luis San Andrés

GT 2021; V09AT24A011https://doi.org/10.1115/GT2021-58958

Abstract

View Articletitled, An Analytical Two-Phase Flow Model for Prediction of Leakage in Wet Gas Labyrinth Seals and Pocket Damper Seals. Is Simplicity Still Desired?

PDF

Topics: Dampers , Leakage , Two-phase flow

Numerical Evaluation and High-Speed Rotating Test on Circular Arc Spring Dampers for Centrifugal Compressors

Ryota Takeuchi, Hidetsugu Ishimaru, Hideaki Yamashita, Takahiko Inoue, Shota Yabui, Tsuyoshi Inoue

GT 2021; V09AT24A012https://doi.org/10.1115/GT2021-58979

Abstract

View Articletitled, Numerical Evaluation and High-Speed Rotating Test on Circular Arc Spring Dampers for Centrifugal Compressors

PDF

Topics: Compressors , Dampers , Springs , Bearings , Damping , Evaluation methods , Fluid films , Rotors , Stability , Cavitation

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

GT 2021; V09AT24A013https://doi.org/10.1115/GT2021-58996

Abstract

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

PDF

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

Bearing Skidding Detection for High Speed and Aero Engine Applications

Azzedine Dadouche, Rami Kerrouche

GT 2021; V09AT24A014https://doi.org/10.1115/GT2021-59122

Abstract

View Articletitled, Bearing Skidding Detection for High Speed and Aero Engine Applications

PDF

Topics: Aircraft engines , Bearings , Lubrication , Roller bearings , Rollers , Stress , Acoustics , Damage , Data acquisition systems , Electromagnetic induction

Measurements of Static and Dynamic Load Performance of a 102 mm Carbon-Graphite Porous Surface Tilting-Pad Gas Journal Bearing

Luis San Andrés, Rachel Bolen, Jing Yang, Ryan McGowan

GT 2021; V09AT24A015https://doi.org/10.1115/GT2021-59131

Abstract

View Articletitled, Measurements of Static and Dynamic Load Performance of a 102 mm Carbon-Graphite Porous Surface Tilting-Pad Gas Journal Bearing

PDF

Topics: Carbon fibers , Gas bearings , Journal bearings , Stress

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

Giuseppe Vannini, Benjamin Defoy, Manjush Ganiger, Carlo Mazzali

GT 2021; V09AT24A016https://doi.org/10.1115/GT2021-59371

Abstract

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

PDF

Topics: Design , High pressure (Physics) , Honeycomb structures , Pistons , Pressure , Compressors , Computational fluid dynamics , Control equipment , Dampers , Engines

Effect of Pad Material, Copper vs. Steel, on the Performance of a Tilting Pad Journal Bearing: Measurements and Predictions

Luis San Andrés, Hussain Kaizar, Hardik Jani, Manish Thorat

GT 2021; V09AT24A017https://doi.org/10.1115/GT2021-59401

Abstract

View Articletitled, Effect of Pad Material, Copper vs. Steel, on the Performance of a Tilting Pad Journal Bearing: Measurements and Predictions

PDF

Topics: Copper , Journal bearings , Steel , Bearings , Stress , Temperature , Stiffness , Clearances (Engineering) , Damping , Drag (Fluid dynamics)

Determination of the Area of Rational Use of Hybrid Bearings With Steel Rings and Ceramic Rolling Elements in High-Speed Aircraft Engines

Yury Lavrentyev, Nikolay Petrov, Yury Nozhnitsky

GT 2021; V09AT24A018https://doi.org/10.1115/GT2021-59872

Abstract

View Articletitled, Determination of the Area of Rational Use of Hybrid Bearings With Steel Rings and Ceramic Rolling Elements in High-Speed Aircraft Engines

PDF

Topics: Aircraft engines , Bearings , Ceramics , Heat , Steel

Theoretical Study on Static Performance of Double-Bump Foil Bearings

Fangcheng Xu, Jianhua Chu, Wenlin Luan, Guang Zhao

GT 2021; V09AT24A019https://doi.org/10.1115/GT2021-59937

Abstract

View Articletitled, Theoretical Study on Static Performance of Double-Bump Foil Bearings

PDF

Topics: Clearances (Engineering) , Energy consumption , Foil bearings , Friction , Stiffness , Stress

Frequency Dependancy of Dynamic Force Coefficients for Hermetic Squeeze Film Dampers Utilizing Fluid-Bounding Flexible Structures

Bugra Ertas, Keith Gary

GT 2021; V09AT24A020https://doi.org/10.1115/GT2021-60007

Abstract

View Articletitled, Frequency Dependancy of Dynamic Force Coefficients for Hermetic Squeeze Film Dampers Utilizing Fluid-Bounding Flexible Structures

