Volume 147 Issue 6 | J. Eng. Gas Turbines Power

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Volume 147, Issue 6

June 2025

ISSN 0742-4795

EISSN 1528-8919

Research Papers

Validation of a Methodology to Assess the Flutter Limit-Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part I: Mach Number Effects

Alvaro Escudero, Salvador Rodríguez-Blanco, Roque Corral

J. Eng. Gas Turbines Power. June 2025, 147(6): 061001. doi: https://doi.org/10.1115/1.4066587

Abstracts

View articletitled, Validation of a Methodology to Assess the Flutter Limit-Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part I: Mach Number Effects

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Topics: Blades , Flutter (Aerodynamics) , Mach number , Pressure , Rotors , Vibration , Cycles , Damping , Design , Turbines

Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part II: Rotational Speed Effects

Alvaro Escudero, Salvador Rodríguez-Blanco, Roque Corral

J. Eng. Gas Turbines Power. June 2025, 147(6): 061002. doi: https://doi.org/10.1115/1.4066584

Abstracts

View articletitled, Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part II: Rotational Speed Effects

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Topics: Blades , Flutter (Aerodynamics) , Pressure , Rotors , Vibration , Damping , Turbines , Friction , Mach number , Bladed disks

Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part I: Characterization of the Geometric Scatter and Its Effect on Forced Response

Óscar Pérez Escobar, Vicente Timón, Juan Manuel Gallardo

J. Eng. Gas Turbines Power. June 2025, 147(6): 061003. doi: https://doi.org/10.1115/1.4066585

Abstract

View articletitled, Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part I: Characterization of the Geometric Scatter and Its Effect on Forced Response

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Topics: Airfoils , Electromagnetic scattering , Engines , Geometry , Manufacturing , Vibration , Rotors , Excitation , Design , Blades

Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part II: An Efficient Approach for Stochastic Studies

Juan Manuel Gallardo, Óscar Pérez Escobar

J. Eng. Gas Turbines Power. June 2025, 147(6): 061004. doi: https://doi.org/10.1115/1.4066538

Abstract

View articletitled, Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part II: An Efficient Approach for Stochastic Studies

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Topics: Airfoils , Blades , Computational fluid dynamics , Electromagnetic scattering , Engines , Excitation , Flow (Dynamics) , Geometry , Manufacturing , Simulation

Modeling of Casing Containment in an Overspeeding Turbine Stage

Ibrahim Eryilmaz

J. Eng. Gas Turbines Power. June 2025, 147(6): 061005. doi: https://doi.org/10.1115/1.4066710

Abstract

View articletitled, Modeling of Casing Containment in an Overspeeding Turbine Stage

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Topics: Blades , Containment , Turbines , Failure , Fins

Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry

Joshua Bird, Patrick S. Keogh, Carl M. Sangan, Aaron A. Bowsher, Peter F. Crudgington, James A. Scobie

J. Eng. Gas Turbines Power. June 2025, 147(6): 061006. doi: https://doi.org/10.1115/1.4066711

Abstract

View articletitled, Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry

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Topics: Damping , Excitation , Leakage , Pressure , Stiffness , Rotors , Pressure drop , Test facilities , Geometry

On a New Cyclic Symmetry Formulation Accounting for Boundaries Undergoing Nonlinear Forces

Samuel Quaegebeur, Fabrice Thouverez

J. Eng. Gas Turbines Power. June 2025, 147(6): 061007. doi: https://doi.org/10.1115/1.4066605

Abstract

View articletitled, On a New Cyclic Symmetry Formulation Accounting for Boundaries Undergoing Nonlinear Forces

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Topics: Blades , Displacement , Excitation , Finite element model , Friction , Standing waves , Frequency response , Accounting , Traveling waves , Shapes

V-Spline Design for Enhanced Performance in Turbine Blade Internal Cooling

Symus Say, Adamya Singh Dhaker, Wai Tuck Chow

J. Eng. Gas Turbines Power. June 2025, 147(6): 061008. doi: https://doi.org/10.1115/1.4066828

Abstract

View articletitled, V-Spline Design for Enhanced Performance in Turbine Blade Internal Cooling

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Topics: Cooling , Creep , Design , Fatigue , Flow (Dynamics) , Fluids , Heat transfer , Splines , Temperature , Turbine blades

