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Alexander Wiedermann
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Proceedings Papers

Mesh Refinement and Inlet Turbulence Intensity in the Numerical Evaluation of Cooling Effectiveness: A Systematic Study on an Industrial Gas Turbine

Federico Lo Presti, Benjamin Winhart, Pascal Post, Francesca di Mare, Alexander Wiedermann, Johannes Greving, Robert Krewinkel
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A010, June 13–17, 2022
Paper No: GT2022-80958
DOI: https://doi.org/10.1115/GT2022-80958
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Topics: Cooling, Industrial gases, Turbines, Turbulence
Proceedings Papers

Simulation of the Overall Transient Operation of Gas Turbines

Djordje Petkovic, Milan B. Banjac, Srdjan Milic, Teodora Madzar, Milan V. Petrovic, Alexander Wiedermann
Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T16A007, June 13–17, 2022
Paper No: GT2022-82250
DOI: https://doi.org/10.1115/GT2022-82250
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Topics: Dynamic models, Gas turbines, Simulation, Transients (Dynamics)
Proceedings Papers

New Method for Cycle Performance Prediction Based on Detailed Compressor and Gas Turbine Flow Calculations

Milan V. Petrovic, Alexander Wiedermann, Milan B. Banjac, Srdjan Milic, Djordje Petkovic, Teodora Madzar
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A026, June 13–17, 2022
Paper No: GT2022-82229
DOI: https://doi.org/10.1115/GT2022-82229
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Topics: Compressors, Cycles, Flow (Dynamics), Gas turbines, Turbines, Cooling, Flow simulation, Temperature, Aerodynamics, Combustion
Journal Articles

Numerical Investigation of Unsteady Combustor Turbine Interaction for Flexible Power Generation

Federico Lo Presti, Marwick Sembritzky, Benjamin Winhart, Pascal Post, Francesca di Mare, Alexander Wiedermann, Johannes Greving, Robert Krewinkel
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. February 2022, 144(2): 021003.
Paper No: TURBO-21-1146
DOI: https://doi.org/10.1115/1.4052137
Published Online: September 27, 2021
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Topics: Boundary-value problems, Combustion chambers, Temperature, Turbines, Flow (Dynamics), Simulation, Fluctuations (Physics), Stress
Proceedings Papers

Numerical Investigation of Unsteady Combustor Turbine Interaction For Flexible Power Generation

Federico Lo Presti, Marwick Sembritzky, Benjamin Winhart, Pascal Post, Francesca di Mare, Alexander Wiedermann, Johannes Greving, Robert Krewinkel
Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A021, June 7–11, 2021
Paper No: GT2021-59329
DOI: https://doi.org/10.1115/GT2021-59329
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Topics: Combustion chambers, Energy generation, Stress, Turbines
Journal Articles

Erratum: “Secondary Flows, Endwall Effects, and Stall Detection in Axial Compressor Design” [ASME J. Turbomach. 2015, 137(5), p. 051004; DOI: 10.1115/1.4028648 ]

Milan Banjac, Milan V. Petrovic, Alexander Wiedermann
Journal: Journal of Turbomachinery
Article Type: Errata
J. Turbomach. July 2021, 143(7): 077001.
Paper No: TURBO-20-1313
DOI: https://doi.org/10.1115/1.4049916
Published Online: May 17, 2021
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Topics: Compressors, Design, Flow (Dynamics)
Journal Articles

Modeling the Transient Behavior of Gas Turbines

Djordje Petkovic, Milan Banjac, Srdjan Milic, Milan V. Petrovic, Alexander Wiedermann
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. August 2020, 142(8): 081005.
Paper No: TURBO-19-1227
DOI: https://doi.org/10.1115/1.4046451
Published Online: July 28, 2020
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Topics: Compressors, Flow (Dynamics), Fuels, Gas turbines, Stress, Transients (Dynamics), Turbines, Simulation, Temperature, Inlet guide vanes
Proceedings Papers

Modelling the Transient Behaviour of Gas Turbines

Djordje Petkovic, Milan Banjac, Srdjan Milic, Milan V. Petrovic, Alexander Wiedermann
Proc. ASME. GT2019, Volume 2A: Turbomachinery, V02AT45A014, June 17–21, 2019
Paper No: GT2019-91008
DOI: https://doi.org/10.1115/GT2019-91008
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Topics: Gas turbines, Modeling, Transients (Dynamics), Flow (Dynamics), Simulation, Stress, Boundary-value problems, Compressors, Differential equations, Dynamic models
Proceedings Papers

Through-Flow Modeling of Single- and Two-Shaft Gas Turbines at Wide Operating Range

Alexander Wiedermann, Milan V. Petrovic
Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A006, June 11–15, 2018
Paper No: GT2018-75394
DOI: https://doi.org/10.1115/GT2018-75394
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Topics: Flow (Dynamics), Gas turbines, Modeling, Turbines, Compressors, Cooling, Design, Bifurcation, Boundary layers, Combustion
Proceedings Papers

Part Load Behavior of the LP Part of an Industrial Gas Turbine

Milan V. Petrovic, Alexander Wiedermann, Srecko M. Nedeljkovic, Milan Banjac
Proc. ASME. GT2017, Volume 2A: Turbomachinery, V02AT40A033, June 26–30, 2017
Paper No: GT2017-64778
DOI: https://doi.org/10.1115/GT2017-64778
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Topics: Industrial gases, Stress, Turbines, Flow (Dynamics), Design, Compressors, Computational fluid dynamics, Cooling, Finite element analysis, Pressure
Proceedings Papers

