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Volume 147, Issue 8

August 2025

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ISSN 0742-4795

EISSN 1528-8919

In this Issue

Research Papers

Research Papers

Performance Optimization of an Axial Compressor Using a Novel Multifidelity Surrogate Model Based on Flow Field Extraction

Yitong Liu, Wuqi Gong, Ya Li, Yitian Wang

J. Eng. Gas Turbines Power. August 2025, 147(8): 081001. doi: https://doi.org/10.1115/1.4067220

Abstracts

View articletitled, Performance Optimization of an Axial Compressor Using a Novel Multifidelity Surrogate Model Based on Flow Field Extraction

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Topics: Compressors , Flow (Dynamics) , Optimization , Rotors , Construction , Hafnium

Experimental and Numerical Study on NO_x Emissions Characteristics in a Coaxial Staged Combustor

Jihao Sun, Ningbo Zhao, Yajun Li, Xu Cheng, Hongtao Zheng

J. Eng. Gas Turbines Power. August 2025, 147(8): 081002. doi: https://doi.org/10.1115/1.4067219

Abstract

View articletitled, Experimental and Numerical Study on NO<sub>x</sub> Emissions Characteristics in a Coaxial Staged Combustor

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Topics: Combustion chambers , Emissions , Fuels , Nitrogen oxides , Temperature , Flames , Combustion

Novel Alloying Strategy to Improve Brazing Properties on Nickel-Based Superalloys for Aircrafts Turbine Application

Dirk Wilhelm Reker, Roman Sowa, Caspar Schwalbe, Frank Seidel, Kai Moehwald, Martin Nicolaus, Steffen Wackenrohr, Wolfgang Tillmann

J. Eng. Gas Turbines Power. August 2025, 147(8): 081003. doi: https://doi.org/10.1115/1.4067248

Abstract

View articletitled, Novel Alloying Strategy to Improve Brazing Properties on Nickel-Based Superalloys for Aircrafts Turbine Application

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Topics: Alloys , Brazing , Nickel , Superalloys

Blade Excitation Alleviation of a Nozzleless Radial Turbine by Casing Treatment Based on Reduced-Order Model

Mingyang Yang, Zhaokai Lu, Wataru Sato, Teppei Kuwata

J. Eng. Gas Turbines Power. August 2025, 147(8): 081004. doi: https://doi.org/10.1115/1.4067064

Abstract

View articletitled, Blade Excitation Alleviation of a Nozzleless Radial Turbine by Casing Treatment Based on Reduced-Order Model

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Topics: Blades , Excitation , Pressure , Turbines , Vibration , Rotors , Numerical analysis

Effect of Piston Ring Grooves on the Radial and Tangential Forces of a Squeeze Film Damper

Emanuele Giampaolo, Mihai Arghir, Hugo Festjens

J. Eng. Gas Turbines Power. August 2025, 147(8): 081005. doi: https://doi.org/10.1115/1.4067162

Abstract

View articletitled, Effect of Piston Ring Grooves on the Radial and Tangential Forces of a Squeeze Film Damper

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Topics: Clearances (Engineering) , Computational fluid dynamics , Dampers , Flow (Dynamics) , Piston rings , Pressure , Damping , Cavitation , Thin films , Rotors

Design and Testing of a Compact, Reverse Brayton Cycle, Air (R729) Cooling Machine

Sönke Teichel, Renan Emre Karaefe, Ahmet Çokşen

J. Eng. Gas Turbines Power. August 2025, 147(8): 081006. doi: https://doi.org/10.1115/1.4067063

Abstract

View articletitled, Design and Testing of a Compact, Reverse Brayton Cycle, Air (R729) Cooling Machine

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Topics: Compressors , Cooling , Design , Machinery , Temperature , Turbines , Pressure , Brayton cycle , Testing

Study of Tandem Rotor Dual Wake Interaction With Downstream Stator Under Unsteady Numerical Approach

Ajey Singh, Chetan Mistry

J. Eng. Gas Turbines Power. August 2025, 147(8): 081007. doi: https://doi.org/10.1115/1.4067094

Abstract

View articletitled, Study of Tandem Rotor Dual Wake Interaction With Downstream Stator Under Unsteady Numerical Approach

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Topics: Blades , Flow (Dynamics) , Pressure , Rotors , Stators , Wakes , Design

Analysis of the Flow-Field Distortions Induced by Pneumatic Pressure Probes in Test Bench Experiments on Centrifugal Compressors: Are We Testing Right?

