Index Catalog // ScholarsArchive@OSU

Analysis of iteration schemes for deterministic transport in binary Markovian mixtures

Creator:: Ching, Brenton S.
Abstract:: The Adams-Larsen-Pomraning coupled transport model has been used to describe neutral particle transport in binary stochastic mixtures. Here, the mixing statistics are considered to be homogeneous Markovian processes. While the model is robust, the convergence behavior and efficiency of this coupled model have not been addressed. Countless iterative methods could...
Resource Type:: Masters Thesis
Full Text:: binary Markovian mixtures AN ABSTRACT OF THE THESIS OF Brenton S. Ching for the degree of Master of

A "mildly inconsistent" method for accelerating upstream corner balance transport

Creator:: Gulick, John C.
Abstract:: A new method for accelerating the Upstream Corner Balance (UCB) discretization of the equation of transfer is introduced. The inconsistent acceleration equations for the UCB discretization are derived by applying the "Modified 4-Step" diffusion synthetic acceleration technique not to the UCB discretization, but instead to the simple corner balance (SCB)...
Resource Type:: Masters Thesis
Full Text:: Accelerating Upstream Corner Balance Transport. Abstract approved: Todd S. Palmer A new method for

Coarse mesh and one-cell block inversion based diffusion synthetic acceleration

Creator:: Kim, Kang-Seog
Abstract:: DSA (Diffusion Synthetic Acceleration) has been developed to accelerate the SN transport iteration. We have developed solution techniques for the diffusion equations of FLBLD (Fully Lumped Bilinear Discontinuous), SCB (Simple Corner Balance) and UCB (Upstream Corner Balance) modified 4-step DSA in x-y geometry. Our first multi-level method includes a block...
Resource Type:: Dissertation
Full Text:: The research was performed under the contract with Lawrence Livermore National Laboratory. I would

Advanced Deterministic Phonon Transport Techniques for Predicting Spectral Thermal Conductivity in Homogeneous and Heterogeneous Media

Creator:: Harter, Jackson R.
Abstract:: We present a deterministic spectral method to predict equilibrium temperature distributions, heat flux, and thermal conductivity in homogeneous and heterogeneous media. We solve the Boltzmann transport equation in a second order spatial, self-adjoint angular flux formulation. We implemented this method into the radiation transport code Rattlesnake, built using the MOOSE...
Resource Type:: Dissertation
Full Text:: Heterogeneous Media Abstract approved: Todd S. Palmer We present a deterministic spectral method to predict

Assessing the Quality of Three Dimensional Simplified Spherical Harmonic (SPN) Radiation Transport Solutions to Source Detector Problems

Creator:: Patel, Japan K.
Abstract:: The research objective is to assess the performance of the SPN transport method, with a traditional finite volume spatial discretization in Cartesian geometry, on source detector problems relevant to urban detonation of an improvised nuclear device. In particular, we observe the character of the solution as a function of the...
Resource Type:: Honors College Thesis
Full Text:: . I am very grateful to Dr. Andrew Klein and Mr. S. Todd Keller for agreeing to be on the thesis

Solution of the 2D quasi-diffusion low-order equations using a coupled nodal/finite volume discretization in Cartesian and hexagonal geometry

Creator:: Nes, Razvan
Abstract:: An important improvement in the area of reactor core neutronic modeling is the development and use of the methods based on "quasi-diffusion" (QD) low-order equations. This family of methods takes into account the transport exactly using "functionals" computed by solving transport equations, and is amenable to solution with a variety...
Resource Type:: Dissertation
Full Text:: :____________________________________________________ Todd S. Palmer An important improvement in the area of reactor core neutronic modeling is the

Development of a binary mixture gas composition instrument for use in a confined high temperature environment

Creator:: Cadell, Seth R.
Abstract:: With recent advancements in material science, industrial operations are being conducted at higher and higher temperatures. This is apparent in the nuclear industry where a division of the field is working to develop the High Temperature Gas Reactor and the Very High Temperature Gas Reactor concurrently. Both of these facilities...
Resource Type:: Dissertation
Full Text:: to a study conducted by Lawrence Livermore National Laboratory, the US consumed 94.6 Quads1 of

Monte Carlo model of a capture gamma ray analyzer for a seafloor core sample

Creator:: Almasoumi, Abdullah Muhammad Sultan
Abstract:: Of great benefit, but not limited to seafloor mineral exploration, is a technique that fairly rapidly determines the composition of a drilled vibracore (in a time comparable to the time involved in obtaining the core). The rapid assessment is desired to predict whether a given region warrants further exploration by...
Resource Type:: Dissertation
Full Text:: extended to the members of my Advisory Committee: Drs. Simon S. Johnson, Andrew C. Klein, John C. Ringle

Balanced codes

Creator:: Al-Bassam, Sulaiman
Abstract:: Balanced codes, in which each codeword contains equally many 1's and 0's, are useful in such applications as in optical transmission and optical recording. When balanced codes are used, the same number of 1's and 0's pass through the channel after the transmission of every word, so the channel is...
Resource Type:: Dissertation
Full Text:: contains equally many l's and 0's, are useful in such applications as in optical transmission and optical

Application of the gamma pathway exemption rule for naturally occurring radioactive materials in industrial waste using ISOSHLD-II

Creator:: Bahmaid, Mohammad A.
Resource Type:: Masters Thesis
Full Text:: studies. A special thanks is extended to the members of my committee, Dr. Andrew Klein, Dr. Albert

ScholarsArchive@OSU

Analysis of iteration schemes for deterministic transport in binary Markovian mixtures

A "mildly inconsistent" method for accelerating upstream corner balance transport

Coarse mesh and one-cell block inversion based diffusion synthetic acceleration

Advanced Deterministic Phonon Transport Techniques for Predicting Spectral Thermal Conductivity in Homogeneous and Heterogeneous Media

Assessing the Quality of Three Dimensional Simplified Spherical Harmonic (SPN) Radiation Transport Solutions to Source Detector Problems

Solution of the 2D quasi-diffusion low-order equations using a coupled nodal/finite volume discretization in Cartesian and hexagonal geometry

Development of a binary mixture gas composition instrument for use in a confined high temperature environment

Monte Carlo model of a capture gamma ray analyzer for a seafloor core sample

Balanced codes

Application of the gamma pathway exemption rule for naturally occurring radioactive materials in industrial waste using ISOSHLD-II

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