A multi-region computer model for predicting nuclear excursions in aqueous homogeneous solution assemblies.

Persistent Link:
http://hdl.handle.net/10150/186402
Title:
A multi-region computer model for predicting nuclear excursions in aqueous homogeneous solution assemblies.
Author:
Kimpland, Robert Herbert.
Issue Date:
1993
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Fissile materials in the form of aqueous homogeneous solutions are used during the chemical processing of nuclear fuel. In this form there exists the possibility of an accidental criticality of the solution. To determine the consequences of such accidents, computer models have been developed to simulate nuclear excursions. A one-region model and a multi-region model have been developed to simulate both power and pressure pulses. These models include a new radiolytic gas production model that tracks the number of radiolytic gas bubbles produced during an excursion. Also, an equation of state, which accounts for the production of inertial pressure due to a "lag" in thermal expansion and the creation of radiolytic gas bubbles, has been developed for both models. The multi-region model can account for the spatial distribution of the nuclear energy deposited in the solution and both axial and radial acceleration of the fuel material caused by the production of inertial pressure. Predicted power and pressure pulses have been compared with experimental data from the KEWB, CRAC, and SILENE experiments. The computer models have been very successful in predicting the magnitude of both power and pressure pulses. Also, the multi-region model has provided new information on the spatial distribution of solution parameters during an excursion.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Dissertations, Academic.; Nuclear engineering.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Nuclear and Energy Engineering; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Hetrick, David L.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleA multi-region computer model for predicting nuclear excursions in aqueous homogeneous solution assemblies.en_US
dc.creatorKimpland, Robert Herbert.en_US
dc.contributor.authorKimpland, Robert Herbert.en_US
dc.date.issued1993en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractFissile materials in the form of aqueous homogeneous solutions are used during the chemical processing of nuclear fuel. In this form there exists the possibility of an accidental criticality of the solution. To determine the consequences of such accidents, computer models have been developed to simulate nuclear excursions. A one-region model and a multi-region model have been developed to simulate both power and pressure pulses. These models include a new radiolytic gas production model that tracks the number of radiolytic gas bubbles produced during an excursion. Also, an equation of state, which accounts for the production of inertial pressure due to a "lag" in thermal expansion and the creation of radiolytic gas bubbles, has been developed for both models. The multi-region model can account for the spatial distribution of the nuclear energy deposited in the solution and both axial and radial acceleration of the fuel material caused by the production of inertial pressure. Predicted power and pressure pulses have been compared with experimental data from the KEWB, CRAC, and SILENE experiments. The computer models have been very successful in predicting the magnitude of both power and pressure pulses. Also, the multi-region model has provided new information on the spatial distribution of solution parameters during an excursion.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectDissertations, Academic.en_US
dc.subjectNuclear engineering.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineNuclear and Energy Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairHetrick, David L.en_US
dc.contributor.committeememberSecker, Jr., Phillip A.en_US
dc.contributor.committeememberFilippone, William L.en_US
dc.identifier.proquest9408478en_US
dc.identifier.oclc720430680en_US
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