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Journal Articles

Particulate Deposition Effects on Internal Swirl Cooling of Turbine Blades

Xing Yang, Zihan Hao, Florian Seibold, Zhenping Feng, Phillip Ligrani, Bernhard Weigand
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2023, 145(5): 051020.
Paper No: GTP-22-1501
DOI: https://doi.org/10.1115/1.4056264
Published Online: January 10, 2023
View Article titled, Particulate Deposition Effects on Internal Swirl Cooling of Turbine Blades
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Topics: Flow (Dynamics), Particulate matter, Cooling, Simulation, Swirling flow
Journal Articles

Aero Engine Concepts Beyond 2030: Part 3—Experimental Demonstration of Technological Feasibility

Oliver Schmitz, Sascha Kaiser, Hermann Klingels, Petra Kufner, Martin Obermüller, Martin Henke, Jan Zanger, Felix Grimm, Simon Schuldt, Anna Marcellan, Daniele Cirigliano, Peter Kutne, Alex Heron-Himmel, Stephan Schneider, Judith Richter, Bernhard Weigand, Anne Göhler-Stroh, Arne Seitz, Mirko Hornung
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2021, 143(2): 021003.
Paper No: GTP-20-1442
DOI: https://doi.org/10.1115/1.4048994
Published Online: January 13, 2021
View Article titled, Aero Engine Concepts Beyond 2030: Part 3—Experimental Demonstration of Technological Feasibility
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Topics: Aircraft, Aircraft engines, Combustion, Condensation, Cycles, Design, Engines, Gas turbines, Pistons, Steam
Proceedings Papers

Aero Engine Concepts Beyond 2030: Part 3 — Experimental Demonstration of Technological Feasibility

Oliver Schmitz, Sascha Kaiser, Hermann Klingels, Petra Kufner, Martin Obermüller, Martin Henke, Jan Zanger, Felix Grimm, Simon Schuldt, Anna Marcellan, Daniele Cirigliano, Peter Kutne, Alex Heron-Himmel, Stephan Schneider, Judith Richter, Bernhard Weigand, Anne Göhler-Stroh, Arne Seitz, Mirko Hornung
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T06A019, September 21–25, 2020
Paper No: GT2020-15397
DOI: https://doi.org/10.1115/GT2020-15397
View Paper titled, Aero Engine Concepts Beyond 2030: Part 3 — Experimental Demonstration of Technological Feasibility
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Topics: Aircraft engines, Aviation, Composite materials, Cycles, Engines, Pistons, Steam
Proceedings Papers

Numerical Investigation of an In-Wall Cooling Design Approach for Improved Thermal Efficiency of Additively Manufactured Gas Turbine Ring Segments

Thomas Wimmer, York Mick, Bernhard Weigand
Proc. ASME. GT2020, Volume 7A: Heat Transfer, V07AT15A009, September 21–25, 2020
Paper No: GT2020-14511
DOI: https://doi.org/10.1115/GT2020-14511
View Paper titled, Numerical Investigation of an In-Wall Cooling Design Approach for Improved Thermal Efficiency of Additively Manufactured Gas Turbine Ring Segments
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Topics: Additive manufacturing, Cooling, Design, Gas turbines, Thermal efficiency, Heat, Temperature, Wall thickness, Combustion, Industrial gases
Proceedings Papers

Electrokinetic Transport of Power Law Fluid Through a Micro-Channel With Hydrodynamic Slippage

Ainul Haque, Ameeya Kumar Nayak, Bernhard Weigand
Proc. ASME. AJKFluids2019, Volume 4: Fluid Measurement and Instrumentation; Micro and Nano Fluid Dynamics, V004T06A013, July 28–August 1, 2019
Paper No: AJKFluids2019-4848
DOI: https://doi.org/10.1115/AJKFluids2019-4848
View Paper titled, Electrokinetic Transport of Power Law Fluid Through a Micro-Channel With Hydrodynamic Slippage
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Topics: Electrokinetics, Entropy, Fluids, Heating, Joules, Microchannels, Non-Newtonian fluids
Proceedings Papers

Experimental and Numerical Investigation on an Additively Manufactured Gas Turbine Ring Segment With an In-Wall Cooling Scheme

Thomas Wimmer, Tobias Ruehmer, York Mick, Lieke Wang, Bernhard Weigand
Proc. ASME. GT2019, Volume 5B: Heat Transfer, V05BT21A001, June 17–21, 2019
Paper No: GT2019-90227
DOI: https://doi.org/10.1115/GT2019-90227
View Paper titled, Experimental and Numerical Investigation on an Additively Manufactured Gas Turbine Ring Segment With an In-Wall Cooling Scheme
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Topics: Additive manufacturing, Cooling, Gas turbines, Engines, Boundary-value problems, Flow (Dynamics), Friction, Instrumentation, Manufacturing, Performance evaluation
Journal Articles

Heat Transfer and Turbulent Flow Structure in Channels With Miniature V-Shaped Rib-Dimple Hybrid Structures on One Wall

