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Proceedings Papers

Sensor System Maturation for Gas Turbine Engine Particulate Ingestion Monitoring

George Papadopoulos, Daniel Bivolaru, Spencer Siu
Proc. ASME. GT2023, Volume 4: Controls, Diagnostics, and Instrumentation, V004T05A033, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-105793
https://doi.org/10.1115/GT2023-105793
View Paper titled, Sensor System Maturation for Gas Turbine Engine Particulate Ingestion Monitoring
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Topics: Gas turbines, Particulate matter, Sensors, Engines, Aircraft, Damage, Dust, Flight, Sands, Turbine components
Proceedings Papers

Fluid Velocity Sensing at Extreme Altitude or Low Density Environments

George Papadopoulos, Daniel Bivolaru, Andrew Murphy, Spencer Siu
Proc. ASME. FEDSM2022, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC), V001T02A003, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87083
https://doi.org/10.1115/FEDSM2022-87083
View Paper titled, Fluid Velocity Sensing at Extreme Altitude or Low Density Environments
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Topics: Density, Fluids, Sensors, Trajectories (Physics), Wind
Proceedings Papers

PIV Measurements of Recirculation Patterns in a Stirred Tank

Khaled J. Hammad, George Papadopoulos
Proc. ASME. IMECE2001, Fluids Engineering, 99-104, November 11–16, 2001
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2001/FED-24936
https://doi.org/10.1115/IMECE2001/FED-24936
View Paper titled, PIV Measurements of Recirculation Patterns in a Stirred Tank
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Topics: Blades, Flow (Dynamics), Impellers, Laminar flow, Switches, Transparency, Vessels
Proceedings Papers

Boundary Layer Multi-Property Flow Measurements Using a Micro-Plasma Sensor

George Papadopoulos, Daniel Bivolaru, Nicholas Martin, Timothy Dawideit
Proc. ASME. FEDSM2021, Volume 2: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V002T04A015, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-65560
https://doi.org/10.1115/FEDSM2021-65560
View Paper titled, Boundary Layer Multi-Property Flow Measurements Using a Micro-Plasma Sensor
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Topics: Boundary layers, Dynamics (Mechanics), Flow measurement, Plasmas (Ionized gases), Pressure, Sensors
Proceedings Papers

Frequency Response Characterization for Dynamic Measurement of Pressure

George Papadopoulos, Daniel Bivolaru
Proc. ASME. AJKFluids2019, Volume 4: Fluid Measurement and Instrumentation; Micro and Nano Fluid Dynamics, V004T04A035, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-4730
https://doi.org/10.1115/AJKFluids2019-4730
View Paper titled, Frequency Response Characterization for Dynamic Measurement of Pressure
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Topics: Frequency response, Pressure, Transducers, Packaging, Pressure measurement, Probes, Signals, Dynamic response, Flow (Dynamics), Geometry
Proceedings Papers

Plasma Driven Shock Tube for Dynamic Characterization of Sensors

Daniel Bivolaru, George Papadopoulos
Proc. ASME. AJKFluids2019, Volume 4: Fluid Measurement and Instrumentation; Micro and Nano Fluid Dynamics, V004T04A005, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-4869
https://doi.org/10.1115/AJKFluids2019-4869
View Paper titled, Plasma Driven Shock Tube for Dynamic Characterization of Sensors
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Topics: Plasmas (Ionized gases), Sensors, Shock tubes, Contamination, Diaphragms (Mechanical devices), Diaphragms (Structural), Flow measurement, Particulate matter, Quartz, Shock (Mechanics)
Proceedings Papers

Mass Flow Performance for Large Aspect Ratio Supersonic Boundary Layer Bleed Holes

George Papadopoulos, Gary Go, Frank Celentano, Robert Bakos
Proc. ASME. FEDSM2018, Volume 1: Flow Manipulation and Active Control; Bio-Inspired Fluid Mechanics; Boundary Layer and High-Speed Flows; Fluids Engineering Education; Transport Phenomena in Energy Conversion and Mixing; Turbulent Flows; Vortex Dynamics; DNS/LES and Hybrid RANS/LES Methods; Fluid Structure Interaction; Fluid Dynamics of Wind Energy; Bubble, Droplet, and Aerosol Dynamics, V001T03A002, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2018-83052
https://doi.org/10.1115/FEDSM2018-83052
View Paper titled, Mass Flow Performance for Large Aspect Ratio Supersonic Boundary Layer Bleed Holes
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Topics: Boundary layers, Flow (Dynamics), Pressure, Plates (structures), Compression, Computer simulation, Drag (Fluid dynamics), Ducts, Friction, Pressure drop
Proceedings Papers

