1-20 of 25
Gregory J. Michna
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

The Effects of 3D Printing Parameters and Surface Roughness on Convective Heat Transfer Performance

Lucas Pereira, Todd Letcher, Gregory J. Michna
Proc. ASME. HT2019, ASME 2019 Heat Transfer Summer Conference, V001T13A011, July 14–17, 2019
Paper No: HT2019-3591
DOI: https://doi.org/10.1115/HT2019-3591
View Paper
PDF
Topics: Additive manufacturing, Convection, Surface roughness, Heat transfer coefficients, Reynolds number, Extruding, Heat exchangers, Heat sinks, Manufacturing, Polymers
Proceedings Papers

Thermal Conductivity Testing Apparatus for 3D Printed Materials

Tiffaney Flaata, Gregory J. Michna, Todd Letcher
Proc. ASME. HT2017, Volume 2: Heat Transfer Equipment; Heat Transfer in Multiphase Systems; Heat Transfer Under Extreme Conditions; Nanoscale Transport Phenomena; Theory and Fundamental Research in Heat Transfer; Thermophysical Properties; Transport Phenomena in Materials Processing and Manufacturing, V002T15A006, July 9–12, 2017
Paper No: HT2017-4856
DOI: https://doi.org/10.1115/HT2017-4856
View Paper
PDF
Topics: Additive manufacturing, Testing, Thermal conductivity, Polymer composites, Heat exchangers, Heat transfer, Metals, Polymers, Brass (Metal), Bronze
Proceedings Papers

Reducing Crossflow Effects in Arrays of Impinging Jets

Nicholas R. Arens, Mitchell P. Morem, Jeffrey Doom, Gregory J. Michna
Proc. ASME. HT2017, Volume 1: Aerospace Heat Transfer; Computational Heat Transfer; Education; Environmental Heat Transfer; Fire and Combustion Systems; Gas Turbine Heat Transfer; Heat Transfer in Electronic Equipment; Heat Transfer in Energy Systems, V001T08A007, July 9–12, 2017
Paper No: HT2017-4849
DOI: https://doi.org/10.1115/HT2017-4849
View Paper
PDF
Topics: Jets, Heat transfer, Nozzles, Computational fluid dynamics, Flow (Dynamics), Fluids, Microelectronic devices, Simulation, Thermal management, Additive manufacturing
Proceedings Papers

Oscillating Heat Pipe Performance With Modified Evaporator Geometries

Mitchell P. Hoesing, Gregory J. Michna
Proc. ASME. ICNMM2016, ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, V001T05A003, July 10–14, 2016
Paper No: ICNMM2016-7980
DOI: https://doi.org/10.1115/ICNMM2016-7980
View Paper
PDF
Topics: Heat pipes, Cavities, Condensers (steam plant), Cooling, Heat transfer, Thermal energy, Drying, Fluids, Geometry, Heat
Proceedings Papers

Investigation of Fast Pyrolysis of Camelina Sativa Meal in an Auger Reactor

Evan R. Almberg, Gregory J. Michna, Stephen P. Gent
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, V001T02A007, June 26–30, 2016
Paper No: ES2016-59601
DOI: https://doi.org/10.1115/ES2016-59601
View Paper
PDF
Topics: Augers, Pyrolysis, Temperature, Condensers (steam plant), Feedstock, Biomass, Bombs, Rheology, Vapors, Water
Proceedings Papers

Start-Up and Transient Behavior of an Oscillating Heat Pipe

Sagar Babu Paudel, Gregory J. Michna
Proc. ASME. ICNMM2015, ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels, V001T07A001, July 6–9, 2015
Paper No: ICNMM2015-48438
DOI: https://doi.org/10.1115/ICNMM2015-48438
View Paper
PDF
Topics: Heat pipes, Transients (Dynamics), Methanol, Fluids, Temperature, Heat, Stress, Water, Cooling, Electronics
Proceedings Papers

Geometric Evaporator Enhancements of an Oscillating Heat Pipe

Mitchell P. Hoesing, Gregory J. Michna
Proc. ASME. ICNMM2015, ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels, V001T07A002, July 6–9, 2015
Paper No: ICNMM2015-48440
DOI: https://doi.org/10.1115/ICNMM2015-48440
View Paper
PDF
Topics: Heat pipes, Cooling, Pins (Engineering), Cavities, Computer cooling, Condensers (steam plant), Fluid dynamics, Fluids, Geometry, Heat
Proceedings Papers

