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Journal Articles

Flow Visualization of Wing Vortices of Delta Wings

Philipp Epple, Dustyn Kramer, Michael Steppert
Journal: Journal of Fluids Engineering
Article Type: Photo Gallery
J. Fluids Eng. June 2023, 145(6): 060904.
Paper No: FE-23-1073
DOI: https://doi.org/10.1115/1.4057070
Published Online: March 10, 2023
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Topics: Flow visualization, Vortices, Wings
Proceedings Papers

Impact of the Blade Profiling on the Performance of Low-Pressure Axial Fans

Manuel Fritsche, Philipp Epple, Antonio Delgado
Proc. ASME. IMECE2022, Volume 8: Fluids Engineering; Heat Transfer and Thermal Engineering, V008T10A001, October 30–November 3, 2022
Paper No: IMECE2022-94280
DOI: https://doi.org/10.1115/IMECE2022-94280
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Topics: Blades, Fans, Pressure, Flow (Dynamics), Impellers, Reynolds number, Sheet metal, Flow separation, Air conditioning, Computational fluid dynamics
Proceedings Papers

Impact of the Tip Clearance and the Inflow Nozzle Shape on the Performance of Low-Pressure Axial Fans

Manuel Fritsche, Philipp Epple, Antonio Delgado
Proc. ASME. IMECE2022, Volume 8: Fluids Engineering; Heat Transfer and Thermal Engineering, V008T10A006, October 30–November 3, 2022
Paper No: IMECE2022-95881
DOI: https://doi.org/10.1115/IMECE2022-95881
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Topics: Clearances (Engineering), Fans, Inflow, Nozzles, Pressure, Shapes, Blades, Impellers, Flow (Dynamics), Manufacturing
Journal Articles

Numerical and Theoretical Investigation of the Gap Flow in Centrifugal Fans for Design and Off-Design Conditions

Manuel Fritsche, Philipp Epple, Antonio Delgado
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. March 2023, 145(3): 031203.
Paper No: FE-22-1338
DOI: https://doi.org/10.1115/1.4056311
Published Online: December 21, 2022
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Topics: Design, Flow (Dynamics), Impellers, Pressure, Computational fluid dynamics, Fans, Stress, Dimensional analysis, Blades
Proceedings Papers

Simulation-Driven Blade Work Distribution Based Design Strategy and Optimization of a Low-Pressure Axial Fan

Manuel Fritsche, Philipp Epple, Antonio Delgado
Proc. ASME. FEDSM2022, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC), V001T01A016, August 3–5, 2022
Paper No: FEDSM2022-87635
DOI: https://doi.org/10.1115/FEDSM2022-87635
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Topics: Blades, Design, Optimization, Pressure, Simulation, Impellers, Shapes, Performance characterization, Equilibrium (Physics), Fans
Proceedings Papers

The Impact of Scaling on the Gap Flow Rate of Radial Fans

Manuel Fritsche, Philipp Epple, Antonio Delgado
Proc. ASME. FEDSM2022, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC), V001T01A019, August 3–5, 2022
Paper No: FEDSM2022-87987
DOI: https://doi.org/10.1115/FEDSM2022-87987
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Topics: Fans, Flow (Dynamics), Impellers, Dimensional analysis, Pressure, Design, Dimensions, Fluid density, Performance characterization, Viscosity
Journal Articles

Sluice Gate Discharge From Momentum Balance

Michael Steppert, Philipp Epple, Andreas Malcherek
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. April 2022, 144(4): 041101.
Paper No: FE-21-1355
DOI: https://doi.org/10.1115/1.4053351
Published Online: February 8, 2022
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Topics: Computational fluid dynamics, Gates (Closures), Momentum, Pressure, Sluice gates, Parametrization, Discharge coefficient
Journal Articles

Flow Visualization of Protection Effectiveness of Partition Walls and Face Masks

Philipp Epple, Michael Steppert, Michael Florschuetz, Peter Dahlem
Journal: Journal of Fluids Engineering
Article Type: Photo Gallery
J. Fluids Eng. April 2022, 144(4): 040907.
Paper No: FE-21-1683
DOI: https://doi.org/10.1115/1.4053574
Published Online: January 29, 2022
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Topics: Flow visualization
Journal Articles

Effect of Winglets on Wing Tip Vortices

Philipp Epple, Michael Steppert, Michael Florschuetz
Journal: Journal of Fluids Engineering
Article Type: Photo Gallery
J. Fluids Eng. April 2022, 144(4): 040906.
Paper No: FE-21-1671
DOI: https://doi.org/10.1115/1.4053573
Published Online: January 29, 2022
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Topics: Wake turbulence, Wings
Proceedings Papers

Aerodynamic Performance Analysis of Winglets of Modern Sailplanes

Jens Kästner, Philipp Epple, Michael Steppert
Proc. ASME. IMECE2021, Volume 10: Fluids Engineering, V010T10A045, November 1–5, 2021
Paper No: IMECE2021-69672
DOI: https://doi.org/10.1115/IMECE2021-69672
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Topics: Computation, Computational fluid dynamics, Design, Inviscid flow, Wings
Proceedings Papers

Design of a Hydrokinetic Turbine for Energy Ships Applications With Combined Extended Analytical Betz-Schmidt Method and Numerical Simulations CFD

