A super computer discrete ordinates method without observable ray effects or numerical diffusion

Persistent Link:
http://hdl.handle.net/10150/276911
Title:
A super computer discrete ordinates method without observable ray effects or numerical diffusion
Author:
Monahan, Shean Patrick, 1961-
Issue Date:
1988
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:
A new discrete ordinates method designed for use on modern, large memory, vector and/or parallel processing super computers has been developed. The method is similar to conventional SN techniques in that the medium is divided into spatial mesh cells and that discrete directions are used. However, in place of an approximate differencing scheme, a nearly exact matrix representation of the streaming operator is determined. Although extremely large, this matrix can be stored on today's computers for repeated use in the source iteration. Since the source iteration is cast in matrix form it benefits enormously from vector and/or parallel processing, if available. Several test results are presented demonstrating the reduction in numerical diffusion and elimination of ray effects.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Transport theory -- Discrete ordinates method.; Photons -- Scattering.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Nuclear and Energy Engineering
Degree Grantor:
University of Arizona
Advisor:
Filippone, W. L.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleA super computer discrete ordinates method without observable ray effects or numerical diffusionen_US
dc.creatorMonahan, Shean Patrick, 1961-en_US
dc.contributor.authorMonahan, Shean Patrick, 1961-en_US
dc.date.issued1988en_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.abstractA new discrete ordinates method designed for use on modern, large memory, vector and/or parallel processing super computers has been developed. The method is similar to conventional SN techniques in that the medium is divided into spatial mesh cells and that discrete directions are used. However, in place of an approximate differencing scheme, a nearly exact matrix representation of the streaming operator is determined. Although extremely large, this matrix can be stored on today's computers for repeated use in the source iteration. Since the source iteration is cast in matrix form it benefits enormously from vector and/or parallel processing, if available. Several test results are presented demonstrating the reduction in numerical diffusion and elimination of ray effects.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectTransport theory -- Discrete ordinates method.en_US
dc.subjectPhotons -- Scattering.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineNuclear and Energy Engineeringen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorFilippone, W. L.en_US
dc.identifier.proquest1335834en_US
dc.identifier.oclc22227736en_US
dc.identifier.bibrecord.b17381563en_US
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