Investigation of Fast Pyrolysis of Brassica Carinata in an Auger Type Reactor

William D. Sonnek, Stephen P. Gent, Gregory J. Michna
Proc. ASME. ES2015, Volume 1: Advances in Solar Buildings and Conservation; Climate Control and the Environment; Alternate Fuels and Infrastructure; ARPA-E; Combined Energy Cycles, CHP, CCHP, and Smart Grids; Concentrating Solar Power; Economic, Environmental, and Policy Aspects of Alternate Energy; Geothermal Energy, Harvesting, Ocean Energy and Other Emerging Technologies; Hydrogen Energy Technologies; Low/Zero Emission Power Plants and Carbon Sequestration; Micro and Nano Technology Applications and Materials, V001T02A002, June 28–July 2, 2015
Paper No: ES2015-49376
DOI: https://doi.org/10.1115/ES2015-49376
View Paper
PDF
Topics: Augers, Pyrolysis, Temperature, Condensers (steam plant), Oils, Petroleum, Water, Biomass, Bombs, Rheology
Proceedings Papers

Integration of a Pulsating Heat Pipe in a Flat Plate Heat Sink

Mitchell P. Hoesing, Gregory J. Michna
Proc. ASME. ICNMM2014, ASME 2014 12th International Conference on Nanochannels, Microchannels and Minichannels, V001T05A001, August 3–7, 2014
Paper No: ICNMM2014-21233
DOI: https://doi.org/10.1115/ICNMM2014-21233
View Paper
PDF
Topics: Flat plates, Heat pipes, Heat sinks, Condensers (steam plant), Fluids, Thermal resistance, Water, Aluminum, Aluminum plate, Design
Proceedings Papers

Effect of Inclination Angle on Pulsating Heat Pipe Performance

Sagar Babu Paudel, Gregory J. Michna
Proc. ASME. ICNMM2014, ASME 2014 12th International Conference on Nanochannels, Microchannels and Minichannels, V001T05A006, August 3–7, 2014
Paper No: ICNMM2014-22016
DOI: https://doi.org/10.1115/ICNMM2014-22016
View Paper
PDF
Topics: Heat pipes, Flux (Metallurgy), Heat, Thermal resistance, Computer cooling, Construction, Copper, Heat transfer, Microelectronic devices, Pressure
Proceedings Papers

Properties of Brassica Carinata and Camelina Sativa Meals and Fast Pyrolysis Derived Bio-Oils

John Harris, James Lawburgh, Brian Lawburgh, Gregory J. Michna, Stephen P. Gent
Proc. ASME. ES2014, Volume 2: Economic, Environmental, and Policy Aspects of Alternate Energy; Fuels and Infrastructure, Biofuels and Energy Storage; High Performance Buildings; Solar Buildings, Including Solar Climate Control/Heating/Cooling; Sustainable Cities and Communities, Including Transportation; Thermofluid Analysis of Energy Systems, Including Exergy and Thermoeconomics, V002T04A003, June 30–July 2, 2014
Paper No: ES2014-6387
DOI: https://doi.org/10.1115/ES2014-6387
View Paper
PDF
Topics: Oils, Petroleum, Pyrolysis, Biomass, Bombs, Calorimetry, Feedstock, Fluidized beds, Particle size, Particulate matter
Proceedings Papers

Effect of Condenser Temperature on Pulsating Heat Pipe Performance

Nick Hansen, John VerSteeg, Gregory J. Michna
Proc. ASME. HT2013, Volume 2: Heat Transfer Enhancement for Practical Applications; Heat and Mass Transfer in Fire and Combustion; Heat Transfer in Multiphase Systems; Heat and Mass Transfer in Biotechnology, V002T04A019, July 14–19, 2013
Paper No: HT2013-17457
DOI: https://doi.org/10.1115/HT2013-17457
View Paper
PDF
Topics: Condensers (steam plant), Heat pipes, Temperature, Electrical components, Fluids, Heat, Heat flux, Thermal management, Thermal resistance, Vapor pressure
Proceedings Papers

Operational Temperature Ranges in Pulsating Heat Pipes

Nick Hansen, Gregory J. Michna
Proc. ASME. IMECE2012, Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 1449-1456, November 9–15, 2012
Paper No: IMECE2012-88008
DOI: https://doi.org/10.1115/IMECE2012-88008
View Paper
PDF
Topics: Heat pipes, Temperature, Heat, Computer cooling, Condensers (steam plant), Design, Energy dissipation, Heat sinks, Steady state
Proceedings Papers