Philipp Epple, Jonas Holzbrecher, Michael Steppert, Max F. Platzer
Proc. ASME. IMECE2021, Volume 10: Fluids Engineering, V010T10A049, November 1–5, 2021
Paper No: IMECE2021-70051
DOI: https://doi.org/10.1115/IMECE2021-70051
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Topics: Computational fluid dynamics, Computer simulation, Design, Hydraulic turbines, Ships, Turbines, Design methodology, Airfoils, Torque, Water
Proceedings Papers

Wall Bounded Flows and a General Proof of the Validity of the Universal Logarithmic Law of the Wall

Philipp Epple, Michael Steppert, Andreas Malcherek
Proc. ASME. FEDSM2021, Volume 3: Fluid Mechanics; Micro and Nano Fluid Dynamics; Multiphase Flow, V003T05A003, August 10–12, 2021
Paper No: FEDSM2021-65733
DOI: https://doi.org/10.1115/FEDSM2021-65733
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Topics: Flow (Dynamics), Navier-Stokes equations, Turbulence, Boundary layers, Dimensional analysis, External pressure, Flat plates, Laminar flow, Students, Teaching
Proceedings Papers

Impact of Flow Characteristics on the Pressure Distribution on Sluice Gates

Michael Steppert, Philipp Epple, Andreas Malcherek
Proc. ASME. FEDSM2021, Volume 2: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V002T03A006, August 10–12, 2021
Paper No: FEDSM2021-65396
DOI: https://doi.org/10.1115/FEDSM2021-65396
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Topics: Flow (Dynamics), Gates (Closures), Pressure, Sluice gates
Proceedings Papers

Analytical and Numerical Investigation of the Fluid Structure Interaction of an Elastic Beam in a Water Channel

Manuel Fritsche, Philipp Epple, Antonio Delgado
Proc. ASME. IMECE2020, Volume 10: Fluids Engineering, V010T10A049, November 16–19, 2020
Paper No: IMECE2020-23831
DOI: https://doi.org/10.1115/IMECE2020-23831
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Topics: Deflection, Fluid structure interaction, Water
Proceedings Papers

A New Method for Performance Measurement of PPV Fans for Fire Fighting Under Realistic Conditions

Michael Steppert, Philipp Epple, Michael Steber, Stefan Gast
Proc. ASME. IMECE2020, Volume 10: Fluids Engineering, V010T10A055, November 16–19, 2020
Paper No: IMECE2020-24381
DOI: https://doi.org/10.1115/IMECE2020-24381
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Topics: Fans, Fire, Nozzles, Flow (Dynamics), Smoke, Doors, Pressure, Combustion, Computational fluid dynamics, Design
Proceedings Papers

CFD Investigations on Drag Reduction due to Cavitator Heads on Supercavitating Bodies

Michael Steppert, Philipp Epple, Stefan Gast, Zoltan Von Mohos, Martin Wortmann
Proc. ASME. IMECE2020, Volume 10: Fluids Engineering, V010T10A056, November 16–19, 2020
Paper No: IMECE2020-24480
DOI: https://doi.org/10.1115/IMECE2020-24480
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Topics: Computational fluid dynamics, Drag reduction
Proceedings Papers

Parametrisation of the Pressure and the Momentum Integral for Inclined Sluicegates Flows

Michael Steppert, Philipp Epple, Andreas Malcherek
Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T01A019, July 13–15, 2020
Paper No: FEDSM2020-20253
DOI: https://doi.org/10.1115/FEDSM2020-20253
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Topics: Flow (Dynamics), Momentum, Pressure, Sluice gates, Discharge coefficient, Flux (Metallurgy), Polynomials, Water, Computational fluid dynamics, Energy conservation
Proceedings Papers

Numerical Performance Predictions of Artificial Intelligence-Driven Centrifugal Compressor Designs

Manuel Fritsche, Philipp Epple, Boris Kubrak, Stefan Gast, Antonio Delgado, Valentyn Barannik
Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T01A034, July 13–15, 2020
Paper No: FEDSM2020-20087
DOI: https://doi.org/10.1115/FEDSM2020-20087
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Topics: Compressors, Design, Turbomachinery, Artificial neural networks, Performance characterization, Computer software, Errors, Geometry, Machinery, Numerical analysis
Proceedings Papers

On How the Generation of Lift Can Be Explained in a Closed Form Based on the Fundamental Conservation Equations

Philipp Epple, Holger Babinsky, Michael Steppert, Manuel Fritsche
Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T03A005, July 13–15, 2020
Paper No: FEDSM2020-20261
DOI: https://doi.org/10.1115/FEDSM2020-20261
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Topics: Aerodynamics, Airfoils, Flow (Dynamics), Fluid mechanics, Momentum, Newton's laws of motion, Suction, Venturi tubes
Proceedings Papers

Numerical Verification of the Thermodynamic Determination of the Hydraulic Efficiency of Radial Fans

Philipp Epple, Manuel Fritsche, Felix Reinker, Stefan aus der Wiesche
Proc. ASME. IMECE2019, Volume 7: Fluids Engineering, V007T08A060, November 11–14, 2019
Paper No: IMECE2019-11417
DOI: https://doi.org/10.1115/IMECE2019-11417
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Topics: Fans