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David A. Johnson
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Journal Articles

Validation of a RANS Turbulence Model for a S833 Wind Turbine Airfoil With a Trailing Edge Flap Using Oil Visualization and Pressure Taps

Rafat Jami, David A. Johnson
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. August 2024, 146(8): 081206.
Paper No: FE-23-1532
https://doi.org/10.1115/1.4064853
Published Online: March 22, 2024
View Article titled, Validation of a RANS Turbulence Model for a S833 Wind Turbine Airfoil With a Trailing Edge Flap Using Oil Visualization and Pressure Taps
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Topics: Airfoils, Blades, Computational fluid dynamics, Flow (Dynamics), Pressure, Separation (Technology), Turbulence, Wind turbines, Chords (Trusses), Skin friction (Fluid dynamics)
Journal Articles

Large Eddy Simulation of Transitional Separated Flow Over a Low Reynolds Number Cambered Airfoil

Alison Zilstra, David A. Johnson
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. March 2023, 145(3): 031303.
Paper No: FE-22-1331
https://doi.org/10.1115/1.4056280
Published Online: December 9, 2022
View Article titled, Large Eddy Simulation of Transitional Separated Flow Over a Low Reynolds Number Cambered Airfoil
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Topics: Airfoils, Flow (Dynamics), Separation (Technology), Simulation, Pressure, Large eddy simulation, Boundary layers, Turbulence, Reynolds number
Proceedings Papers

Pressure and Acceleration Determination Methods Using PIV Velocity Data

Kobra Gharali, David A. Johnson
Proc. ASME. FEDSM2008, Volume 1: Symposia, Parts A and B, 657-664, August 10–14, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2008-55157
https://doi.org/10.1115/FEDSM2008-55157
View Paper titled, Pressure and Acceleration Determination Methods Using PIV Velocity Data
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Topics: Pressure, Flow (Dynamics), Algorithms, Engineering systems and industry applications, Errors, Filters, Fluids, Modeling, Navier-Stokes equations, Particulate matter
Proceedings Papers

A Novel Y-Channel Design for Measuring the Zeta Potential Using the Current Monitoring Technique

Zeyad A. Almutairi, Tomasz Glawdel, Carolyn L. Ren, David A. Johnson
Proc. ASME. IMECE2007, Volume 11: Micro and Nano Systems, Parts A and B, 893-899, November 11–15, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2007-42240
https://doi.org/10.1115/IMECE2007-42240
View Paper titled, A Novel Y-Channel Design for Measuring the Zeta Potential Using the Current Monitoring Technique
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Topics: Design, Plasma desorption mass spectrometry, Computational methods, Glass, Diffusion (Physics), Displacement, DNA, Electrolysis, Errors, Flow (Dynamics)
Journal Articles

Analysis of the Flow Through a Vented Automotive Brake Rotor

David A. Johnson, Associate Professor, Bryan A. Sperandei, Graduate Student, Ross Gilbert, Graduate Student
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. November 2003, 125(6): 979–986.
https://doi.org/10.1115/1.1624426
Published Online: January 12, 2004
View Article titled, Analysis of the Flow Through a Vented Automotive Brake Rotor
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Topics: Flow (Dynamics), Rotors
Journal Articles

Analysis of the Immediate Boundary Conditions of an Axial Flow Impeller

David A. Johnson
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. December 2001, 123(4): 771–779.
https://doi.org/10.1115/1.1412846
Published Online: August 8, 2001
View Article titled, Analysis of the Immediate Boundary Conditions of an Axial Flow Impeller
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Topics: Blades, Boundary-value problems, Energy dissipation, Impellers, Kinetic energy, Laser Doppler anemometry, Particulate matter, Turbulence, Vortices, Flow (Dynamics)