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Journal Articles

Analysis of Turbomachinery Averaging Techniques

Christian Frey, Graham Ashcroft, Michael Müller, Jens Wellner

J. Turbomach. May 2023, 145(5): 051006.

Paper No: TURBO-22-1197

DOI: https://doi.org/10.1115/1.4056057

Published Online: November 25, 2022

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Topics: Entropy, Flow (Dynamics), Pressure, Turbines, Turbomachinery, Computational fluid dynamics, Simulation

Proceedings Papers

Analysis of Turbomachinery Averaging Techniques

Christian Frey, Graham Ashcroft, Michael Müller, Jens Wellner

Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A039, June 13–17, 2022

Paper No: GT2022-82959

DOI: https://doi.org/10.1115/GT2022-82959

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Topics: Turbomachinery, Entropy, Turbines, Inflow, Acoustics, Engineering simulation, Film cooling, Simulation, Unsteady flow, Vorticity

Proceedings Papers

Efficient Forced Response Analysis for Asymmetric Vane Spacing

Benedict Geihe, Christian Frey, Graham Ashcroft

Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A022, June 13–17, 2022

Paper No: GT2022-82983

DOI: https://doi.org/10.1115/GT2022-82983

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Topics: Blades, Engineering simulation, Engines, Excitation, Fluctuations (Physics), Fourier transforms, Inflow, Rotors, Simulation, Turbines

Journal Articles

Statistical Error Estimation Methods for Engineering-Relevant Quantities From Scale-Resolving Simulations

Michael Bergmann, Christian Morsbach, Graham Ashcroft, Edmund Kügeler

J. Turbomach. March 2022, 144(3): 031005.

Paper No: TURBO-21-1038

DOI: https://doi.org/10.1115/1.4052402

Published Online: October 1, 2021

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Topics: Blades, Errors, Pressure, Signals, Simulation, Transients (Dynamics), Flow (Dynamics), Turbulence, Wakes

Journal Articles

A New Harmonic Balance Approach Using Multidimensional Time

Laura Junge, Christian Frey, Graham Ashcroft, Edmund Kügeler

J. Eng. Gas Turbines Power. August 2021, 143(8): 081007.

Paper No: GTP-20-1505

DOI: https://doi.org/10.1115/1.4049698

Published Online: March 31, 2021

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Topics: Blades, Flow (Dynamics), Fourier transforms, Pressure, Simulation, Wakes, Unsteady flow, Flutter (Aerodynamics), Inflow

Proceedings Papers

A New Harmonic Balance Approach Using Multidimensional Time

Laura Junge, Christian Frey, Graham Ashcroft, Edmund Kügeler

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A031, September 21–25, 2020

Paper No: GT2020-16224

DOI: https://doi.org/10.1115/GT2020-16224

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Topics: Aeroelasticity, Blades, Computer simulation, Engineering simulation, Errors, Excitation, Flow (Dynamics), Flutter (Aerodynamics), Fourier transforms, Inflow

Journal Articles

Investigation of the Impact of Unsteady Turbulence Effects on the Aeroelastic Analysis of a Low-Pressure Turbine Rotor Blade

Jan Philipp Heners, Damian M. Vogt, Christian Frey, Graham Ashcroft

J. Turbomach. October 2019, 141(10): 100801.

Paper No: TURBO-18-1307

DOI: https://doi.org/10.1115/1.4043950

Published Online: September 30, 2019

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Topics: Blades, Filters, Pressure, Rotors, Simulation, Turbulence, Flow (Dynamics)

Proceedings Papers

Comparison of Linear and Nonlinear Frequency Domain Methods for Flutter Analysis

Hans-Peter Kersken, Graham Ashcroft, Christian Frey, Nina Wolfrum, Oliver Pütz

Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A016, June 11–15, 2018

Paper No: GT2018-75626

DOI: https://doi.org/10.1115/GT2018-75626

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Topics: Flutter (Aerodynamics), Blades, Turbomachinery, Algorithms, Gas turbines, Jet engines, Pressure, Stability, Turbines

Proceedings Papers

On the Simulation of Unsteady Turbulence and Transition Effects in a Multistage Low Pressure Turbine: Part I — Verification and Validation

Graham Ashcroft, Christian Frey, Hans-Peter Kersken, Edmund Kügeler, Nina Wolfrum

Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A042, June 11–15, 2018

Paper No: GT2018-76756

DOI: https://doi.org/10.1115/GT2018-76756

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Topics: Pressure, Simulation, Turbine components, Turbulence, Boundary-value problems, Turbines, Airfoils, Computational fluid dynamics, Flow (Dynamics), Unsteady flow

Proceedings Papers

On the Development of Harmonic Balance Methods for Multiple Fundamental Frequencies

Laura Junge, Graham Ashcroft, Hans-Peter Kersken, Christian Frey

Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A012, June 11–15, 2018

Paper No: GT2018-75495

DOI: https://doi.org/10.1115/GT2018-75495

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Topics: Aerodynamic flow, Blades, Computer simulation, Flow (Dynamics), Fourier transforms, Modeling, Signals, Turbomachinery, Unsteady flow

Proceedings Papers

On the Application of a Harmonic Balance Method With a Volume Source Cooling Model to the Simulation of a Film-Cooled Turbine Stage

Kai Becker, Graham Ashcroft, Anton Weber, Stefan Rochhausen, Jose Rodriguez, Gregor Schmid

Proc. ASME. GT2016, Volume 2D: Turbomachinery, V02DT44A022, June 13–17, 2016

Paper No: GT2016-57199

DOI: https://doi.org/10.1115/GT2016-57199

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Topics: Cooling, Simulation, Turbines, Flow (Dynamics), Unsteady flow, Blades, Computer simulation, Errors, Heat transfer, High pressure (Physics)

Proceedings Papers

On the Extension of a Harmonic Balance Method for the Simulation of Compressor Casing Treatments

Christian Voigt, Graham Ashcroft

Proc. ASME. GT2016, Volume 2C: Turbomachinery, V02CT39A035, June 13–17, 2016

Paper No: GT2016-56990

DOI: https://doi.org/10.1115/GT2016-56990

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Topics: Compressors, Simulation, Flow (Dynamics), Algorithms, Blades, Ducts, Entropy, Interpolation, Numerical analysis, Particulate matter

Proceedings Papers

Simulations of Unsteady Blade Row Interactions Using Linear and Non-Linear Frequency Domain Methods

Christian Frey, Graham Ashcroft, Hans-Peter Kersken

Proc. ASME. GT2015, Volume 2B: Turbomachinery, V02BT39A037, June 15–19, 2015

Paper No: GT2015-43453

DOI: https://doi.org/10.1115/GT2015-43453

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Topics: Blades, Simulation, Turbomachinery, Flow (Dynamics), Unsteady flow, Acoustics, Computational fluid dynamics, Rotors, Stators, Wheels

Proceedings Papers

On the Application of Frequency-Domain Methods to Multistage Turbomachinery

Laura Junge, Graham Ashcroft, Peter Jeschke, Christian Frey

Proc. ASME. GT2015, Volume 2B: Turbomachinery, V02BT39A027, June 15–19, 2015

Paper No: GT2015-42936

DOI: https://doi.org/10.1115/GT2015-42936

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Topics: Turbomachinery, Blades, Simulation, Compressors, Electromagnetic scattering, Modeling, Radiation scattering, Scattering (Physics), Unsteady flow, Aerodynamic flow

Proceedings Papers

Time-Domain Implementation of Higher-Order Non-Reflecting Boundary Conditions for Turbomachinery Applications

Stefan Henninger, Peter Jeschke, Graham Ashcroft, Edmund Kügeler

Proc. ASME. GT2015, Volume 2B: Turbomachinery, V02BT39A016, June 15–19, 2015

Paper No: GT2015-42362

DOI: https://doi.org/10.1115/GT2015-42362

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Topics: Boundary-value problems, Turbomachinery, Blades, Acoustics, Flutter (Aerodynamics), Laplace transforms, Reflection, Approximation, Bessel functions, Contamination

Proceedings Papers

Comparison of Non-Linear and Linearized CFD Analysis of the Stator-Rotor Interaction of a Compressor Stage

Harald Schoenenborn, Graham Ashcroft

Proc. ASME. GT2014, Volume 7B: Structures and Dynamics, V07BT35A002, June 16–20, 2014

Paper No: GT2014-25256

DOI: https://doi.org/10.1115/GT2014-25256

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Topics: Compressors, Computational fluid dynamics, Rotors, Stators, Blades, Inlet guide vanes, Mode shapes, Acoustics, Design, Pressure