Field Performance Testing and Test Codes for Gas Compressors

Klaus Brun, Rainer Kurz

J. Eng. Gas Turbines Power. June 2025, 147(6): 061009. doi: https://doi.org/10.1115/1.4066823

Abstract

View articletitled, Field Performance Testing and Test Codes for Gas Compressors

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Topics: Compressors , Flow (Dynamics) , Pressure , Testing performance , Uncertainty , Gas compressors , Temperature , Errors

Fatigue Failure of Steam Turbine Disks—A Centenary Tribute to Wilfred Campbell

Vamadevan Gowreesan, Kirill Grebinnyk, Mahesh Pemmasani Ramamoorthy

J. Eng. Gas Turbines Power. June 2025, 147(6): 061010. doi: https://doi.org/10.1115/1.4066601

Abstract

View articletitled, Fatigue Failure of Steam Turbine Disks—A Centenary Tribute to Wilfred Campbell

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Topics: Blades , Design , Disks , Steam turbines , Fracture (Materials) , Failure , Bladed disks

Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Thrust Bearings: Analysis and Experimental Validation

Homin Lim, Kyuman Kim, Keun Ryu

J. Eng. Gas Turbines Power. June 2025, 147(6): 061011. doi: https://doi.org/10.1115/1.4066780

Abstract

View articletitled, Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Thrust Bearings: Analysis and Experimental Validation

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Topics: Bearings , Film thickness , Hammers , Hydrostatics , Stress , Thrust bearings , Damping , Pressure

Laser Powder Bed Fusion Manufactured Hydrostatic Journal Bearings for Turbomachinery: Design and Measurements of Static Load Testing With Air, Water, and Liquid Nitrogen

Chaeyeon Baek, Hyunsung Jung, Junwon Heo, Kyuman Kim, Keun Ryu

J. Eng. Gas Turbines Power. June 2025, 147(6): 061012. doi: https://doi.org/10.1115/1.4066781

Abstract

View articletitled, Laser Powder Bed Fusion Manufactured Hydrostatic Journal Bearings for Turbomachinery: Design and Measurements of Static Load Testing With Air, Water, and Liquid Nitrogen

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Topics: Bearings , Journal bearings , Nitrogen , Stress , Water , Hydrostatics , Flow (Dynamics) , Manufacturing , Fluids , Design

Interplay Between Unburned Emissions and NO_x Emissions From a Dual Swirl Hydrogen Air Injector

Hervé Magnes, Martin Vilespy, Laurent Selle, Thierry Poinsot, Thierry Schuller

J. Eng. Gas Turbines Power. June 2025, 147(6): 061013. doi: https://doi.org/10.1115/1.4066717

Abstracts

View articletitled, Interplay Between Unburned Emissions and NO<sub>x</sub> Emissions From a Dual Swirl Hydrogen Air Injector

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Topics: Combustion , Ejectors , Emissions , Flames , Hydrogen , Nitrogen oxides , Flow (Dynamics)

Experimental Investigations on Carbon Segmented Seals With Smooth and Pocketed Pads

Pascal Jolly, Mihai Arghir, Hidetoshi Kasahara, Wataru Kimura

J. Eng. Gas Turbines Power. June 2025, 147(6): 061014. doi: https://doi.org/10.1115/1.4066788

Abstract

View articletitled, Experimental Investigations on Carbon Segmented Seals With Smooth and Pocketed Pads

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Topics: Friction , Leakage , Pressure , Rotors , Shorelines , Torque , Carbon

The Role of the Working Fluid and Nonideal Thermodynamic Effects on Performance of Gas-Lubricated Bearings

Wessel de Waart, Matteo Pini

J. Eng. Gas Turbines Power. June 2025, 147(6): 061015. doi: https://doi.org/10.1115/1.4066822

Abstract

View articletitled, The Role of the Working Fluid and Nonideal Thermodynamic Effects on Performance of Gas-Lubricated Bearings

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Topics: Bearings , Bulk modulus , Fluids , Stress , Compressibility , Pressure , Density , Flow (Dynamics) , Rotors , Gas bearings