Alberto Baroni, Luca Romani, Francesco Balduzzi, Lorenzo Toni, Angelo Grimaldi, Elisabetta Belardini, Davide Biliotti, Alessandro Bianchini, Giovanni Ferrara

J. Eng. Gas Turbines Power. August 2025, 147(8): 081008. doi: https://doi.org/10.1115/1.4066991

Abstracts

View articletitled, Analysis of the Flow-Field Distortions Induced by Pneumatic Pressure Probes in Test Bench Experiments on Centrifugal Compressors: Are We Testing Right?

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Topics: Diffusers , Flow (Dynamics) , Pressure , Probes , Compressors

Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds

Robin Reifsnyder, Randall Mathison, Kiran D'Souza

J. Eng. Gas Turbines Power. August 2025, 147(8): 081009. doi: https://doi.org/10.1115/1.4067104

Abstract

View articletitled, Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds

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Topics: Blades , Temperature , Stress , Engines , Frequency response

Experiments on Structurally Mistuned UHBR Open-Test-Case Fan ECL5/CATANA

Christoph Brandstetter, Alexandra P. Schneider, Anne-Lise Fiquet, Benoit Paoletti, Xavier Ottavy

J. Eng. Gas Turbines Power. August 2025, 147(8): 081010. doi: https://doi.org/10.1115/1.4067221

Abstract

View articletitled, Experiments on Structurally Mistuned UHBR Open-Test-Case Fan ECL5/CATANA

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Topics: Blades , Vibration , Clearances (Engineering) , Rotors , Manufacturing , Flow (Dynamics)

Metallurgical Investigation and Failure Analysis in GTD-111 Stage 2 Buckets From an Industrial F-Class Gas Turbine

Alex Bridges, John Shingledecker, Yongqing Wang

J. Eng. Gas Turbines Power. August 2025, 147(8): 081011. doi: https://doi.org/10.1115/1.4067216

Abstract

View articletitled, Metallurgical Investigation and Failure Analysis in GTD-111 Stage 2 Buckets From an Industrial F-Class Gas Turbine

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Topics: Airfoils , Blades , Casting , Creep , Damage , Design , Fracture (Materials) , Fracture (Process) , Gas turbines , Grain boundaries

Experimental Study of the Real Gas Effects of CO₂ on the Aerodynamic Performance Characteristics of a 1.5-Stage Axial Compressor

Jeongseek Kang, Alexander Vorobiev, Joshua D. Cameron, Scott C. Morris, Mark G. Turner, Kyle Sedlacko, Jason D. Miller, Timothy J. Held

J. Eng. Gas Turbines Power. August 2025, 147(8): 081012. doi: https://doi.org/10.1115/1.4067267

Abstract

View articletitled, Experimental Study of the Real Gas Effects of CO<sub>2</sub> on the Aerodynamic Performance Characteristics of a 1.5-Stage Axial Compressor

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Topics: Carbon dioxide , Compressors , Pressure , Temperature , Reynolds number , Flow (Dynamics) , Speed of sound

Review of the Impact of Hydrogen-Containing Fuels on Gas Turbine Hot-Section Materials

Jacqueline O'Connor, David R. Noble, Alex Bridges, John Shingledecker, John Scheibel, Michael Gagliano

