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Gregory F. Nellis
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Journal Articles

Droplet Formation in Dynamic Stratified Liquid–Liquid Systems for Solution-Based Deposition Methods

Brett A. Prussack, Sean M. Foradori, Michael S. Arnold, Gregory F. Nellis, Arganthael Berson
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2023, 145(12): 121401.
Paper No: FE-23-1134
https://doi.org/10.1115/1.4062995
Published Online: August 8, 2023
View Article titled, Droplet Formation in Dynamic Stratified Liquid–Liquid Systems for Solution-Based Deposition Methods
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Topics: Flow (Dynamics), Fluids, Water, Friction, Plates (structures), Needles, Inks
Journal Articles

Plume Stability During Direct Contact Condensation of Steam in a Crossflow of Subcooled Water, at High Mass Flux and With a Small Nozzle Diameter

Zach R. Alden, Gunnar D. Maples, Kristofer M. Dressler, Gregory F. Nellis, Arganthaël Berson
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. September 2021, 143(9): 091602.
Paper No: HT-21-1036
https://doi.org/10.1115/1.4051667
Published Online: July 30, 2021
View Article titled, Plume Stability During Direct Contact Condensation of Steam in a Crossflow of Subcooled Water, at High Mass Flux and With a Small Nozzle Diameter
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Topics: Condensation, Nozzles, Oscillations, Plumes (Fluid dynamics), Pressure, Stability, Steam, Water, Subcooling, Bubbles
Includes: Supplementary data
Journal Articles

Instantaneous Optical Measurement of the Temperature at the Interface Between a Wall and a Thin Liquid Film

Brian E. Fehring, Roman W. Morse, Jason Chan, Kristofer M. Dressler, Evan T. Hurlburt, Gregory F. Nellis, Arganthaël Berson
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2020, 142(12): 121701.
Paper No: HT-20-1281
https://doi.org/10.1115/1.4048090
Published Online: September 18, 2020
View Article titled, Instantaneous Optical Measurement of the Temperature at the Interface Between a Wall and a Thin Liquid Film
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Topics: Calibration, Flow (Dynamics), Lubrication theory, Temperature, Thermoreflectance, Vapors, Refractive index, Wall temperature, Fluctuations (Physics), Liquid films
Proceedings Papers

Thermoreflectance Wall Temperature Measurement in Annular Two-Phase Flow

Jason Chan, Brian E. Fehring, Roman W. Morse, Kristofer M. Dressler, Gregory F. Nellis, Evan T. Hurlburt, Arganthaël Berson
Proc. ASME. ICNMM2019, ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels, V001T02A007, June 23–26, 2019
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2019-4249
https://doi.org/10.1115/ICNMM2019-4249
View Paper titled, Thermoreflectance Wall Temperature Measurement in Annular Two-Phase Flow
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Topics: Thermoreflectance, Two-phase flow, Wall temperature, Heat transfer coefficients, Calibration, Flow (Dynamics), Heat flux, Liquid films, Uncertainty, Vapors
Proceedings Papers

Experimental Testing of s-CO2 Regenerator for Use as a Replacement to High Cost Printed Circuit Recuperators for Use in s-CO2 Recompression Brayton Cycle

Jacob F. Hinze, Gregory F. Nellis, Mark H. Anderson
Proc. ASME. ES2016, Volume 1: Biofuels, Hydrogen, Syngas, and Alternate Fuels; CHP and Hybrid Power and Energy Systems; Concentrating Solar Power; Energy Storage; Environmental, Economic, and Policy Considerations of Advanced Energy Systems; Geothermal, Ocean, and Emerging Energy Technologies; Photovoltaics; Posters; Solar Chemistry; Sustainable Building Energy Systems; Sustainable Infrastructure and Transportation; Thermodynamic Analysis of Energy Systems; Wind Energy Systems and Technologies, V001T04A018, June 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: ES2016-59615
https://doi.org/10.1115/ES2016-59615
View Paper titled, Experimental Testing of s-CO2 Regenerator for Use as a Replacement to High Cost Printed Circuit Recuperators for Use in s-CO2 Recompression Brayton Cycle
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Topics: Brayton cycle, Circuits, Supercritical carbon dioxide, Testing, Cycles, Fluids, Heat exchangers, Thermal energy, Construction, Heat
Proceedings Papers

Modeling Off-Design and Part-Load Performance of Supercritical Carbon Dioxide Power Cycles