Peng Zhang, Yu Rao, Yanlin Li, Bernhard Weigand
Journal: Journal of Heat Transfer
Article Type: Research-Article
J. Heat Transfer. July 2019, 141(7): 071903.
Paper No: HT-19-1003
DOI: https://doi.org/10.1115/1.4043675
Published Online: May 17, 2019
View Article titled, Heat Transfer and Turbulent Flow Structure in Channels With Miniature V-Shaped Rib-Dimple Hybrid Structures on One Wall
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Topics: Flow (Dynamics), Heat transfer, Turbulence, Reynolds number, Pressure
Journal Articles

Experimental and Numerical Heat Transfer Investigation of an Impinging Jet Array on a Target Plate Roughened by Cubic Micro Pin Fins

Robin Brakmann, Lingling Chen, Bernhard Weigand, Michael Crawford
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. November 2016, 138(11): 111010.
Paper No: TURBO-16-1087
DOI: https://doi.org/10.1115/1.4033670
Published Online: June 28, 2016
View Article titled, Experimental and Numerical Heat Transfer Investigation of an Impinging Jet Array on a Target Plate Roughened by Cubic Micro Pin Fins
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Topics: Computational fluid dynamics, Fins, Flow (Dynamics), Heat transfer, Reynolds number, Jets, Boundary-value problems, Temperature, Turbulence
Journal Articles

Aerothermal Investigation of a Single Row Divergent Narrow Impingement Channel by Particle Image Velocimetry and Liquid Crystal Thermography

Alexandros Terzis, Christoforos Skourides, Peter Ott, Jens von Wolfersdorf, Bernhard Weigand
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. May 2016, 138(5): 051003.
Paper No: TURBO-15-1141
DOI: https://doi.org/10.1115/1.4032328
Published Online: January 20, 2016
View Article titled, Aerothermal Investigation of a Single Row Divergent Narrow Impingement Channel by Particle Image Velocimetry and Liquid Crystal Thermography
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Topics: Flow (Dynamics), Heat transfer, Jets, Liquid crystals, Particulate matter, Thermography, Reynolds number
Proceedings Papers

Experimental and Numerical Heat Transfer Investigation of an Impinging Jet Array on a Target Plate Roughened by Cubic Micro Pin Fins

Robin Brakmann, Lingling Chen, Bernhard Weigand, Michael Crawford
Proc. ASME. GT2015, Volume 5A: Heat Transfer, V05AT11A002, June 15–19, 2015
Paper No: GT2015-42149
DOI: https://doi.org/10.1115/GT2015-42149
View Paper titled, Experimental and Numerical Heat Transfer Investigation of an Impinging Jet Array on a Target Plate Roughened by Cubic Micro Pin Fins
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Topics: Fins, Heat transfer, Computer simulation, Pressure, Temperature, Transients (Dynamics), Boundary-value problems, Computational fluid dynamics, Computer software, Fluid mechanics
Proceedings Papers

Second Law Analysis of Thermodynamic Cycles for Aero Engines

Eva Kerber, Bernhard Weigand, Florian Schmidt, Stephan Staudacher
Proc. ASME. GT2015, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A022, June 15–19, 2015
Paper No: GT2015-43295
DOI: https://doi.org/10.1115/GT2015-43295
View Paper titled, Second Law Analysis of Thermodynamic Cycles for Aero Engines
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Topics: Aircraft engines, Thermodynamic cycles, Cycles, Entropy, Compression, Heat, Heat transfer, Exergy, Gas turbines, Thermal efficiency
Journal Articles

Experimental and Numerical Study of Heat Transfer and Flow Friction in Channels With Dimples of Different Shapes

Yu Rao, Yan Feng, Bo Li, Bernhard Weigand
Journal: Journal of Heat Transfer
Article Type: Research-Article
J. Heat Transfer. March 2015, 137(3): 031901.
Paper No: HT-14-1353
DOI: https://doi.org/10.1115/1.4029036
Published Online: March 1, 2015
View Article titled, Experimental and Numerical Study of Heat Transfer and Flow Friction in Channels With Dimples of Different Shapes
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Topics: Flow (Dynamics), Friction, Heat transfer, Shapes, Turbulence, Reynolds number
Proceedings Papers

The GT24/26 Low Pressure Turbine

Ian K. Jennions, Thomas Sommer, Bernhard Weigand, Manfred Aigner
Proc. ASME. GT1998, Volume 1: Turbomachinery, V001T01A008, June 2–5, 1998
Paper No: 98-GT-029
DOI: https://doi.org/10.1115/98-GT-029
View Paper titled, The GT24/26 Low Pressure Turbine
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Topics: Pressure, Turbines, Design, Flow (Dynamics), Combustion chambers, Airfoils, Blades, Compressors, Cooling, Databases
Proceedings Papers

