Implementation and Verification of the Subgroup Decomposition Method in the TITAN 3-D Deterministic Radiation Transport Code

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dc.contributor.authorRoskoff, Nathan J.en
dc.contributor.committeechairHaghighat, Alirezaen
dc.contributor.committeememberPierson, Marken
dc.contributor.committeememberWinfrey, Leighen
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2017-06-13T19:44:08Zen
dc.date.adate2014-06-04en
dc.date.available2017-06-13T19:44:08Zen
dc.date.issued2014-05-07en
dc.date.rdate2014-06-04en
dc.date.sdate2014-05-19en
dc.description.abstractThe subgroup decomposition method (SDM) has recently been developed as an improvement over the consistent generalized energy condensation theory for treatment of the energy variable in deterministic particle transport problems. By explicitly preserving reaction rates of the fine-group energy structure, the SDM directly couples a consistent coarse-group transport calculation with a set of fixed-source "decomposition sweeps" to provide a fine-group flux spectrum. This paper will outline the implementation of the SDM into the three-dimensional, discrete ordinates (SN) deterministic transport code TITAN. The new version of TITAN, TITAN-SDM, is tested using 1-D and 2-D benchmark problems based on the Japanese designed High Temperature Engineering Test Reactor (HTTR). In addition to accuracy, this study examines the efficiency of the SDM algorithm in a 3-D SN transport code.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05192014-134201en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05192014-134201/en
dc.identifier.urihttp://hdl.handle.net/10919/78127en
dc.language.isoen_USen
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectenergy condensationen
dc.subjectsubgroup decomposition methoden
dc.subjectmultigroup transporten
dc.subjectneutron transport theoryen
dc.titleImplementation and Verification of the Subgroup Decomposition Method in the TITAN 3-D Deterministic Radiation Transport Codeen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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