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Bernd Stoffel
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Journal Articles

Unsteady Cavitation at the Tongue of the Volute of a Centrifugal Pump

Rudolf Bachert, Bernd Stoffel, Matevž Dular
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. June 2010, 132(6): 061301.
https://doi.org/10.1115/1.4001570
Published Online: May 19, 2010
View Article titled, Unsteady Cavitation at the Tongue of the Volute of a Centrifugal Pump
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Topics: Blades, Cavitation, Flow (Dynamics), Impellers, Pumps, Centrifugal pumps
Proceedings Papers

Numerical Investigation on the Second Stator Boundary Layer Under Clocking Effects: Comparison of v2f and LCL-Model

Axel Heidecke, Bernd Stoffel
Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1311-1320, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50955
https://doi.org/10.1115/GT2008-50955
View Paper titled, Numerical Investigation on the Second Stator Boundary Layer Under Clocking Effects: Comparison of v2f and LCL-Model
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Topics: Boundary layers, Stators, Turbines, Turbulence, Boundary-value problems, Bubbles, Pressure, Separation (Technology)
Proceedings Papers

The Influences of Gap Clearance and Surface Roughness on Leakage Loss and Disc Friction of Centrifugal Pumps

Alberto Tamm, Bernd Stoffel
Proc. ASME. FEDSM2002, Volume 1: Fora, Parts A and B, 267-274, July 14–18, 2002
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2002-31324
https://doi.org/10.1115/FEDSM2002-31324
View Paper titled, The Influences of Gap Clearance and Surface Roughness on Leakage Loss and Disc Friction of Centrifugal Pumps
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Topics: Centrifugal pumps, Clearances (Engineering), Disks, Friction, Leakage, Pumps, Surface roughness
Proceedings Papers

Experimental Investigations Concerning Influences on Cavitation Inception at an Axial Test Pump

Bernd Bachert, Bernhard Brunn, Bernd Stoffel
Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 249-256, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45319
https://doi.org/10.1115/FEDSM2003-45319
View Paper titled, Experimental Investigations Concerning Influences on Cavitation Inception at an Axial Test Pump
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Topics: Cavitation, Pumps
Journal Articles

Experimental Investigation of the Clocking Effect in a 1.5-Stage Axial Turbine—Part I: Time-Averaged Results

Sven König, Bernd Stoffel, M. Taher Schobeiri
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2009, 131(2): 021003.
https://doi.org/10.1115/1.2948968
Published Online: January 22, 2009
View Article titled, Experimental Investigation of the Clocking Effect in a 1.5-Stage Axial Turbine—Part I: Time-Averaged Results
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Topics: Flow (Dynamics), Fluctuations (Physics), Pressure, Rotors, Stators, Turbines, Turbulence, Wakes, Suction, Probes
Journal Articles

Experimental Investigation of the Clocking Effect in a 1.5-Stage Axial Turbine—Part II: Unsteady Results and Boundary Layer Behavior

Sven König, Bernd Stoffel, M. Taher Schobeiri
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2009, 131(2): 021004.
https://doi.org/10.1115/1.2948969
Published Online: January 22, 2009
View Article titled, Experimental Investigation of the Clocking Effect in a 1.5-Stage Axial Turbine—Part II: Unsteady Results and Boundary Layer Behavior
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Topics: Boundary layers, Bubbles, Rotors, Separation (Technology), Signals, Stators, Suction, Turbines, Wakes, Fluctuations (Physics)
Proceedings Papers

Clocking Effects in a 1.5-Stage Axial Turbine: Boundary Layer Behaviour at Midspan

Sven Ko¨nig, Axel Heidecke, Bernd Stoffel, Andreas Fiala, Karl Engel
Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 961-972, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-54055
https://doi.org/10.1115/GT2004-54055
View Paper titled, Clocking Effects in a 1.5-Stage Axial Turbine: Boundary Layer Behaviour at Midspan
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Topics: Boundary layers, Turbines, Pressure, Stators, Sensors, Shear stress, Turbulence
Proceedings Papers