Impingement Cooling Experiments With Flat Plate and Pin Plate Target Surfaces

Rainer Hoecker, Bruce V. Johnson, Josef Hausladen, Matthias Rothbrust, Bernhard Weigand
Proc. ASME. GT1999, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A070, June 7–10, 1999
Paper No: 99-GT-252
DOI: https://doi.org/10.1115/99-GT-252
View Paper titled, Impingement Cooling Experiments With Flat Plate and Pin Plate Target Surfaces
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Topics: Flat plates, Impingement cooling, Copper, Heat transfer, Heat transfer coefficients, Pins (Engineering), Reynolds number, Coolants, Engines, Fins
Proceedings Papers

Detailed Heat Transfer Distributions of Narrow Impingement Channels With Varying Jet Diameter

Alexandros Terzis, Magali Cochet, Jens von Wolfersdorf, Bernhard Weigand, Peter Ott
Proc. ASME. GT2014, Volume 5A: Heat Transfer, V05AT12A028, June 16–20, 2014
Paper No: GT2014-25910
DOI: https://doi.org/10.1115/GT2014-25910
View Paper titled, Detailed Heat Transfer Distributions of Narrow Impingement Channels With Varying Jet Diameter
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Topics: Heat transfer, Airfoils, Coolants, Cooling, Design, Discharge coefficient, Geometry, Heat transfer coefficients, Jets, Liquid crystals
Proceedings Papers

Turbine Endwall Contouring for the Reduction of Endwall Heat Transfer Using the Ice Formation Method Along With Computational Fluid Dynamics

Sven Winkler, Kristian Haase, Janosch Brucker, Bernhard Weigand
Proc. ASME. GT2014, Volume 5B: Heat Transfer, V05BT14A006, June 16–20, 2014
Paper No: GT2014-25655
DOI: https://doi.org/10.1115/GT2014-25655
View Paper titled, Turbine Endwall Contouring for the Reduction of Endwall Heat Transfer Using the Ice Formation Method Along With Computational Fluid Dynamics
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Topics: Computational fluid dynamics, Heat transfer, Ice, Turbines, Flow (Dynamics), Temperature, Airfoils, Design, Engineering simulation, Gas turbines
Journal Articles

Effect of Varying Jet Diameter on the Heat Transfer Distributions of Narrow Impingement Channels

Alexandros Terzis, Peter Ott, Magali Cochet, Jens von Wolfersdorf, Bernhard Weigand
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. February 2015, 137(2): 021004.
Paper No: TURBO-14-1155
DOI: https://doi.org/10.1115/1.4028294
Published Online: September 10, 2014
View Article titled, Effect of Varying Jet Diameter on the Heat Transfer Distributions of Narrow Impingement Channels
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Topics: Heat transfer, Jets, Flow (Dynamics), Heat transfer coefficients, Liquid crystals
Journal Articles

Detailed Heat Transfer Distributions of Narrow Impingement Channels for Cast-In Turbine Airfoils

Alexandros Terzis, Peter Ott, Jens von Wolfersdorf, Bernhard Weigand, Magali Cochet
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. September 2014, 136(9): 091011.
Paper No: TURBO-13-1228
DOI: https://doi.org/10.1115/1.4027679
Published Online: June 3, 2014
View Article titled, Detailed Heat Transfer Distributions of Narrow Impingement Channels for Cast-In Turbine Airfoils
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Topics: Heat transfer, Heat transfer coefficients, Flow (Dynamics), Liquid crystals, Turbines, Airfoils
Journal Articles

Hole Staggering Effect on the Cooling Performance of Narrow Impingement Channels Using the Transient Liquid Crystal Technique

Alexandros Terzis, Guillaume Wagner, Jens von Wolfersdorf, Peter Ott, Bernhard Weigand
Journal: Journal of Heat Transfer
Article Type: Research-Article
J. Heat Transfer. July 2014, 136(7): 071701.
Paper No: HT-12-1477
DOI: https://doi.org/10.1115/1.4027250
Published Online: April 8, 2014
View Article titled, Hole Staggering Effect on the Cooling Performance of Narrow Impingement Channels Using the Transient Liquid Crystal Technique
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Topics: Cooling, Flow (Dynamics), Heat transfer, Heat transfer coefficients, Jets, Liquid crystals, Temperature, Transients (Dynamics), Turbines, Reynolds number
Proceedings Papers

Three Components- and Tomographic-PIV Measurements of a Cyclone Cooling Flow in a Swirl Tube

Christoph Biegger, Bernhard Weigand, Alice Cabitza
Proc. ASME. GT2013, Volume 3A: Heat Transfer, V03AT12A012, June 3–7, 2013
Paper No: GT2013-94424
DOI: https://doi.org/10.1115/GT2013-94424
View Paper titled, Three Components- and Tomographic-PIV Measurements of a Cyclone Cooling Flow in a Swirl Tube
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Topics: Cooling, Flow (Dynamics), Vortices, Particulate matter, Axial flow, Ducts, Heat transfer, Reynolds number, Statistical analysis, Turbine blades