Real Time Gas Turbine Engine Particulate Ingestion Sensor for Particle Size and Composition

George Papadopoulos, Daniel Bivolaru, Jiaji Lin
Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T05A029, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77137
https://doi.org/10.1115/GT2018-77137
View Paper titled, Real Time Gas Turbine Engine Particulate Ingestion Sensor for Particle Size and Composition
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Topics: Gas turbines, Particle size, Particulate matter, Sensors, Engines, Flight, Turbine components, Aircraft, Aluminum, Blades
Proceedings Papers

Evaluation of an Integrated Micro-Cooling Chip Architecture for Managing Thermal Concerns of a Power Electronics Module

George Papadopoulos, Daniel Kearney, Daniele Torresin
Proc. ASME. FEDSM2017, Volume 1B, Symposia: Fluid Measurement and Instrumentation; Fluid Dynamics of Wind Energy; Renewable and Sustainable Energy Conversion; Energy and Process Engineering; Microfluidics and Nanofluidics; Development and Applications in Computational Fluid Dynamics; DNS/LES and Hybrid RANS/LES Methods, V01BT10A015, July 30–August 3, 2017
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2017-69519
https://doi.org/10.1115/FEDSM2017-69519
View Paper titled, Evaluation of an Integrated Micro-Cooling Chip Architecture for Managing Thermal Concerns of a Power Electronics Module
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Topics: Cooling, Electronics, Additive manufacturing, Circuits, Coolants, Design, Laminates, Distributed power generation, Fluid dynamics, Heat
Journal Articles

A Functional Relationship for Modeling Laminar to Turbulent Flow Transitions

George Papadopoulos
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. September 2017, 139(9): 091202.
Paper No: FE-15-1606
https://doi.org/10.1115/1.4036594
Published Online: June 20, 2017
View Articletitled, A Functional Relationship for Modeling Laminar to Turbulent Flow Transitions
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Topics: Flow (Dynamics), Reynolds number, Turbulence, Pipe flow, Jets, Separation (Technology)
Proceedings Papers

Addressing Thermal Management Concerns for a Power Electronics Module Using an Integrated Micro-Cooling Chip Array Scheme

George Papadopoulos, Daniel Kearney
Proc. ASME. IMECE2015, Volume 10: Micro- and Nano-Systems Engineering and Packaging, V010T13A038, November 13–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2015-53728
https://doi.org/10.1115/IMECE2015-53728
View Paper titled, Addressing Thermal Management Concerns for a Power Electronics Module Using an Integrated Micro-Cooling Chip Array Scheme
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Topics: Cooling, Electronics, Thermal management, Design, Heat exchangers, Circuits, Coolants, Flow (Dynamics), Flux (Metallurgy), Heat
Proceedings Papers

Hydrodynamic Performance and Shape Considerations of a Compact AUV for Riverine Environments

George Papadopoulos
Proc. ASME. AJKFluids2015, Volume 1: Symposia, V001T15A007, July 26–31, 2015
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2015-15669
https://doi.org/10.1115/AJKFluids2015-15669
View Paper titled, Hydrodynamic Performance and Shape Considerations of a Compact AUV for Riverine Environments
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Topics: Shapes, Flow (Dynamics), Dynamics (Mechanics), Fluid dynamics, Water, Bifurcation, Currents, Oceans, Physics, Shape design
Proceedings Papers

Performance Characteristics of a Variable Density Pin Array Micro-Heat Exchanger

George Papadopoulos, Nicholas Tiliakos, Gabriel Benel
Proc. ASME. IMECE2011, Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B, 1037-1044, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-62888
https://doi.org/10.1115/IMECE2011-62888
View Paper titled, Performance Characteristics of a Variable Density Pin Array Micro-Heat Exchanger
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Topics: Density, Heat, Performance characterization, Manufacturing, Cooling, Design, Flow (Dynamics), Fluids, Heat exchangers, Heat transfer
Proceedings Papers

