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• Heat and mass transfer
• Convective heat transfer
• Electronics cooling
• Thermodynamics

• 2018, Timothy J. Nichols Undergraduate Advising Award, ��«Ӱҵ.
• 2017, Students’ Choice Award (Teacher of the Year), Department of Mechanical Engineering, ��«Ӱҵ.
• 2015, Jerome J. Lohr College of Engineering Teacher of the Year, ��«Ӱҵ.
• 2012, Outstanding Reviewer, ASME Journal of Heat Transfer.
• 2012, Students’ Choice Award (Teacher of the Year), Department of Mechanical Engineering, ��«Ӱҵ.
• 2010, Students’ Choice Award (Teacher of the Year), Department of Mechanical Engineering, ��«Ӱҵ.

• Gregory J. Michna (PI) and Stephen Gent (Co-PI), “CFD Analysis of Fluid, Heat, and Impurity Flows in DUNE FAR Detector to Address Additional Design Considerations – Phase 4,” Fermi National Accelerator Laboratory (FNAL), 2021, $244,079.
• Todd Letcher (PI) and Gregory J. Michna (Co-PI), “In-Situ Resource Utilization NASA Design Challenges,” South Dakota Space Grant Consortium (SDSGC), 2021, $140,213.
• Gregory J. Michna (PI) and Stephen Gent (Co-PI), “CFD Analysis of Fluid, Heat, and Impurity Flows in DUNE FAR Detector to Address Additional Design Considerations – Phase 3,” Fermi National Accelerator Laboratory (FNAL), 2019, $137,597.
• Gregory J. Michna (PI) and Stephen P. Gent (Co-PI), “CFD Analysis of Fluid, Heat, and Impurity Flows in DUNE FAR Detector to Address Additional Design Considerations – Phase 2,” Fermi National Accelerator Laboratory (FNAL), 2018, $109,445.
• Gregory J. Michna (PI) and Todd M. Letcher (Co-PI), “Startup of ��«Ӱҵ CubeSat Club,” South Dakota Space Grant Consortium (SDSGC), 2017, $10,007.
• Todd M. Letcher (PI) and Gregory J. Michna (Co-PI), “Advanced Materials for 3D Printable Heat Exchangers,” South Dakota Space Grant Consortium (SDSGC), 2017, $11,658.
• Todd Letcher (PI) and Gregory J. Michna (Co-PI), “3D Printable Heat Exchangers to Enhance Student Learning Related to Space Science,” South Dakota Space Grant Consortium, 2016, $80,766. 
• Gregory J. Michna (PI), and Stephen P. Gent (Co-PI), “Further CFD Analysis of Fluid, Heat, and Impurity Flows in DUNE FAR Detector,” Fermi National Accelerator Laboratory (FNAL) – Deep Underground Neutrino Experiment (DUNE), 2016, $49,955. 
• Stephen Gent (PI) and Gregory J. Michna (Co-PI), “Bio-Oils from Oilseed Byproduct Feedstock,” North Central Regional Sun Grant Center (U.S. Department of Transportation), 2013, $187,500.
• Gregory J. Michna (PI), “Toward Realization of Pulsating Heat Pipe Electronics Cooling Systems,” South Dakota Board of Regents Competitive Research Grant Program, 2013, $99,118.

Journal Publications

1. 2011, Michna, G. J., Browne, E. A., Peles, Y., and Jensen, M. K., “The Effect of Area Ratio on Microjet Array Heat Transfer,” International Journal of Heat and Mass Transfer, 54(9-10), pp. 1782-1790.
2. 2010, Browne, E. A., Michna, G. J., Jensen, M. K., and Peles, Y., “Microjet Array Single-Phase and Flow Boiling Heat Transfer with R134a,” International Journal of Heat and Mass Transfer, 53(22-23), pp. 5027-5034.
3. 2010, Browne, E. A., Michna, G. J., Jensen, M. K., and Peles, Y., “Experimental Investigation of Microjet Array Heat Transfer,” Journal of Heat Transfer, 132(4), 041013.
4. 2009, Michna, G. J., Browne, E. A., Peles, Y., and Jensen, M. K., “Single-Phase Microscale Jet Stagnation Point Heat Transfer,” Journal of Heat Transfer, 131(11), 111402.
5. 2007, Michna, G. J., Jacobi, A. M., and Burton, R. L, “An Experimental Study of the Friction Factor and Mass Transfer Performance of an Offset-Strip Fin Array at Very High Reynolds Numbers,” Journal of Heat Transfer, 129(9), pp. 1134-1140.

Conference Publications

1. 2019, Pereira, L., Letcher, T., and Michna, G. J., “The Effects of 3D Printing Parameters and Surface Roughness on Convective Heat Transfer Performance,” Proceedings of the 2019 ASME Summer Heat Transfer Conference, 15-18 July, 2019, Bellevue, Washington, USA.
2. 2019, Raslan, A., Michna, G., and Ciarcia, M., “Thermal Simulation of a CubeSat,” Proceedings of the 19th Annual IEEE International Conference on Electro Information Technology (EIT2019), 20-22 May, 2019, Brookings, South Dakota, USA.
3. 2018, Michna, G. J. and Letcher, T., “Designing 3-D Printed Heat Exchangers in a Senior-level Thermal Systems Course,” Proceedings of the 2018 ASEE Annual Conference and Exposition, 24-27 June, 2018, Salt Lake City, Utah, USA.
4. 2018, Letcher, T., Michna, G. J., VerSteeg, J. D., and Michna, S. M., “Stimulating Interest in First-Year Mechanical Engineering Students through Design Modeling/Analysis and CNC Manufacturing,” Proceedings of the 2018 ASEE Annual Conference and Exposition, 24-27 June, 2018, Salt Lake City, Utah, USA.
5. 2016, Hoesing, M. P. and Michna, G. J., “Oscillating Heat Pipe Performance with Modified Evaporator Geometries,” ICNMM2016-7980, Proceedings of the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, 10-14 July, 2016, Washington, DC, USA.