Proceedings Papers

Nonreflecting Boundary Conditions for Aeroelastic Analysis in Time and Frequency Domain 3D RANS Solvers

Hans-Peter Kersken, Graham Ashcroft, Christian Frey, Nina Wolfrum, Detlef Korte

Proc. ASME. GT2014, Volume 2B: Turbomachinery, V02BT39A010, June 16–20, 2014

Paper No: GT2014-25499

DOI: https://doi.org/10.1115/GT2014-25499

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Topics: Boundary-value problems, Reynolds-averaged Navier–Stokes equations, Approximation, Flow (Dynamics), Computation, Eigenfunctions, Engineering simulation, Flutter (Aerodynamics), Fourier transforms, Navier-Stokes equations

Proceedings Papers

A Harmonic Balance Technique for Multistage Turbomachinery Applications

Christian Frey, Graham Ashcroft, Hans-Peter Kersken, Christian Voigt

Proc. ASME. GT2014, Volume 2B: Turbomachinery, V02BT39A005, June 16–20, 2014

Paper No: GT2014-25230

DOI: https://doi.org/10.1115/GT2014-25230

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Topics: Turbomachinery, Blades, Simulation, Flow (Dynamics), Compressors, Noise (Sound), Vibration

Journal Articles

Advanced Numerical Methods for the Prediction of Tonal Noise in Turbomachinery—Part I: Implicit Runge–Kutta Schemes

Graham Ashcroft, Christian Frey, Kathrin Heitkamp, Christian Weckmüller

J. Turbomach. February 2014, 136(2): 021002.

Paper No: TURBO-12-1164

DOI: https://doi.org/10.1115/1.4023904

Published Online: September 26, 2013

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Topics: Blades, Errors, Flow (Dynamics), Noise (Sound), Numerical analysis, Pressure, Rotors, Simulation, Stability, Stators

Journal Articles

Advanced Numerical Methods for the Prediction of Tonal Noise in Turbomachinery—Part II: Time-Linearized Methods

Christian Frey, Graham Ashcroft, Hans-Peter Kersken, Christian Weckmüller

J. Turbomach. February 2014, 136(2): 021003.

Paper No: TURBO-12-1163

DOI: https://doi.org/10.1115/1.4024649

Published Online: September 26, 2013

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Topics: Blades, Boundary-value problems, Flow (Dynamics), Noise (Sound), Pressure, Rotors, Stators, Turbomachinery, Waves, Simulation

Journal citation

NARROW

Analysis of Turbomachinery Averaging Techniques

Analysis of Turbomachinery Averaging Techniques

Efficient Forced Response Analysis for Asymmetric Vane Spacing

Statistical Error Estimation Methods for Engineering-Relevant Quantities From Scale-Resolving Simulations

A New Harmonic Balance Approach Using Multidimensional Time

A New Harmonic Balance Approach Using Multidimensional Time

Investigation of the Impact of Unsteady Turbulence Effects on the Aeroelastic Analysis of a Low-Pressure Turbine Rotor Blade

Comparison of Linear and Nonlinear Frequency Domain Methods for Flutter Analysis

On the Simulation of Unsteady Turbulence and Transition Effects in a Multistage Low Pressure Turbine: Part I — Verification and Validation

On the Development of Harmonic Balance Methods for Multiple Fundamental Frequencies

On the Application of a Harmonic Balance Method With a Volume Source Cooling Model to the Simulation of a Film-Cooled Turbine Stage

On the Extension of a Harmonic Balance Method for the Simulation of Compressor Casing Treatments

Simulations of Unsteady Blade Row Interactions Using Linear and Non-Linear Frequency Domain Methods

On the Application of Frequency-Domain Methods to Multistage Turbomachinery

Time-Domain Implementation of Higher-Order Non-Reflecting Boundary Conditions for Turbomachinery Applications

Comparison of Non-Linear and Linearized CFD Analysis of the Stator-Rotor Interaction of a Compressor Stage

Nonreflecting Boundary Conditions for Aeroelastic Analysis in Time and Frequency Domain 3D RANS Solvers

A Harmonic Balance Technique for Multistage Turbomachinery Applications

Advanced Numerical Methods for the Prediction of Tonal Noise in Turbomachinery—Part I: Implicit Runge–Kutta Schemes

Advanced Numerical Methods for the Prediction of Tonal Noise in Turbomachinery—Part II: Time-Linearized Methods

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