Multistage Axial Compressor Flow Field Predictions Using CFD and Through-Flow Calculations

Milan Banjac, Milan V. Petrovic, Alexander Wiedermann
Proc. ASME. GT2016, Volume 2C: Turbomachinery, V02CT39A047, June 13–17, 2016
Paper No: GT2016-57632
DOI: https://doi.org/10.1115/GT2016-57632
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Topics: Compressors, Computational fluid dynamics, Flow (Dynamics), Blades, Design
Proceedings Papers

Fully Coupled Through-Flow Method for Industrial Gas Turbine Analysis

Milan V. Petrovic, Alexander Wiedermann
Proc. ASME. GT2015, Volume 2B: Turbomachinery, V02BT39A005, June 15–19, 2015
Paper No: GT2015-42111
DOI: https://doi.org/10.1115/GT2015-42111
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Topics: Flow (Dynamics), Industrial gases, Turbines, Compressors, Gas turbines, Cooling, Computation, Boundary layers, Combustion, Coolants
Journal Articles

Secondary Flows, Endwall Effects, and Stall Detection in Axial Compressor Design

Milan Banjac, Milan V. Petrovic, Alexander Wiedermann
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. May 2015, 137(5): 051004.
Paper No: TURBO-14-1179
DOI: https://doi.org/10.1115/1.4028648
Published Online: May 1, 2015
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Topics: Blades, Boundary layers, Clearances (Engineering), Compressors, Entropy, Flow (Dynamics), Pressure, Design, Suction
Proceedings Papers

Three-Dimensional Flowfield Calculation of High-Loaded Centrifugal Compressor Diffusers

Ingolf Teipel, Alexander Wiedermann
Proc. ASME. GT1986, Volume 1: Turbomachinery, V001T01A076, June 8–12, 1986
Paper No: 86-GT-187
DOI: https://doi.org/10.1115/86-GT-187
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Topics: Compressors, Diffusers, Blades, Geometry, Shapes
Proceedings Papers

Viscous Flow Field Calculations in High-Loaded Centrifugal Compressor Diffusers

Ingolf Teipel, Alexander Wiedermann
Proc. ASME. GT1990, Volume 1: Turbomachinery, V001T01A028, June 11–14, 1990
Paper No: 90-GT-077
DOI: https://doi.org/10.1115/90-GT-077
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Topics: Compressors, Diffusers, Viscous flow, Turbulence, Boundary layers, Approximation, Computation, Computers, Eddies (Fluid dynamics), Modeling
Proceedings Papers

An Efficient Workflow for Accurate Flutter Stability Analyses and Application to a State of the Art Compressor Rotor

Derek Micallef, Dirk Witteck, Alexander Wiedermann, Ronald Mailach
Proc. ASME. GT2014, Volume 7B: Structures and Dynamics, V07BT35A007, June 16–20, 2014
Paper No: GT2014-25646
DOI: https://doi.org/10.1115/GT2014-25646
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Topics: Compressors, Flutter (Aerodynamics), Rotors, Stability, Workflow, Blades, Design, Mode shapes, Boundary-value problems, Computer software
Proceedings Papers

Secondary Flows, Endwall Effects and Stall Detection in Axial Compressor Design

Milan Banjac, Milan V. Petrovic, Alexander Wiedermann
Proc. ASME. GT2014, Volume 2A: Turbomachinery, V02AT37A005, June 16–20, 2014
Paper No: GT2014-25115
DOI: https://doi.org/10.1115/GT2014-25115
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Topics: Compressors, Design, Flow (Dynamics), Boundary layers, Calibration, Clearances (Engineering), Surges
Journal Articles

A New Loss and Deviation Model for Axial Compressor Inlet Guide Vanes

Milan Banjac, Milan V. Petrovic, Alexander Wiedermann
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. July 2014, 136(7): 071011.
Paper No: TURBO-13-1217
DOI: https://doi.org/10.1115/1.4025956
Published Online: January 2, 2014
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Topics: Blades, Compressors, Flow (Dynamics), Inlet guide vanes, Cascades (Fluid dynamics), Airfoils, Computational fluid dynamics
Proceedings Papers

MAN’s New Gas Turbines for Mechanical Drive and Power Generation Applications

Emil Aschenbruck, Michele Cagna, Volker Langusch, Ulrich Orth, Andreas Spiegel, Alexander Wiedermann, Sven-Hendrik Wiers
Proc. ASME. GT2013, Volume 5B: Oil and Gas Applications; Steam Turbines, V05BT24A013, June 3–7, 2013
Paper No: GT2013-94897
DOI: https://doi.org/10.1115/GT2013-94897
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Topics: Energy generation, Gas turbines, Mechanical drives, Compressors, Design, Downtime, Engines, Stress, Turbines, Turbochargers
Proceedings Papers

Cross Flow Effects on Endwall Heat Transfer in Film-Cooled Turbine Nozzle Guide Vanes

Rebecca Reviol, Roman Franze, Martin Böhle, Kenichiro Takeishi, Alexander Wiedermann
Proc. ASME. GT2013, Volume 3B: Heat Transfer, V03BT13A035, June 3–7, 2013
Paper No: GT2013-94898
DOI: https://doi.org/10.1115/GT2013-94898
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Topics: Cross-flow, Heat transfer, Nozzle guide vanes, Turbines, Flow (Dynamics), Computational fluid dynamics, Film cooling, Airfoils, Symmetry (Physics), Turbulence