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Proceedings Papers

A Discretization Approach for Conjugate Heat Transfer and Application to Turbomachinery Flows

Elias L. Papanicolaou, Dietmar Giebert, Rainer Koch, Achmed Schulz
Proc. ASME. IMECE98, Heat Transfer: Volume 3 — Application of Heat Transfer in Equipment, Systems, and Education, 349-362, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0670
https://doi.org/10.1115/IMECE1998-0670
View Paper titled, A Discretization Approach for Conjugate Heat Transfer and Application to Turbomachinery Flows
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Topics: Flow (Dynamics), Heat transfer, Turbomachinery, Fluids, Temperature, Turbulence, Algorithms, Boundary-value problems, Computation, Computers
Journal Articles

Film Cooling Measurements for a Laidback Fan-Shaped Hole: Effect of Coolant Crossflow on Cooling Effectiveness and Heat Transfer

Marc Fraas, Tobias Glasenapp, Achmed Schulz, Hans-Jörg Bauer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. April 2019, 141(4): 041006.
Paper No: TURBO-18-1251
https://doi.org/10.1115/1.4041655
Published Online: January 21, 2019
View Article titled, Film Cooling Measurements for a Laidback Fan-Shaped Hole: Effect of Coolant Crossflow on Cooling Effectiveness and Heat Transfer
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Topics: Coolants, Cooling, Film cooling, Flow (Dynamics), Heat transfer, Reynolds number
Proceedings Papers

Influence of a Non-Axisymmetric Endwall on the Flow Field in a Turbine Passage: High-Resolution LDV

Jonas Schmid, Achmed Schulz, Hans-Jörg Bauer
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT41A001, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75061
https://doi.org/10.1115/GT2018-75061
View Paper titled, Influence of a Non-Axisymmetric Endwall on the Flow Field in a Turbine Passage: High-Resolution LDV
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Topics: Flow (Dynamics), Resolution (Optics), Turbines, Cascades (Fluid dynamics), Flow visualization, Laser Doppler anemometry, Suction, Turbulence, Vortices
Proceedings Papers

Film Cooling Measurements for a Laidback Fan-Shaped Hole: Effect of Coolant Crossflow on Cooling Effectiveness and Heat Transfer

Marc Fraas, Tobias Glasenapp, Achmed Schulz, Hans-Jörg Bauer
Proc. ASME. GT2018, Volume 5C: Heat Transfer, V05CT19A007, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75389
https://doi.org/10.1115/GT2018-75389
View Paper titled, Film Cooling Measurements for a Laidback Fan-Shaped Hole: Effect of Coolant Crossflow on Cooling Effectiveness and Heat Transfer
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Topics: Coolants, Cooling, Film cooling, Heat transfer, Flow (Dynamics), Inflow, Reynolds number, Blades, Density, Diffusers
Proceedings Papers

Comparative Experimental Investigation of Leading Edge Cooling Concepts of Turbine Rotor Blades

Maximilian Elfner, Achmed Schulz, Hans-Jörg Bauer, Knut Lehmann
Proc. ASME. GT2018, Volume 5A: Heat Transfer, V05AT16A002, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75360
https://doi.org/10.1115/GT2018-75360
View Paper titled, Comparative Experimental Investigation of Leading Edge Cooling Concepts of Turbine Rotor Blades
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Topics: Blades, Cooling, Rotors, Turbines, Design, Resolution (Optics), Accuracy and precision, Evaluation methods, Film cooling, Flow (Dynamics)
Proceedings Papers

Assessment of Real Turbine Blade Roughness Parameters for the Design of a Film Cooling Test Rig

Tobias Glasenapp, Franz Puetz, Achmed Schulz, Hans-Jörg Bauer
Proc. ASME. GT2017, Volume 5A: Heat Transfer, V05AT13A001, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63088
https://doi.org/10.1115/GT2017-63088
View Paper titled, Assessment of Real Turbine Blade Roughness Parameters for the Design of a Film Cooling Test Rig
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Topics: Design, Film cooling, Surface roughness, Turbine blades, Turbines, Fluid dynamics, Pressure, Suction, Aircraft engines, Airfoils
Proceedings Papers

A Novel Test Rig for Assessing Advanced Rotor Blade Cooling Concepts, Measurement Technique and First Results

Maximilian Elfner, Achmed Schulz, Hans-Jörg Bauer, Knut Lehmann
Proc. ASME. GT2017, Volume 5A: Heat Transfer, V05AT16A015, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64539
https://doi.org/10.1115/GT2017-64539
View Paper titled, A Novel Test Rig for Assessing Advanced Rotor Blade Cooling Concepts, Measurement Technique and First Results
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Topics: Blades, Cooling, Rotors, Resolution (Optics), Accuracy and precision, Algorithms, Calibration, Design, Emissivity, Geometry
Proceedings Papers