Exploration of Experimental Techniques to Determine the Condensation Heat Flux in Microchannels and Minichannels

Melanie M. Derby, Hee Joon Lee, Rose C. Craft, Gregory J. Michna, Yoav Peles, Michael K. Jensen
Proc. ASME. IHTC14, 2010 14th International Heat Transfer Conference, Volume 2, 169-176, August 8–13, 2010
Paper No: IHTC14-22647
DOI: https://doi.org/10.1115/IHTC14-22647
View Paper
PDF
Topics: Condensation, Heat flux, Microchannels, Sensors, Copper, Heat, Heat transfer coefficients, Thermoelectric coolers, Experimental methods, Heat transfer
Proceedings Papers

Study of CHF Condition for Flow Boiling of R134a in Circular Microchannels

Saptarshi Basu, Sidy Ndao, Gregory J. Michna, Yoav Peles, Michael K. Jensen
Proc. ASME. IHTC14, 2010 14th International Heat Transfer Conference, Volume 1, 415-425, August 8–13, 2010
Paper No: IHTC14-22661
DOI: https://doi.org/10.1115/IHTC14-22661
View Paper
PDF
Topics: Boiling, Critical heat flux, Flow (Dynamics), Heart failure, Microchannels, Subcooling, Vapors, Flux (Metallurgy), Pressure
Proceedings Papers

Heat Transfer Characteristics of Flow Boiling of R134a in Uniformly Heated Horizontal Circular Microtubes

Saptarshi Basu, Sidy Ndao, Gregory J. Michna, Yoav Peles, Michael K. Jensen
Proc. ASME. IHTC14, 2010 14th International Heat Transfer Conference, Volume 1, 385-396, August 8–13, 2010
Paper No: IHTC14-22656
DOI: https://doi.org/10.1115/IHTC14-22656
View Paper
PDF
Topics: Boiling, Flow (Dynamics), Heat transfer, Heat transfer coefficients, Flux (Metallurgy), Heat flux, Pressure, Vapors, Errors, Heat
Journal Articles

Flow Boiling of R134a in Circular Microtubes—Part II: Study of Critical Heat Flux Condition

Saptarshi Basu, Sidy Ndao, Gregory J. Michna, Yoav Peles, Michael K. Jensen
Journal: Journal of Heat Transfer
Article Type: Research Papers
J. Heat Transfer. May 2011, 133(5): 051503.
DOI: https://doi.org/10.1115/1.4003160
Published Online: February 3, 2011
View Article
PDF
Topics: Boiling, Critical heat flux, Flow (Dynamics), Subcooling
Journal Articles

Flow Boiling of R134a in Circular Microtubes—Part I: Study of Heat Transfer Characteristics

Saptarshi Basu, Sidy Ndao, Gregory J. Michna, Yoav Peles, Michael K. Jensen
Journal: Journal of Heat Transfer
Article Type: Research Papers
J. Heat Transfer. May 2011, 133(5): 051502.
DOI: https://doi.org/10.1115/1.4003159
Published Online: February 3, 2011
View Article
PDF
Topics: Boiling, Flow (Dynamics), Heat transfer, Heat transfer coefficients, Heat flux, Vapors
Proceedings Papers

Experimental Identification of Component Parameters for Multiple-Evaporator Vapor Compression Refrigeration Cycle

Juan E. Catano, Tiejun Zhang, Rongliang Zhou, Gregory J. Michna, Michael K. Jensen, Yoav Peles, John T. Wen
Proc. ASME. IMECE2009, Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C, 1357-1364, November 13–19, 2009
Paper No: IMECE2009-11778
DOI: https://doi.org/10.1115/IMECE2009-11778
View Paper
PDF
Topics: Compression, Refrigeration cycles, Vapors, Valves, Design, Simulation models, Steady state, Algorithms, Bridges (Structures), Compressors
Proceedings Papers

Experimental Investigation of Area Ratio on Microjet Array Heat Transfer

Gregory J. Michna, Eric A. Browne, Yoav Peles, Michael K. Jensen
Proc. ASME. IMECE2009, Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C, 1407-1414, November 13–19, 2009
Paper No: IMECE2009-12454
DOI: https://doi.org/10.1115/IMECE2009-12454
View Paper
PDF
Topics: Heat transfer, Fluids, Flux (Metallurgy), Heat, Computer cooling, Convection, Cooling, Electronics, Energy consumption, Heat sinks