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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Jun 2025
Jan 2025
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Nuclear Science and Engineering
July 2025
Nuclear Technology
Fusion Science and Technology
Latest News
Smarter waste strategies: Helping deliver on the promise of advanced nuclear
At COP28, held in Dubai in 2023, a clear consensus emerged: Nuclear energy must be a cornerstone of the global clean energy transition. With electricity demand projected to soar as we decarbonize not just power but also industry, transport, and heat, the case for new nuclear is compelling. More than 20 countries committed to tripling global nuclear capacity by 2050. In the United States alone, the Department of Energy forecasts that the country’s current nuclear capacity could more than triple, adding 200 GW of new nuclear to the existing 95 GW by mid-century.
Technical Session|Nuclear Thermal Propulsion
Tuesday, May 7, 2024|1:00–2:40PM MDT|Sweeney B
Session Chair:
Minghui Chen (University of New Mexico)
Alternate Chair:
Katey Lenox (INL)
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Influence of Stoichiometry on Zirconium Oxycarbides (ZrCxOy) Exposed to Hot Flowing Hydrogen
1:00–1:06PM MDT
Martin Volz (NASA Marshall Space Flight Center), Jamelle K. P. Williams (NASA Marshall Space Flight Center), Arne Croell (Univ. Alabama, Huntsville), J. Reynolds (Univ. South Carolina), Brian Taylor (NASA Marshall Space Flight Center), Jhonathan Rosales (Univ. Florida), E. Kardoulaki (LANL), K. J. McClellan (LANL)
Paper
Specific Heat Capacity Measurement of Bi-Carbide Fuels for Nuclear Thermal Propulsion
1:06–1:12PM MDT
Jason Reynolds (NASA Marshall Space Flight Center), Jhonathan Rosales (NASA Marshall Space Flight Center), Martin Volz (NASA Marshall Space Flight Center), Brian Taylor (NASA Marshall Space Flight Center), Jamelle K. P. Williams (NASA Marshall Space Flight Center), Arne Cröll (Univ. Alabama, Hunstville), Travis Knight (Univ. South Carolina), Theodore Besmann (Univ. South Carolina), Juliano Schorne-Pinto (Univ. South Carolina), Ronald Booth (Univ. South Carolina), Matt Phipps (Univ. South Carolina), Robert Demuth (Univ. South Carolina)
Sintering Behavior of TiC with ZrC, NbC, and TaC for use in Nuclear Thermal Propulsion Uranium Carbide Fuel
1:12–1:18PM MDT
Luke Hansen (Univ. Tennessee, Knoxville), Ethan Payne (Univ. Tennessee, Knoxville), Brandon Shaver (Univ. Tennessee, Knoxville), Justin Milner (NASA Glenn Research Center), Steven Zinkle (Univ. Tennessee, Knoxville)
Mass Loss of Mixed Uranium Carbides in Hot Hydrogen I: The Influence of Composition and Density
1:18–1:24PM MDT
Jamelle K. P. Williams (NASA Marshall Space Flight Center), Arne Cröll (Univ. Alabama, Hunstville), Jason Reynolds (NASA Marshall Space Flight Center), Martin P. Volz (NASA Marshall Space Flight Center), Brian D. Taylor (NASA Marshall Space Flight Center), Erofili Kardoulaki (LANL), Ken J. McClellan (LANL), Jhonathan Rosales (NASA Marshall Space Flight Center)
Mass Loss of Mixed Uranium Carbides in Hot Hydrogen II: The Influence of Additional Carbon
1:24–1:30PM MDT
Arne Cröll (Univ. Alabama, Hunstville), Jamelle K. P. Williams (NASA Marshall Space Flight Center), Jason Reynolds (Univ. South Carolina), Martin P. Volz (NASA Marshall Space Flight Center), Brian D. Taylor (NASA Marshall Space Flight Center), Erofili Kardoulaki (LANL), Kenneth J. McClellan (LANL), Jhonathan Rosales (Univ. Florida)
Analysis of Homogenization and Solute Interdiffusion Kinetics of ZrC, NbC, TaC Refractory Carbides as Surrogate Fuels for Nuclear Thermal Propulsion Systems
1:30–1:36PM MDT
Alexander Nadermann (Univ. Tennessee, Knoxville), Jonas Kessing (Univ. Tennessee, Knoxville), Brandon Shaver (Univ. Tennessee, Knoxville), Justin Milner (NASA Glenn Research Center), Steven J. Zinkle (Univ. Tennessee, Knoxville)
Presentation Slides (Visible to Attendees)
Hot Hydrogen Testing of ZrC, NbC, TaC, and (Zr, Nb, Ta)C Tricarbide to Simulate the Environment of Nuclear Thermal Propulsion
1:36–1:42PM MDT
Ethan Payne (Univ. Tennessee, Knoxville), Luke Hansen (Univ. Tennessee, Knoxville), Brandon Shaver (Univ. Tennessee, Knoxville), Ronald Booth (Univ. South Carolina), Theodore Besmann (Univ. South Carolina), Justin Milner (NASA Glenn Research Center), Steven Zinkle (Univ. Tennessee, Knoxville)
Grain Growth and Hardness of ZrC, NbC, and TaC Tri-Carbide Surrogate Fuels for Nuclear Thermal Propulsion
1:42–1:48PM MDT
Jonas R. Kessing (Univ. Tennessee, Knoxville), Alexander T. Nadermann (Univ. Tennessee, Knoxville), Brandon Shaver (Univ. Tennessee, Knoxville), Justin Milner (NASA Glenn Research Center), Steven J. Zinkle (Univ. Tennessee, Knoxville)
Manufacturing Progress of USNC NTP Prismatic Fuel
1:48–1:54PM MDT
Neal Gaffin (Ultra Safe Nuclear), Brian Ade (Ultra Safe Nuclear)
Hot Hydrogen Testing of USNC CFEET Minifuel Elements
1:54–2:00PM MDT
Investigation of the Optimum Cooling Channel Spacing in Surrogate Fuel for Space Nuclear Propulsion
2:00–2:06PM MDT
Jhonathan Rosales (NASA Marshall Space Flight Center), Jason Reynolds (NASA Marshall Space Flight Center), Jamelle K. P. Williams (NASA Marshall Space Flight Center), Arne Croell (Univ. Alabama, Huntsville), Brian Taylor (NASA Marshall Space Flight Center), Martin Volz (NASA Marshall Space Flight Center)
Establishing Radiological Spark Plasma Sintering Capabilities for Nuclear Thermal Propulsion Fuel Research
2:06–2:12PM MDT
Brandon Shaver (Univ. Tennessee, Knoxville), Steven J. Zinkle (Univ. Tennessee, Knoxville)
ALUMNI Project: Conceptual Design Options of a NTP Engine and Performance Comparison with LOX/LH2 Engine on Mars Use Cases
2:12–2:18PM MDT
Frédéric Bertrand (CEA), Pierre Sciora (CEA), Valérie Brun-Magaud (CEA), Gédéon Mauger (CEA), Eric Proust (CEA), Michel Schlegel (CEA), Fabrice Jacquet (Arianegroup), Jean-Luc Dumont (Arianegroup), Nicolas Guezennec (Arianegroup), Lea Wullschleger (Arianegroup), Valère Girardin (ESA)
Identification of I&C Components for Fission Surface Power Technology Maturation
2:18–2:24PM MDT
Pattrick Calderoni (INL)
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