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Journal Articles

DATA-ASSIMILATION OF TRANSITIONAL AND SEPARATED TURBOMACHINERY FLOWS WITH PHYSICS-INFORMED NEURAL NETWORKS

Open Access
Accepted Manuscript
Sean Hanrahan, Melissa Kozul, Richard Sandberg
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1059
https://doi.org/10.1115/1.4068396
Published Online: April 9, 2025
View Articletitled, DATA-ASSIMILATION OF TRANSITIONAL AND SEPARATED TURBOMACHINERY FLOWS WITH PHYSICS-INFORMED NEURAL NETWORKS
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Topics: Artificial neural networks, Flow (Dynamics), Physics, Turbochargers, Turbomachinery, Turbulence, Reynolds-averaged Navier–Stokes equations, Separation (Technology), Computational fluid dynamics, Pressure
Journal Articles

Accounting for Circumferential Flow Nonuniformity in a Multistage Axial Compressor

Open Access
Fangyuan Lou, Douglas R. Matthews, Nicholas J. Kormanik, III, Nicole L. Key
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2023, 145(7): 071016.
Paper No: TURBO-21-1151
https://doi.org/10.1115/1.4056933
Published Online: March 6, 2023
View Articletitled, Accounting for Circumferential Flow Nonuniformity in a Multistage Axial Compressor
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Topics: Compressors, Flow (Dynamics), Pressure, Stators, Approximation, Wakes, Annulus
Journal Articles

Reconstructing Compressor Non-Uniform Circumferential Flow Field From Spatially Undersampled Data—Part 1: Methodology and Sensitivity Analysis

Open Access
Fangyuan Lou, Nicole L. Key
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. August 2021, 143(8): 081002.
Paper No: TURBO-20-1349
https://doi.org/10.1115/1.4050433
Published Online: April 26, 2021
View Articletitled, Reconstructing Compressor Non-Uniform Circumferential Flow Field From Spatially Undersampled Data—Part 1: Methodology and Sensitivity Analysis
Open the PDF for Reconstructing Compressor Non-Uniform Circumferential Flow Field From Spatially Undersampled Data—Part 1: Methodology and Sensitivity Analysis in another window
Topics: Approximation, Compressors, Errors, Flow (Dynamics), Particle swarm optimization, Probes, Signals, Wavelets, Sensitivity analysis, Design
Journal Articles

Reconstructing Compressor Nonuniform Circumferential Flow Field From Spatially Undersampled Data—Part 2: Practical Application for Experiments

Open Access
Fangyuan Lou, Douglas R. Matthews, Nicholas J. Kormanik, III, Nicole L. Key
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. August 2021, 143(8): 081003.
Paper No: TURBO-20-1350
https://doi.org/10.1115/1.4050434
Published Online: April 26, 2021
View Articletitled, Reconstructing Compressor Nonuniform Circumferential Flow Field From Spatially Undersampled Data—Part 2: Practical Application for Experiments
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Topics: Approximation, Compressors, Diffusers, Flow (Dynamics), Pressure, Wavelets, Stators
Journal Articles

Reducing Instrumentation Errors Caused by Circumferential Flow-Field Variations in Multistage Axial Compressors

Available to Purchase
M. Chilla, G. Pullan, S. Gallimore
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2020, 142(9): 091006.
Paper No: TURBO-20-1033
https://doi.org/10.1115/1.4047610
Published Online: August 24, 2020
View Articletitled, Reducing Instrumentation Errors Caused by Circumferential Flow-Field Variations in Multistage Axial Compressors
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Topics: Compressors, Errors, Flow (Dynamics), Pressure, Probes, Signals, Stators, Temperature, Wakes, Computational fluid dynamics
Journal Articles

Analysis of the Thermomechanical Stresses in Double-Wall Effusion Cooled Systems

Open Access
Elsiddig Elmukashfi, Alexander V. Murray, Peter T. Ireland, Alan C. F. Cocks
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2020, 142(5): 051002.
Paper No: TURBO-19-1181
https://doi.org/10.1115/1.4046268
Published Online: April 8, 2020
View Articletitled, Analysis of the Thermomechanical Stresses in Double-Wall Effusion Cooled Systems
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Topics: Heat transfer coefficients, Skin, Stress, Temperature, Reynolds number, Thermomechanics, Cooling systems, Approximation, Boundary-value problems, Computational fluid dynamics
Journal Articles

Spatial Flow-Field Approximation Using Few Thermodynamic Measurements—Part I: Formulation and Area Averaging