Introducing a New Test Rig for Film Cooling Measurements With Realistic Hole Inflow Conditions

Marc Fraas, Tobias Glasenapp, Achmed Schulz, Hans-Jörg Bauer
Proc. ASME. GT2017, Volume 5C: Heat Transfer, V05CT19A007, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63585
https://doi.org/10.1115/GT2017-63585
View Paper titled, Introducing a New Test Rig for Film Cooling Measurements With Realistic Hole Inflow Conditions
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Topics: Film cooling, Inflow, Flow (Dynamics), Cooling, Gas flow, Coolants, Density, Engines, Geometry, Heat transfer coefficients
Proceedings Papers

Effusion Cooled Combustor Liner Tiles With Modern Cooling Concepts: A Comparative Experimental Study

Thomas Jackowski, Achmed Schulz, Hans-Jörg Bauer, Miklós Gerendás, Thomas Behrendt
Proc. ASME. GT2016, Volume 5B: Heat Transfer, V05BT17A007, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56598
https://doi.org/10.1115/GT2016-56598
View Paper titled, Effusion Cooled Combustor Liner Tiles With Modern Cooling Concepts: A Comparative Experimental Study
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Topics: Combustion chambers, Cooling, Tiles, Pressure, Combustion, Coolants, Flow (Dynamics), Geometry, Temperature, Additive manufacturing
Journal Articles

A New Test Facility to Investigate Film Cooling on a Nonaxisymmetric Contoured Turbine Endwall—Part II: Heat Transfer and Film Cooling Measurements

Johannes Kneer, Franz Puetz, Achmed Schulz, Hans-Jörg Bauer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. July 2016, 138(7): 071004.
Paper No: TURBO-15-1266
https://doi.org/10.1115/1.4032364
Published Online: February 17, 2016
View Article titled, A New Test Facility to Investigate Film Cooling on a Nonaxisymmetric Contoured Turbine Endwall—Part II: Heat Transfer and Film Cooling Measurements
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Topics: Film cooling, Heat transfer, Temperature, Turbines, Coolants, Test facilities
Proceedings Papers

A New Test Facility to Investigate Film Cooling on a Non-Axisymmetric Contoured Turbine Endwall: Part I — Introduction and Aerodynamic Measurements

Franz Puetz, Johannes Kneer, Achmed Schulz, Hans-Joerg Bauer
Proc. ASME. GT2015, Volume 2A: Turbomachinery, V02AT38A005, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42272
https://doi.org/10.1115/GT2015-42272
View Paper titled, A New Test Facility to Investigate Film Cooling on a Non-Axisymmetric Contoured Turbine Endwall: Part I — Introduction and Aerodynamic Measurements
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Topics: Film cooling, Test facilities, Turbines, Flow (Dynamics), Heat transfer, Emissions, Pressure, Aircraft engines, Blades, Cascades (Fluid dynamics)
Proceedings Papers

A New Test Facility to Investigate Film Cooling on a Non-Axisymmetric Contoured Turbine Endwall: Part II — Heat Transfer and Film Cooling Measurements

Johannes Kneer, Franz Puetz, Achmed Schulz, Hans-Jörg Bauer
Proc. ASME. GT2015, Volume 5B: Heat Transfer, V05BT12A015, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42524
https://doi.org/10.1115/GT2015-42524
View Paper titled, A New Test Facility to Investigate Film Cooling on a Non-Axisymmetric Contoured Turbine Endwall: Part II — Heat Transfer and Film Cooling Measurements
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Topics: Film cooling, Heat transfer, Test facilities, Turbines, Coolants, Cascades (Fluid dynamics), Cooling, Data acquisition, Density, Freezing
Proceedings Papers

Effect of Internal Coolant Crossflow Orientation on the Discharge Coefficient of Shaped Film Cooling Holes

Michael Gritsch, Christian Saumweber, Achmed Schulz, Sigmar Wittig, Edwin Sharp
Proc. ASME. GT1999, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A014, June 7–10, 1999
Publisher: American Society of Mechanical Engineers
Paper No: 99-GT-040
https://doi.org/10.1115/99-GT-040
View Paper titled, Effect of Internal Coolant Crossflow Orientation on the Discharge Coefficient of Shaped Film Cooling Holes
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Topics: Coolants, Discharge coefficient, Film cooling, Flow (Dynamics), Mach number, Diffusers, Engines, Geometry, Pressure
Proceedings Papers