Design and Simulation of eVTOL Aircraft Thermal Management System

Sangkeun Kang, Chana Anna Saias, Ioannis Roumeliotis, Olivier Broca

J. Eng. Gas Turbines Power. June 2025, 147(6): 061016. doi: https://doi.org/10.1115/1.4066820

Abstract

View articletitled, Design and Simulation of eVTOL Aircraft Thermal Management System

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Topics: Cooling , Design , Thermal management

Multimodal Shunt Damping of Monolithic Bladed Drums Using Multiple Digital Vibration Absorbers

Jennifer Dietrich, Ghislain Raze, Xavier Charles, Gaëtan Kerschen

J. Eng. Gas Turbines Power. June 2025, 147(6): 061017. doi: https://doi.org/10.1115/1.4066994

Abstract

View articletitled, Multimodal Shunt Damping of Monolithic Bladed Drums Using Multiple Digital Vibration Absorbers

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Topics: Circuits , Damping , Vibration absorbers , Blades , Vibration , Resonance

Experimental Study on Liquid Jet Trajectory in Cross Flow of Swirling Air at Elevated Pressure Condition

Deepak Kumar, Tushar Sikroria, Abhijit Kushari

J. Eng. Gas Turbines Power. June 2025, 147(6): 061018. doi: https://doi.org/10.1115/1.4067017

Abstract

View articletitled, Experimental Study on Liquid Jet Trajectory in Cross Flow of Swirling Air at Elevated Pressure Condition

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Topics: Flow (Dynamics) , Momentum , Pressure , Sprays , Swirling flow , Trajectories (Physics) , Gas turbines

Investigation of Onboard Power Generation Method Using Waste Energy at Altitude Conditions

Sang-Guk Kang, Aaron J. Pope, Erik S. Schroen, Jonathan M. Mattson, Kenneth S. Kim, Kyle D. Hepp, Kurt M. Kruger, Chol-Bum M. Kweon, Joseph A. Gibson, Rik D. Meininger, Marshall R. Musser

J. Eng. Gas Turbines Power. June 2025, 147(6): 061019. doi: https://doi.org/10.1115/1.4066995

Abstracts

View articletitled, Investigation of Onboard Power Generation Method Using Waste Energy at Altitude Conditions

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Topics: Energy generation , Engines , Seas , Turbochargers , Exhaust systems , Response surface methodology , Electric power generation

Techno-Economic Comparative Assessment of High-Temperature Heat Pump Architectures for Industrial Pumped Thermal Energy Storage

Silvia Trevisan, Bjarke Buchbjerg, Arne Höeg, Rafael Guedez

J. Eng. Gas Turbines Power. June 2025, 147(6): 061020. doi: https://doi.org/10.1115/1.4066989

Abstract

View articletitled, Techno-Economic Comparative Assessment of High-Temperature Heat Pump Architectures for Industrial Pumped Thermal Energy Storage

Supplementary data

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Topics: Boilers , Economics , Heat pumps , High temperature , Stress , Temperature , Thermal loads , Thermal energy , Heat , Modeling

Flashback Prevention in a Hydrogen-Fueled Reheat Combustor by Water Injection Optimized With Global Sensitivity Analysis

Pablo Rouco Pousada, Nguyen Anh Khoa Doan, Konduri Aditya, Michael Düsing, Andrea Ciani, Ivan Langella

J. Eng. Gas Turbines Power. June 2025, 147(6): 061021. doi: https://doi.org/10.1115/1.4066895

Abstracts

View articletitled, Flashback Prevention in a Hydrogen-Fueled Reheat Combustor by Water Injection Optimized With Global Sensitivity Analysis

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Topics: Combustion , Combustion chambers , Design , Flames , Ignition , Nitrogen oxides , Pressure , Sensitivity analysis , Sprays , Temperature

Effects of the Geometric Uncertainties of Bladed Disks Through the Analytical Derivatives of the Finite Element Matrices

Abdelhakim Bouras, Luigi Carassale

J. Eng. Gas Turbines Power. June 2025, 147(6): 061022. doi: https://doi.org/10.1115/1.4066894

Abstracts

View articletitled, Effects of the Geometric Uncertainties of Bladed Disks Through the Analytical Derivatives of the Finite Element Matrices

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Topics: Bladed disks , Blades , Finite element analysis , Geometry , Stiffness , Uncertainty , Sensitivity analysis , Manufacturing