A Functional Scaling Relationship for Laminar to Turbulent Flow Regimes

George Papadopoulos
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 2889-2901, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-16012
https://doi.org/10.1115/AJK2011-16012
View Paper titled, A Functional Scaling Relationship for Laminar to Turbulent Flow Regimes
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Topics: Turbulence, Flow (Dynamics), Boundary-value problems, Dimensional analysis, Jets, Navier-Stokes equations, Pipe flow, Reynolds number
Proceedings Papers

Air Entrainment Studies for a Supersonic Micro-Ejector System

George Papadopoulos, Jason Tyll, Alan Drake, Randy Chue, John D. Williams, Paul C. Galambos
Proc. ASME. FEDSM2008, Volume 1: Symposia, Parts A and B, 561-567, August 10–14, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2008-55220
https://doi.org/10.1115/FEDSM2008-55220
View Paper titled, Air Entrainment Studies for a Supersonic Micro-Ejector System
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Topics: Air entrainment, Ejectors, Propulsion
Proceedings Papers

A MEMS-Based Shear Stress Sensor for High Temperature Applications

Nicholas Tiliakos, George Papadopoulos, Andrew M. O’Grady, Vijay Modi, Ronan Larger, Luc G. Fre´chette
Proc. ASME. FEDSM2007, Volume 2: Fora, Parts A and B, 1477-1478, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37700
https://doi.org/10.1115/FEDSM2007-37700
View Paper titled, A MEMS-Based Shear Stress Sensor for High Temperature Applications
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Topics: High temperature, Hypersonic flow, Microelectromechanical systems, Sensors, Shear stress
Proceedings Papers

Flow Structure and Scalar Transport for Jets Impinging on a Rotating Flat Surface

George Papadopoulos, Khaled J. Hammad
Proc. ASME. HT-FED2004, Volume 1, 745-752, July 11–15, 2004
Publisher: American Society of Mechanical Engineers
Paper No: HT-FED2004-56917
https://doi.org/10.1115/HT-FED2004-56917
View Paper titled, Flow Structure and Scalar Transport for Jets Impinging on a Rotating Flat Surface
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Topics: Flow (Dynamics), Jets, Scalars, Momentum, Water, Flat plates, Nozzles, Pipes, Reynolds number, Rotation
Proceedings Papers

Time-Resolved PIV Measurements Within a Triple Impeller Stirred-Tank

George Papadopoulos, Khaled J. Hammad
Proc. ASME. FEDSM2003, Volume 2: Symposia, Parts A, B, and C, 1223-1230, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45295
https://doi.org/10.1115/FEDSM2003-45295
View Paper titled, Time-Resolved PIV Measurements Within a Triple Impeller Stirred-Tank
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Topics: Impellers, Flow (Dynamics), Blades, Turbines, Cycles, Fluids, Framing (Construction), Lasers, Particulate matter, Structural frames
Proceedings Papers

Droplet-Laden Homogeneous Turbulent Flow Over Unheated and Heated Cylinders

Cary Presser, George Papadopoulos, John F. Widmann
Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 989-999, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45240
https://doi.org/10.1115/FEDSM2003-45240
View Paper titled, Droplet-Laden Homogeneous Turbulent Flow Over Unheated and Heated Cylinders
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Topics: Cylinders, Drops, Turbulence, Flow (Dynamics), Particulate matter, Probability, Vapors, Aerosols, Dynamics (Mechanics), Fire
Proceedings Papers

Bifurcation Characteristics of Flows in Rectangular Sudden Expansion Channels

Francine Battaglia, George Papadopoulos
Proc. ASME. FEDSM2005, Volume 1: Symposia, Parts A and B, 91-101, June 19–23, 2005
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2005-77098
https://doi.org/10.1115/FEDSM2005-77098
View Paper titled, Bifurcation Characteristics of Flows in Rectangular Sudden Expansion Channels
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Topics: Bifurcation, Flow (Dynamics), Reynolds number, Engineering simulation, Simulation, Laminar flow, Ducts, Dynamics (Mechanics), Geometry, Stability