J. Eng. Gas Turbines Power. August 2025, 147(8): 081013. doi: https://doi.org/10.1115/1.4067335

Abstracts

View articletitled, Review of the Impact of Hydrogen-Containing Fuels on Gas Turbine Hot-Section Materials

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Topics: Fuels , Gas turbines , Hydrogen , Temperature , High temperature , Alloys , Flames , Combustion , Heat transfer , Water

In-Cylinder Imaging and Emissions Measurements of Cold-Start Split Injection Strategies

Luis G. Gutierrez, Margaret S. Wooldridge, Benjamin R. Petersen, Steven T. Wooldridge

J. Eng. Gas Turbines Power. August 2025, 147(8): 081014. doi: https://doi.org/10.1115/1.4067602

Abstract

View articletitled, In-Cylinder Imaging and Emissions Measurements of Cold-Start Split Injection Strategies

Supplementary data

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Topics: Combustion , Cylinders , Emissions , Engines , Fuels , Imaging , Particulate matter , Sprays , Pistons , Metals

Image-Based Flashback Detection in a Hydrogen-Fired Gas Turbine Using a Convolutional Autoencoder

Paul Porath, Vikas Yadav, Lukasz Panek, Abdulla Ghani

J. Eng. Gas Turbines Power. August 2025, 147(8): 081015. doi: https://doi.org/10.1115/1.4067298

Abstract

View articletitled, Image-Based Flashback Detection in a Hydrogen-Fired Gas Turbine Using a Convolutional Autoencoder

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Topics: Combustion , Computer-aided engineering , Engines , Flames , Gas turbines , Hydrogen , Dimensions , Errors , Combustion chambers , Fuels

Operation of a Compression Ignition Engine at Idling Load Under Simulated Cold Weather Conditions

Shouvik Dev, Hongsheng Guo, Brian Liko, Simon Lafrance

J. Eng. Gas Turbines Power. August 2025, 147(8): 081016. doi: https://doi.org/10.1115/1.4067586

Abstract

View articletitled, Operation of a Compression Ignition Engine at Idling Load Under Simulated Cold Weather Conditions

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Topics: Exhaust gas recirculation , Stress , Temperature , Nitrogen oxides , Emissions , Engines , Coolants , Exhaust systems , Lubricants

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Research Papers

Performance Optimization of an Axial Compressor Using a Novel Multifidelity Surrogate Model Based on Flow Field Extraction

Experimental and Numerical Study on NO_x Emissions Characteristics in a Coaxial Staged Combustor

Novel Alloying Strategy to Improve Brazing Properties on Nickel-Based Superalloys for Aircrafts Turbine Application

Blade Excitation Alleviation of a Nozzleless Radial Turbine by Casing Treatment Based on Reduced-Order Model

Effect of Piston Ring Grooves on the Radial and Tangential Forces of a Squeeze Film Damper

Design and Testing of a Compact, Reverse Brayton Cycle, Air (R729) Cooling Machine

Study of Tandem Rotor Dual Wake Interaction With Downstream Stator Under Unsteady Numerical Approach

Analysis of the Flow-Field Distortions Induced by Pneumatic Pressure Probes in Test Bench Experiments on Centrifugal Compressors: Are We Testing Right?

Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds

Experiments on Structurally Mistuned UHBR Open-Test-Case Fan ECL5/CATANA

Metallurgical Investigation and Failure Analysis in GTD-111 Stage 2 Buckets From an Industrial F-Class Gas Turbine

Experimental Study of the Real Gas Effects of CO₂ on the Aerodynamic Performance Characteristics of a 1.5-Stage Axial Compressor

Review of the Impact of Hydrogen-Containing Fuels on Gas Turbine Hot-Section Materials

In-Cylinder Imaging and Emissions Measurements of Cold-Start Split Injection Strategies

Image-Based Flashback Detection in a Hydrogen-Fired Gas Turbine Using a Convolutional Autoencoder

Operation of a Compression Ignition Engine at Idling Load Under Simulated Cold Weather Conditions

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