Methodology for Coupled Reactor Physics, Thermal Hydraulics, and Depletion of a Fluoride Salt-Cooled High-Temperature Reactor (FHR)

dc.contributor.advisor Petrovic, Bojan
dc.contributor.author Ramey, Kyle Michael
dc.contributor.committeeMember Zhang, Dingking
dc.contributor.committeeMember Kotlyar, Dan
dc.contributor.committeeMember Maldonado, Ivan
dc.contributor.committeeMember Grgic, Davor
dc.contributor.department Mechanical Engineering
dc.date.accessioned 2021-09-15T15:40:30Z
dc.date.available 2021-09-15T15:40:30Z
dc.date.created 2021-08
dc.date.issued 2021-05-01
dc.date.submitted August 2021
dc.date.updated 2021-09-15T15:40:30Z
dc.description.abstract Recent work on new nuclear reactors has focused on Generation IV designs, which includes molten salt technologies. One type of molten salt reactor with a solid fuel form is a fluoride salt-cooled high-temperature reactor. A prismatic fuel design of this type is the Advanced High Temperature Reactor (AHTR). AHTR uses hexagonal fuel assemblies that contain fuel plates embedded with TRISO fuel particles. The geometry of the AHTR fuel assembly is complex to model, so many previous studies have used simplifications to make simulations more feasible. This work created a parameterized multiphysics framework of the 3D AHTR core to allow for both ease of design change and detail in simulations, all while remaining practical using typically available computational resources. Detailed simulations were executed using the Monte Carlo code Serpent with key features including criticality search, depletion, and multiphysics capabilities coupling neutronics with materials property changes (thermal expansion and heat conduction) and thermal hydraulics. These areas were incorporated into a novel AHTR-specific framework called ATOMICS, which was used to conduct several sensitivity studies and depletion simulations. Results demonstrated the impact of model refinements made possible by ATOMICS as well as provided information for potential future design changes made to AHTR. Despite AHTR being a large system susceptible to spatial numerical instabilities, the depletion processes used by ATOMICS were shown to be mostly numerical stable for the cases considered when appropriate methods and options were used. ATOMICS is a practical and flexible tool enabling realistic analysis of AHTR for statepoint and depletion simulations on conventional computing environments.
dc.description.degree Ph.D.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/65013
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Multiphysics
dc.subject Reactor modeling
dc.subject Neutronics
dc.subject Thermal hydraulics
dc.title Methodology for Coupled Reactor Physics, Thermal Hydraulics, and Depletion of a Fluoride Salt-Cooled High-Temperature Reactor (FHR)
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Petrovic, Bojan
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 0f37df6e-3498-4ce4-96d4-6df34e533f87
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level Doctoral
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