Gregory Nellis William A. and Irene Ouweneel-Bascom Professor Department Mechanical Engineering Contact 1339, Engineering Research Building 1500 Engineering Dr Madison, WI p: (608) 265-6626 e: gfnellis@engr.wisc.edu Professor Gregory F. Nellis, Mechanical Engineering, University of Wisconsin-Madison Close Video Education PhD 1997, Massachusetts Institute of TechnologyMS 1995, Massachusetts Institute of TechnologyBS 1992, Univ. of Wisconsin-Madison Additional College of Engineering affiliations Affiliated DepartmentsNuclear Engineering & Engineering Physics Awards 2023 NURETH-20 Conference, Best Paper Award2023 Pi Tau Sigma, Distinguished Professor of Mechanical Engineering Award2020 International Cryocoolers Conference, Best Student Paper Award2020 Pi Tau Sigma , Distinguished Professor of Mechanical Engineering Award2018 ASHRAE Conference, Crosby Field Award2018 Pi Tau Sigma , Distinguished Professor of Mechanical Engineering Award2017 University of Wisconsin-Madison, Ouweneel-Bascom Chaired Professorship2016 Pi Tau Sigma, Distinguished Professor of Mechanical Engineering Award2013 American Society of Heating, Refrigeration, and Air-Conditioning Engineers, Fellow2013 Polygon Engineering Council, College of Engineering, University of Wisconsin-Madison, Outstanding Professor of Mechanical Engineering Award:2012 Pi Tau Sigma, Distinguished Professor of Mechanical Engineering Award2011 Cryogenic Engineering Conference, Student Meritorious Paper Award2010 University of Wisconsin-Madison, Kaiser Chaired Professorship2009 Pi Tau Sigma , Distinguished Professor of Mechanical Engineering Award2008 College of Engineering, University of Wisconsin-Madison, James G. Woodburn Award for Excellence in Teaching2008 Cryogenic Society of America, R.W. Boom Award2007 Cryogenic Engineering Conference, Best Student Paper Award2007 Polygon Engineering Council, College of Engineering, University of Wisconsin-Madison, Outstanding Professor of Mechanical Engineering Award2006 Symposium on Photomask and NGL Mask Technology XIII, Invited Talk2006 European Mask Conference, Best Paper Award2006 Pi Tau Sigma , Distinguished Professor of Mechanical Engineering Award2005 Cryogenics, 2005 Annual Best Paper Award2005 University Bookstore, Academic Excellence Award2004 European Mask Conference, Best Paper Award2004 University of Wisconsin-Madison, Wisconsin/Hilldale Undergraduate Faculty/Research Award2003 Electron, Ion, and Photon Beam Technology and Nanofabrication Conference, Best Paper Award2003 Cryogenic Engineering Conference, Best Student Paper Award2003 SRC/DARPA Nanolithography Review, Best Student Presentation1999 Space Cryogenics Workshop, Best Paper Award1993 National Science Foundation, NSF Graduate Fellowship Recent publications Nellis, G., Anderson, M., Jentz, P. I., Foster, S. C., Tillman, E., & others, (2024). Cost Reduction for Advanced Integration Heat Exchanger Technology for Microreactors.Grotjan, A., Nellis, G., & Anderson, M. (2024). Design of a High-Temperature Test Facility for an Additive Manufactured Supercritical Carbon Dioxide Turbine. In The 8th International Supercritical CO2 Power Cycles Symposium.Morse, R. W., Chan, J., Hurlburt, E. T., Le Corre, J., Berson, Argantha"el,, Nellis, G., & Dressler, K. M. (2024). A new paradigm for the role of disturbance waves on film dryout and wall heat transfer in annular two-phase flow. International Journal of Heat and Mass Transfer, 219, 124812.Dyreby, J., Shumaker, J., Schaefer, K. E., Corey, J., Carroll, J. J., Chiara, C. J., & Nellis, G. (2024). Assessment of the integration of a switched nuclear isomer material with a kinematic Stirling engine. Applied Thermal Engineering, 236, 121708.Colgan, N., Nellis, G., & Anderson, M. (2024). Experimental