The Superposition Approach to Local Heat Transfer Coefficients in High Density Ratio Film Cooling Flows

Michael Gritsch, Stefan Baldauf, Moritz Martiny, Achmed Schulz, Sigmar Wittig
Proc. ASME. GT1999, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A048, June 7–10, 1999
Publisher: American Society of Mechanical Engineers
Paper No: 99-GT-168
https://doi.org/10.1115/99-GT-168
View Paper titled, The Superposition Approach to Local Heat Transfer Coefficients in High Density Ratio Film Cooling Flows
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Topics: Density, Film cooling, Flow (Dynamics), Heat transfer coefficients, Coolants, Temperature, Boundary layers, Differential equations
Proceedings Papers

Effect of Crossflows on the Discharge Coefficient of Film Cooling Holes With Varying Angles of Inclination and Orientation

Michael Gritsch, Achmed Schulz, Sigmar Wittig
Proc. ASME. GT2001, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A020, June 4–7, 2001
Publisher: American Society of Mechanical Engineers
Paper No: 2001-GT-0134
https://doi.org/10.1115/2001-GT-0134
View Paper titled, Effect of Crossflows on the Discharge Coefficient of Film Cooling Holes With Varying Angles of Inclination and Orientation
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Topics: Discharge coefficient, Film cooling, Cooling, Engines, Geometry, Mach number, Pressure
Proceedings Papers

Prediction of High-Frequency Blade Vibration Amplitudes in a Radial Inflow Turbine With Nozzle Guide Vanes

Martin Schwitzke, Achmed Schulz, Hans-Jörg Bauer
Proc. ASME. GT2013, Volume 7B: Structures and Dynamics, V07BT33A007, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94761
https://doi.org/10.1115/GT2013-94761
View Paper titled, Prediction of High-Frequency Blade Vibration Amplitudes in a Radial Inflow Turbine With Nozzle Guide Vanes
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Topics: Blades, Inflow, Nozzle guide vanes, Turbines, Vibration, Damping, Excitation, Resonance, Boundary-value problems, Impellers
Journal Articles

Understanding the Twin Scroll Turbine: Flow Similarity

Nils Brinkert, Siegfried Sumser, Siegfried Weber, Klaus Fieweger, Achmed Schulz, Hans-Jörg Bauer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. March 2013, 135(2): 021039.
Paper No: TURBO-11-1204
https://doi.org/10.1115/1.4006607
Published Online: November 19, 2012
View Article titled, Understanding the Twin Scroll Turbine: Flow Similarity
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Topics: Flow (Dynamics), Turbines, Pressure, Temperature, Mach number
Journal Articles

Experimental and Numerical Investigation of Flow Field and Downstream Surface Temperatures of Cylindrical and Diffuser Shaped Film Cooling Holes 1

Tilman auf dem Kampe, Stefan Völker, Torsten Sämel, Christian Heneka, Helge Ladisch, Achmed Schulz, Hans-Jörg Bauer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. January 2013, 135(1): 011026.
Paper No: TURBO-11-1161
https://doi.org/10.1115/1.4006336
Published Online: October 30, 2012
View Article titled, Experimental and Numerical Investigation of Flow Field and Downstream Surface Temperatures of Cylindrical and Diffuser Shaped Film Cooling Holes 1
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Topics: Computational fluid dynamics, Coolants, Cooling, Diffusers, Film cooling, Flow (Dynamics), Temperature, Turbulence
Journal Articles

Effect of Geometry Variations on the Cooling Performance of Fan-Shaped Cooling Holes

Christian Saumweber, Achmed Schulz
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2012, 134(6): 061008.
https://doi.org/10.1115/1.4006290
Published Online: August 27, 2012
View Article titled, Effect of Geometry Variations on the Cooling Performance of Fan-Shaped Cooling Holes
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Topics: Coolants, Cooling, Cross-flow, Diffusers, Film cooling, Flow (Dynamics), Geometry, Mach number, Heat transfer coefficients, Discharge coefficient
Journal Articles

Free-Stream Effects on the Cooling Performance of Cylindrical and Fan-Shaped Cooling Holes

Christian Saumweber, Achmed Schulz
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2012, 134(6): 061007.
https://doi.org/10.1115/1.4006287
Published Online: August 27, 2012
View Article titled, Free-Stream Effects on the Cooling Performance of Cylindrical and Fan-Shaped Cooling Holes
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Topics: Coolants, Cooling, Diffusers, Film cooling, Mach number, Turbulence, Wakes, Flow (Dynamics), Pressure, Heat transfer coefficients