Method for Cavitation Erosion Prediction: Model Development

Matevzˇ Dular, Bernd Stoffel, Brane Sˇirok
Proc. ASME. FEDSM2005, Volume 2: Fora, 545-551, June 19–23, 2005
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2005-77352
https://doi.org/10.1115/FEDSM2005-77352
View Paper titled, Method for Cavitation Erosion Prediction: Model Development
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Topics: Cavitation erosion, Model development, Cavitation, Hydrofoil, Flow (Dynamics), Erosion, Pressure, Water, Cavities, Copper foil
Proceedings Papers

Numerical Investigation on a Stator Vane Bypass Transition Over a Separation Bubble Using v′2-f and LCL-Models

Axel Heidecke, Bernd Stoffel
Proc. ASME. GT2006, Volume 3: Heat Transfer, Parts A and B, 1181-1190, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90543
https://doi.org/10.1115/GT2006-90543
View Paper titled, Numerical Investigation on a Stator Vane Bypass Transition Over a Separation Bubble Using v′2-f and LCL-Models
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Topics: Bubbles, Separation (Technology), Stators, Turbulence, Boundary layers, Flow (Dynamics), Inflow, Pressure, Suction, Turbines
Proceedings Papers

Detailed Analysis of Experimental Investigations on Boundary Layer Transition in Wake Disturbed Flow

Andrea Cattanei, Pietro Zunino, Thomas Schro¨der, Bernd Stoffel, Berthold Matyschok
Proc. ASME. GT2006, Volume 6: Turbomachinery, Parts A and B, 1673-1682, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90128
https://doi.org/10.1115/GT2006-90128
View Paper titled, Detailed Analysis of Experimental Investigations on Boundary Layer Transition in Wake Disturbed Flow
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Topics: Boundary layers, Flow (Dynamics), Sensors, Wakes
Proceedings Papers

Comparison of Various Turbulence Models in Respect to Their Suitability for CFD Calculations of Diffuser Flows

Mauricio Co´rdova, Bernd Stoffel
Proc. ASME. GT2006, Volume 6: Turbomachinery, Parts A and B, 1343-1353, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90524
https://doi.org/10.1115/GT2006-90524
View Paper titled, Comparison of Various Turbulence Models in Respect to Their Suitability for CFD Calculations of Diffuser Flows
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Topics: Computational fluid dynamics, Diffusers, Flow (Dynamics), Turbulence, Engineering simulation, Simulation, Air flow, Boundary layers, Geometry, Symmetry (Physics)
Proceedings Papers

CFD-Analysis of the Flow Consisting of Two Mass Flows With Different Temperatures and/or Two Phases in a Turbocompressor

Kai-Henning Brune, Bernd Stoffel, Berthold Matyschok, Stefan Mu¨nz
Proc. ASME. FEDSM2006, Volume 1: Symposia, Parts A and B, 701-711, July 17–20, 2006
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2006-98027
https://doi.org/10.1115/FEDSM2006-98027
View Paper titled, CFD-Analysis of the Flow Consisting of Two Mass Flows With Different Temperatures and/or Two Phases in a Turbocompressor
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Topics: Computational fluid dynamics, Flow (Dynamics), Temperature, Compressors, Turbochargers, Drops, Exhaust gas recirculation, Inflow, Pressure, Temperature distribution
Journal Articles

On the Applicability of a Spoked-Wheel Wake Generator for Clocking Investigations

Sven König, Bernd Stoffel
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. November 2007, 129(11): 1468–1477.
https://doi.org/10.1115/1.2799523
Published Online: May 14, 2007
View Article titled, On the Applicability of a Spoked-Wheel Wake Generator for Clocking Investigations
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Topics: Flow (Dynamics), Generators, Pressure, Rotors, Stators, Turbines, Wakes, Wheels, Suction, Blades