Available to Purchase
Pranay Seshadri, Duncan Simpson, George Thorne, Andrew Duncan, Geoffrey Parks
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2020, 142(2): 021006.
Paper No: TURBO-19-1155
https://doi.org/10.1115/1.4045781
Published Online: January 24, 2020
View Articletitled, Spatial Flow-Field Approximation Using Few Thermodynamic Measurements—Part I: Formulation and Area Averaging
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Topics: Approximation, Engines, Flow (Dynamics), Temperature, Testing, Modeling, Errors, Temperature measurement
Journal Articles

Machine-Learnt Turbulence Closures for Low-Pressure Turbines With Unsteady Inflow Conditions

Available to Purchase
H. D. Akolekar, R. D. Sandberg, N. Hutchins, V. Michelassi, G. Laskowski
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2019, 141(10): 101009.
Paper No: TURBO-18-1305
https://doi.org/10.1115/1.4043907
Published Online: September 30, 2019
View Articletitled, Machine-Learnt Turbulence Closures for Low-Pressure Turbines With Unsteady Inflow Conditions
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Topics: Errors, Flow (Dynamics), Physics, Turbulence, Wakes, Inflow, Approximation, Locks (Waterways), Model development, Pressure
Journal Articles

Fast Conjugate Heat Transfer Simulation of Long Transient Flexible Operations Using Adaptive Time Stepping

Available to Purchase
R. Maffulli, L. He, P. Stein, G. Marinescu
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2018, 140(9): 091005.
Paper No: TURBO-18-1151
https://doi.org/10.1115/1.4040997
Published Online: August 28, 2018
View Articletitled, Fast Conjugate Heat Transfer Simulation of Long Transient Flexible Operations Using Adaptive Time Stepping
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Topics: Annulus, Errors, Flow (Dynamics), Fluids, Heat transfer, Modeling, Natural convection, Simulation, Temperature, Transients (Dynamics)
Journal Articles

The Effect of Real Gas Approximations on S-CO 2 Compressor Design

Available to Purchase
Jekyoung Lee, Seong Kuk Cho, Jeong Ik Lee
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. May 2018, 140(5): 051007.
Paper No: TURBO-17-1208
https://doi.org/10.1115/1.4038879
Published Online: April 6, 2018
View Articletitled, The Effect of Real Gas Approximations on S-CO 2 Compressor Design
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Topics: Approximation, Compressors, Design, Supercritical carbon dioxide, Errors
Journal Articles

Autonomous Uncertainty Quantification for Discontinuous Models Using Multivariate Padé Approximations

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Richard Ahlfeld, Francesco Montomoli, Mauro Carnevale, Simone Salvadori
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. April 2018, 140(4): 041004.
Paper No: TURBO-17-1062
https://doi.org/10.1115/1.4038826
Published Online: January 23, 2018
View Articletitled, Autonomous Uncertainty Quantification for Discontinuous Models Using Multivariate Padé Approximations
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Topics: Approximation, Computational fluid dynamics, Errors, Shock (Mechanics), Uncertainty quantification, Film cooling, Polynomials
Journal Articles

A Single Formulation for Uncertainty Propagation in Turbomachinery: SAMBA PC

Available to Purchase
Richard Ahlfeld, Francesco Montomoli
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. November 2017, 139(11): 111007.
Paper No: TURBO-16-1184
https://doi.org/10.1115/1.4037362
Published Online: August 23, 2017
View Articletitled, A Single Formulation for Uncertainty Propagation in Turbomachinery: SAMBA PC
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Topics: Algorithms, Approximation, Computational fluid dynamics, Diffusers, Errors, Fittings, Gas turbines, Manufacturing, Polynomials, Simulation
Journal Articles

Cooling Optimization Theory—Part I: Optimum Wall Temperature, Coolant Exit Temperature, and the Effect of Wall/Film Properties on Performance

Available to Purchase
Benjamin Kirollos, Thomas Povey
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. August 2016, 138(8): 081002.
Paper No: TURBO-15-1289
https://doi.org/10.1115/1.4032612
Published Online: March 15, 2016
View Articletitled, Cooling Optimization Theory—Part I: Optimum Wall Temperature, Coolant Exit Temperature, and the Effect of Wall/Film Properties on Performance
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Topics: Coolants, Cooling, Flow (Dynamics), Temperature, Wall temperature, Cooling systems, Approximation, Heat transfer
Journal Articles

The Low Reduced Frequency Limit of Vibrating Airfoils—Part I: Theoretical Analysis