PDF

Topics: Dampers , Flexible structures , Fluids , Design , Fluid structure interaction , Computational fluid dynamics , Finite element analysis , Architecture , Bearing design , Computer software

Effects of Increased Tooth Clearance on the Performance of a Labyrinth Seal With Oil-Rich Bubbly Laminar Flow

Min Zhang, Dara W. Childs

GT 2021; V09AT24A021https://doi.org/10.1115/GT2021-60106

Abstract

View Articletitled, Effects of Increased Tooth Clearance on the Performance of a Labyrinth Seal With Oil-Rich Bubbly Laminar Flow

PDF

Topics: Clearances (Engineering) , Laminar flow , Pumps

Performance of a Long Smooth Multiphase Pump Seal in Different Flow Regimes

Min Zhang, Dara W. Childs

GT 2021; V09AT24A022https://doi.org/10.1115/GT2021-60108

Abstract

View Articletitled, Performance of a Long Smooth Multiphase Pump Seal in Different Flow Regimes

PDF

Topics: Flow (Dynamics) , Pumps

Optimization of an Oil Film Journal Bearing for Temperature Reduction

Steven Chatterton, Paolo Pennacchi, Andrea Vania, Phuoc Vinh Dang

GT 2021; V09AT24A023https://doi.org/10.1115/GT2021-60159

Abstract

View Articletitled, Optimization of an Oil Film Journal Bearing for Temperature Reduction

PDF

Topics: Computer simulation , Journal bearings , Optimization , Temperature

Numerical Investigation on Hydrodynamic Characteristics of Supercritical CO₂ Cylindrical Film Seal

Qiuwan Du, Zhufeng Liu, Di Zhang, Yonghui Xie

GT 2021; V09AT24A024https://doi.org/10.1115/GT2021-60175

Abstract

View Articletitled, Numerical Investigation on Hydrodynamic Characteristics of Supercritical CO<sub>2</sub> Cylindrical Film Seal

PDF

Topics: Sealing (Process) , Supercritical carbon dioxide , Turbomachinery

Thermohydrodynamic Modeling of a Tapered-Land Thrust Bearing With Validation Against Experimental Data

Seckin Gokaltun

GT 2021; V09AT24A025https://doi.org/10.1115/GT2021-60203

Abstract

View Articletitled, Thermohydrodynamic Modeling of a Tapered-Land Thrust Bearing With Validation Against Experimental Data

PDF

Topics: Modeling , Thermohydrodynamics , Thrust bearings , Bearings , Stress , Fluid films , Heat transfer , Computational fluid dynamics , Deformation , Pressure

Optically Observed Turbulence In Thrust Collars at Low Critical Reynolds Number Including Numerical Predictions

Thomas Kerr, Adolfo Delgado

GT 2021; V09AT24A026https://doi.org/10.1115/GT2021-60360

Abstract

View Articletitled, Optically Observed Turbulence In Thrust Collars at Low Critical Reynolds Number Including Numerical Predictions

PDF

Topics: Reynolds number , Thrust , Turbulence , Stress , Computational fluid dynamics , Bearings , Flow (Dynamics) , Modeling , Particle spin , Rotation

A Model for Tilting Pad Thrust Bearings Operating With Reduced Flow Rate – Do Benefits Outweigh Risks?

Rasool Koosha, Luis San Andrés

GT 2021; V09AT24A027https://doi.org/10.1115/GT2021-60396

Abstract

View Articletitled, A Model for Tilting Pad Thrust Bearings Operating With Reduced Flow Rate – Do Benefits Outweigh Risks?

PDF

Topics: Flow (Dynamics) , Thrust bearings

Structures and Dynamics: Emerging Methods in Design and Engineering

Discrete Element Method Simulations of Additively Manufactured Components With Integrated Particle Dampers

Daniel Kiracofe, Matthew Postell, Onome Scott-Emuakpor, Brian Runyon, Tommy George, Jr.

GT 2021; V09AT25A001https://doi.org/10.1115/GT2021-58462

Abstract

View Articletitled, Discrete Element Method Simulations of Additively Manufactured Components With Integrated Particle Dampers

PDF

Topics: Additive manufacturing , Dampers , Discrete element methods , Particulate matter , Simulation , Damping , Geometry , Vibration , Cantilever beams , Collisions (Physics)

On Virtual Clearance Monitoring of Steam Turbine by Using Model Order Reduction

Hiroshi Ito, Shoichiro Hosomi, Norikazu Tezuka, Tomohiro Ishida

GT 2021; V09AT25A002https://doi.org/10.1115/GT2021-59003

Abstract

View Articletitled, On Virtual Clearance Monitoring of Steam Turbine by Using Model Order Reduction

PDF

Topics: Clearances (Engineering) , Steam turbines , Sensors , Errors , Rotors , Data fusion , Finite element analysis , Stress , Finite element model , High temperature