measurement of the pressure drop and heat transfer characteristics of a crossflow heat exchanger in low-density flows. International Journal of Heat and Mass Transfer, 219, 124782.Chan, J., Morse, R. W., Meissner, M. A., Dressler, K. M., Hurlburt, E. T., Nellis, G., & Berson, Argantha"el, (2024). Liquid film flow rate from measurements of disturbance wave characteristics for applications in thin film flow. Experiments in Fluids, 65(6), 93.Valois, J., Nellis, G., & Pfotenhauer, J. (2024). Measurement of Thermal Contact Resistance and the Design of Thermal Contacts at Cryogenic Temperature. Cryogenics, 142, 103922.Colgan, N., Nellis, G., & Anderson, M. (2024). Modelling and optimization of a forced convection heat exchanger for Mars waste heat rejection for power cycle and cryocooling applications. Applied Thermal Engineering, 242, 122463.Prussack, B., Jentz, I., Moreira, T. A., Woolstenhulme, N., Jesse, C., Nellis, G., & Anderson, M. (2024). Thermal and hydraulic performance of volumetrically heated triply periodic minimal surface heaters. Applied Thermal Engineering, 248, 123291.Sun, S., Rankouhi, B., Thoma, D. J., Cheadle, M. J., Maples, G. D., Anderson, M. H., Nellis, G., & Qian, X. (2024). Topology optimization, additive manufacturing and thermohydraulic testing of heat sinks. International Journal of Heat and Mass Transfer, 224, 125281. Courses ME 361 - Thermodynamics (Fall 2025)ME 364 - Elementary Heat Transfer (Fall 2025)ME 489 - Honors in Research (Fall 2025)ME 491 - Mechanical Engineering Projects I (Fall 2025)ME 699 - Advanced Independent Study (Fall 2025)ME 764 - Advanced Heat Transfer I-Conduction (Fall 2025)ME 790 - Master's Research and Thesis (Fall 2025)ME 890 - PhD Research and Thesis (Fall 2025)ME 990 - Dissertator Research and Thesis (Fall 2025)EMA 201 - Statics (Summer 2025)ME 201 - Introduction to Mechanical Engineering (Summer 2025)ME 361 - Thermodynamics (Summer 2025)ME 489 - Honors in Research (Summer 2025)ME 491 - Mechanical Engineering Projects I (Summer 2025)ME 492 - Mechanical Engineering Projects II (Summer 2025)ME 699 - Advanced Independent Study (Summer 2025)ME 764 - Advanced Heat Transfer I-Conduction (Summer 2025)ME 790 - Master's Research and Thesis (Summer 2025)ME 890 - PhD Research and Thesis (Summer 2025)ME 990 - Dissertator Research and Thesis (Summer 2025)ME 352 - Interdisciplinary Experiential Design Projects II (Spring 2025)ME 361 - Thermodynamics (Spring 2025)ME 764 - Advanced Heat Transfer I-Conduction (Spring 2025)ME 790 - Master's Research and Thesis (Spring 2025)ME 890 - PhD Research and Thesis (Spring 2025)ME 351 - Interdisciplinary Experiential Design Projects I (Fall 2024)ME 361 - Thermodynamics (Fall 2024)ME 489 - Honors in Research (Fall 2024)ME 790 - Master's Research and Thesis (Fall 2024)ME 890 - PhD Research and Thesis (Fall 2024)ME 201 - Introduction to Mechanical Engineering (Summer 2024)ME 764 - Advanced Heat Transfer I-Conduction (Summer 2024)ME 790 - Master's Research and Thesis (Summer 2024)ME 890 - PhD Research and Thesis (Summer 2024)ME 352 - Interdisciplinary Experiential Design Projects II (Spring 2024)ME 489 - Honors in Research (Spring 2024)ME 564 - Heat Transfer (Spring 2024)ME 764 - Advanced Heat Transfer I-Conduction (Spring 2024)ME 790 - Master's Research and Thesis (Spring 2024)ME 890 - PhD Research and Thesis (Spring 2024)ME 201 - Introduction to Mechanical Engineering (Fall 2023)ME 351 - Interdisciplinary Experiential Design Projects I (Fall 2023)ME 352 - Interdisciplinary Experiential Design Projects II (Fall 2023)ME 790 - Master's Research and Thesis (Fall 2023)ME 890 - PhD Research and Thesis (Fall 2023)ME 990 - Dissertator Research and Thesis (Fall 2023)