Available to Purchase
Roque Corral, Almudena Vega
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. February 2016, 138(2): 021004.
Paper No: TURBO-15-1129
https://doi.org/10.1115/1.4031776
Published Online: November 3, 2015
View Articletitled, The Low Reduced Frequency Limit of Vibrating Airfoils—Part I: Theoretical Analysis
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Topics: Airfoils, Approximation, Cycles, Pressure
Journal Articles

Establishing a Methodology for Resolving Convective Heat Transfer From Complex Geometries

Available to Purchase
Jason K. Ostanek, J. Prausa, A. Van Suetendael, Karen A. Thole
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2010, 132(3): 031014.
https://doi.org/10.1115/1.3144989
Published Online: April 2, 2010
View Articletitled, Establishing a Methodology for Resolving Convective Heat Transfer From Complex Geometries
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Topics: Convection, Heat transfer, Temperature, Reynolds number, Design, Cooling, Heat losses, Approximation, Turbulence, Thermocouples
Journal Articles

Effect of Upstream Rotor Vortical Disturbances on the Time-Averaged Performance of Axial Compressor Stators: Part 1—Framework of Technical Approach and Wake–Stator Blade Interactions

Available to Purchase
T. V. Valkov, C. S. Tan
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 1999, 121(3): 377–386.
https://doi.org/10.1115/1.2841330
Published Online: July 1, 1999
View Articletitled, Effect of Upstream Rotor Vortical Disturbances on the Time-Averaged Performance of Axial Compressor Stators: Part 1—Framework of Technical Approach and Wake–Stator Blade Interactions
Open the PDF for Effect of Upstream Rotor Vortical Disturbances on the Time-Averaged Performance of Axial Compressor Stators: Part 1—Framework of Technical Approach and Wake–Stator Blade Interactions in another window
Topics: Blades, Compressors, Rotors, Stators, Wakes, Wake turbulence, Flow (Dynamics), Vortices, Leakage, Approximation
Journal Articles

Effect of Upstream Rotor Vortical Disturbances on the Time-Averaged Performance of Axial Compressor Stators: Part 2—Rotor Tip Vortex/Streamwise Vortex–Stator Blade Interactions

Available to Purchase
T. V. Valkov, C. S. Tan
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 1999, 121(3): 387–397.
https://doi.org/10.1115/1.2841331
Published Online: July 1, 1999
View Articletitled, Effect of Upstream Rotor Vortical Disturbances on the Time-Averaged Performance of Axial Compressor Stators: Part 2—Rotor Tip Vortex/Streamwise Vortex–Stator Blade Interactions
Open the PDF for Effect of Upstream Rotor Vortical Disturbances on the Time-Averaged Performance of Axial Compressor Stators: Part 2—Rotor Tip Vortex/Streamwise Vortex–Stator Blade Interactions in another window
Topics: Blades, Compressors, Rotors, Stators, Vortices, Wake turbulence, Wakes, Flow (Dynamics), Leakage, Approximation
Journal Articles

Navier–Stokes and Potential Calculations of Axial Spacing Effect on Vortical and Potential Disturbances and Gust Response in an Axial Compressor

Available to Purchase
M.-H. Chung, A. M. Wo
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 1997, 119(3): 472–481.
https://doi.org/10.1115/1.2841146
Published Online: July 1, 1997
View Articletitled, Navier–Stokes and Potential Calculations of Axial Spacing Effect on Vortical and Potential Disturbances and Gust Response in an Axial Compressor
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Topics: Compressors, Stators, Rotors, Blades, Chords (Trusses), Approximation, Design
Journal Articles

Evaluation of Flow Field Approximations for Transonic Compressor Stages

Available to Purchase
D. J. Dorney, O. P. Sharma
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 1997, 119(3): 445–451.
https://doi.org/10.1115/1.2841143
Published Online: July 1, 1997
View Articletitled, Evaluation of Flow Field Approximations for Transonic Compressor Stages
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Topics: Approximation, Compressors, Flow (Dynamics), Blades, Computers, Gas turbines, Rotors, Stators
Journal Articles

Education Committee Best Paper of 1995 Award: Methods of Classical Mechanics Applied to Turbulence Stresses in a Tip Leakage Vortex

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J. G. Moore, S. A. Schorn, J. Moore
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 1996, 118(4): 622–629.
https://doi.org/10.1115/1.2840917
Published Online: October 1, 1996
View Articletitled, Education Committee Best Paper of 1995 Award: Methods of Classical Mechanics Applied to Turbulence Stresses in a Tip Leakage Vortex
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Topics: Classical mechanics, Education, Leakage, Stress, Turbulence, Vortices, Stress tensors, Approximation, Cascades (Fluid dynamics), Tensors