John J. Dyreby, Sanford A. Klein, Gregory F. Nellis, Douglas T. Reindl
Proc. ASME. GT2013, Volume 8: Supercritical CO2 Power Cycles; Wind Energy; Honors and Awards, V008T34A014, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95824
https://doi.org/10.1115/GT2013-95824
View Paper titled, Modeling Off-Design and Part-Load Performance of Supercritical Carbon Dioxide Power Cycles
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Topics: Design, Modeling, Stress, Supercritical carbon dioxide, Thermodynamic power cycles, Brayton cycle, Cycles, Cooling, Fluids, Heat
Proceedings Papers

Design and Test of Hydrostatic Gas Bearings for a Hybrid Cryogenic Refrigerator

Jonathan C. Evans, Gregory F. Nellis
Proc. ASME. IMECE2003, Advanced Energy Systems, 67-76, November 15–21, 2003
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2003-43070
https://doi.org/10.1115/IMECE2003-43070
View Paper titled, Design and Test of Hydrostatic Gas Bearings for a Hybrid Cryogenic Refrigerator
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Topics: Design, Gas bearings, Hydrostatics, Journal bearings, Bearings, Flow (Dynamics), Stiffness, Turbines, Clearances (Engineering), Geometry
Proceedings Papers

Actively Cooled Current Leads for Superconducting Electronics Using Mixed-Gas Joule-Thomson Refrigeration

Gregory F. Nellis, John M. Pfotenhauer, Sanford A. Klein
Proc. ASME. IMECE2004, Advanced Energy Systems, 339-346, November 13–19, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2004-60284
https://doi.org/10.1115/IMECE2004-60284
View Paper titled, Actively Cooled Current Leads for Superconducting Electronics Using Mixed-Gas Joule-Thomson Refrigeration
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Topics: Electronics, Joules, Refrigeration, Stress, Temperature, Aluminum, Cooling, Copper, Cycles, Electrical conductance
Proceedings Papers

Design and Test of 300W, 65K Pulse Tube

Seth A. Potratz, Gregory F. Nellis, James R. Maddocks, John M. Pfotenhauer
Proc. ASME. IMECE2004, Advanced Energy Systems, 489-497, November 13–19, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2004-60806
https://doi.org/10.1115/IMECE2004-60806
View Paper titled, Design and Test of 300W, 65K Pulse Tube
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Topics: Design, Pressure, Compressors, Flow (Dynamics), Heat exchangers, Temperature, Pistons, Stress
Proceedings Papers

Measurement of Heat Transfer Coefficients for Non-Azeotropic Hydrocarbon Mixtures at Cryogenic Temperatures

Cory B. Hughes, Gregory F. Nellis, John M. Pfotenhauer
Proc. ASME. IMECE2004, Advanced Energy Systems, 415-422, November 13–19, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2004-60381
https://doi.org/10.1115/IMECE2004-60381
View Paper titled, Measurement of Heat Transfer Coefficients for Non-Azeotropic Hydrocarbon Mixtures at Cryogenic Temperatures
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Topics: Heat transfer coefficients, Temperature, Cycles, Flow (Dynamics), Refrigeration, Boiling, Design, Joules, Nitrogen, Thermofluids
Proceedings Papers

A Thermal Model of a Fiber Optic Bundle for a Hybrid Solar Lighting System

Michael J. Cheadle, Gregory F. Nellis, Sanford A. Klein, William A. Beckman
Proc. ASME. IMECE2005, Energy Conversion and Resources, 367-374, November 5–11, 2005
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2005-80009
https://doi.org/10.1115/IMECE2005-80009
View Paper titled, A Thermal Model of a Fiber Optic Bundle for a Hybrid Solar Lighting System
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Topics: Fibers, Solar energy, Energy consumption, Sunlight, Cooling, Design, Failure, Heat transfer, Stress, Structures
Journal Articles

Effectiveness-NTU Relationship for a Counterflow Heat Exchanger Subjected to an External Heat Transfer

Gregory F. Nellis, John M. Pfotenhauer
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. September 2005, 127(9): 1071–1073.
https://doi.org/10.1115/1.2010496
Published Online: November 11, 2004
View Article titled, Effectiveness-NTU Relationship for a Counterflow Heat Exchanger Subjected to an External Heat Transfer
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Topics: Heat exchangers, Heat transfer, Heat, Stress
Journal Articles

Effectiveness-NTU Relations for Heat Exchangers With Streams Having Significant Kinetic Energy Variation

Gregory F. Nellis
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. April 2003, 125(2): 377–387.
https://doi.org/10.1115/1.1560154
Published Online: March 21, 2003
View Article titled, Effectiveness-NTU Relations for Heat Exchangers With Streams Having Significant Kinetic Energy Variation
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Topics: Flow (Dynamics), Heat exchangers, Kinetic energy, Heat transfer, Temperature, Fluids