Hybrid Sn/Diffusion and Sn/P3 Neutronics Calculations

Hybrid Sn/Diffusion and Sn/P3 Neutronics Calculations

In this thesis we investigate coupling and preconditioning techniques for 19D hybrid neutronics calculations. Each problem is represented by two spatial regions with Sn in one region and either Diffusion (P1) or P3 in the other region. For each of these two cases we define one coupling scheme and tw...

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Bibliographic Details
Main Author: Manolov, Sergiy
Other Authors: Morel, Jim E
Format: Others
Published: 2013
Subjects:
Sn
Pn
Diffusion
Neutron Transport
Krylov
Hybrid Calculations
Online Access:http://hdl.handle.net/1969.1/149272
id ndltd-tamu.edu-oai-repository.tamu.edu-1969.1-149272
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spelling ndltd-tamu.edu-oai-repository.tamu.edu-1969.1-1492722013-10-04T04:55:02ZHybrid Sn/Diffusion and Sn/P3 Neutronics CalculationsManolov, SergiySnPnDiffusionNeutron TransportKrylovHybrid CalculationsIn this thesis we investigate coupling and preconditioning techniques for 19D hybrid neutronics calculations. Each problem is represented by two spatial regions with Sn in one region and either Diffusion (P1) or P3 in the other region. For each of these two cases we define one coupling scheme and two different preconditioned systems. These systems are solved with both fixed9point iteration and the GMRES Krylov method. The solution techniques are compared in terms of iteration count and computational cost. Preconditioning with a global diffusion operator is found to be very effective for the most difficult problems.Morel, Jim EAdams, Marvin LRagusa, Jean CLazarov, Raytcho2013-10-02T21:27:47Z2013-10-02T21:27:47Z2013-052013-03-14May 20132013-10-02T21:27:47ZThesistextapplication/pdfhttp://hdl.handle.net/1969.1/149272
collection NDLTD
format Others
sources NDLTD
topic Sn
Pn
Diffusion
Neutron Transport
Krylov
Hybrid Calculations
spellingShingle Sn
Pn
Diffusion
Neutron Transport
Krylov
Hybrid Calculations
Manolov, Sergiy
Hybrid Sn/Diffusion and Sn/P3 Neutronics Calculations
description In this thesis we investigate coupling and preconditioning techniques for 19D hybrid neutronics calculations. Each problem is represented by two spatial regions with Sn in one region and either Diffusion (P1) or P3 in the other region. For each of these two cases we define one coupling scheme and two different preconditioned systems. These systems are solved with both fixed9point iteration and the GMRES Krylov method. The solution techniques are compared in terms of iteration count and computational cost. Preconditioning with a global diffusion operator is found to be very effective for the most difficult problems.
author2 Morel, Jim E
author_facet Morel, Jim E
Manolov, Sergiy
author Manolov, Sergiy
author_sort Manolov, Sergiy
title Hybrid Sn/Diffusion and Sn/P3 Neutronics Calculations
title_short Hybrid Sn/Diffusion and Sn/P3 Neutronics Calculations
title_full Hybrid Sn/Diffusion and Sn/P3 Neutronics Calculations
title_fullStr Hybrid Sn/Diffusion and Sn/P3 Neutronics Calculations
title_full_unstemmed Hybrid Sn/Diffusion and Sn/P3 Neutronics Calculations
title_sort hybrid sn/diffusion and sn/p3 neutronics calculations
publishDate 2013
url http://hdl.handle.net/1969.1/149272
work_keys_str_mv AT manolovsergiy hybridsndiffusionandsnp3neutronicscalculations
_version_ 1716603953360142336

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