The Effect of Additive “Depositional” Reprofiling of Compressor Blade Leading Edges on Engine Performance

Drew Mullaney, Merren Jones, Nicholas Bojdo, Stephen Covey-Crump, Alison Pawley

J. Eng. Gas Turbines Power. June 2025, 147(6): 061023. doi: https://doi.org/10.1115/1.4066924

Abstract

View articletitled, The Effect of Additive “Depositional” Reprofiling of Compressor Blade Leading Edges on Engine Performance

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Topics: Engines , Surface roughness

The Impact of Pad Elasticity on Frequency-Dependent Linear Dynamic Coefficients of Tilting-Pad Journal Bearings

Daniel Vetter, Philipp Zemella, Thomas Hagemann, Hubert Schwarze

J. Eng. Gas Turbines Power. June 2025, 147(6): 061024. doi: https://doi.org/10.1115/1.4066893

Abstract

View articletitled, The Impact of Pad Elasticity on Frequency-Dependent Linear Dynamic Coefficients of Tilting-Pad Journal Bearings

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Topics: Bearings , Stiffness , Stress , Damping , Elasticity

Numerical Modeling of a Primary Heat Exchanger in sCO₂ Power Cycles for Thermal Energy Storage Systems

Alexandre Guille, Malini Bangalore Mohankumar, Sebastian Unger, Uwe Hampel

J. Eng. Gas Turbines Power. June 2025, 147(6): 061025. doi: https://doi.org/10.1115/1.4066892

Abstract

View articletitled, Numerical Modeling of a Primary Heat Exchanger in sCO<sub>2</sub> Power Cycles for Thermal Energy Storage Systems

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Topics: Computational fluid dynamics , Flow (Dynamics) , Fluids , Heat exchangers , Heat transfer , Optimization , Pressure , Pressure drop , Printed circuit heat exchangers , Pumps

Research Papers

Validation of a Methodology to Assess the Flutter Limit-Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part I: Mach Number Effects

Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part II: Rotational Speed Effects

Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part I: Characterization of the Geometric Scatter and Its Effect on Forced Response

Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part II: An Efficient Approach for Stochastic Studies

Modeling of Casing Containment in an Overspeeding Turbine Stage

Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry

On a New Cyclic Symmetry Formulation Accounting for Boundaries Undergoing Nonlinear Forces

V-Spline Design for Enhanced Performance in Turbine Blade Internal Cooling

Field Performance Testing and Test Codes for Gas Compressors

Fatigue Failure of Steam Turbine Disks—A Centenary Tribute to Wilfred Campbell

Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Thrust Bearings: Analysis and Experimental Validation

Laser Powder Bed Fusion Manufactured Hydrostatic Journal Bearings for Turbomachinery: Design and Measurements of Static Load Testing With Air, Water, and Liquid Nitrogen

Interplay Between Unburned Emissions and NO_x Emissions From a Dual Swirl Hydrogen Air Injector

Experimental Investigations on Carbon Segmented Seals With Smooth and Pocketed Pads

The Role of the Working Fluid and Nonideal Thermodynamic Effects on Performance of Gas-Lubricated Bearings

Design and Simulation of eVTOL Aircraft Thermal Management System

Multimodal Shunt Damping of Monolithic Bladed Drums Using Multiple Digital Vibration Absorbers

Experimental Study on Liquid Jet Trajectory in Cross Flow of Swirling Air at Elevated Pressure Condition

Investigation of Onboard Power Generation Method Using Waste Energy at Altitude Conditions

Techno-Economic Comparative Assessment of High-Temperature Heat Pump Architectures for Industrial Pumped Thermal Energy Storage

Flashback Prevention in a Hydrogen-Fueled Reheat Combustor by Water Injection Optimized With Global Sensitivity Analysis

Effects of the Geometric Uncertainties of Bladed Disks Through the Analytical Derivatives of the Finite Element Matrices

The Effect of Additive “Depositional” Reprofiling of Compressor Blade Leading Edges on Engine Performance

The Impact of Pad Elasticity on Frequency-Dependent Linear Dynamic Coefficients of Tilting-Pad Journal Bearings

Numerical Modeling of a Primary Heat Exchanger in sCO₂ Power Cycles for Thermal Energy Storage Systems

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