Browsing Electronic Theses, Dissertations, and Records of Study (2002– ) by Author "Ragusa, Jean"
Now showing items 1-20 of 30
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Vermaak, Jan Izak Conelius (2022-04-19)The residual Monte Carlo (RMC) method is also known in the literature as sequential Monte Carlo and reduced-source Monte Carlo. Given a Monte Carlo method for solving a linear equation and an approximate solution to that ...
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Clayton, Bennett Giles (2023-05-05)For many physical problems, robust numerical methods for solving the compressible Euler equations are essential. For the Euler equations to accurately describe the fluid behavior a suitable equation of state (EOS), which ...
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Stone, Joseph Carlyle (2009-05-15)The approaches for discretizing the direction variable in particle transport calculations are the discrete-ordinates method and function-expansion methods. Both approaches are limited if the transport solution is not ...
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Lau, Cheuk Yiu (2016-07-27)We present a new family of discrete-ordinates (Sn) angular quadratures based on discontinuous finite elements (DFEM) in angle. The angular domain is divided into spherical quadrilaterals (SQs) on the unit sphere surface. ...
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Hackemack, Michael Wayne (2013-04-15)With the ever-increasing demands of the nuclear power community to extend fuel cycles and overall core-lifetimes in a safe and economic manner, it is becoming more necessary to extend the working knowledge of nuclear fuel ...
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Behne, Patrick Alan (2022-05-25)This work explores the application of data-driven, projection-based, reduced-order models (ROMs) to parametric steady-state, neutral particle, no-fission, source-driven radiation transport. In the offline phase, ROM basis ...
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Peterson, Jacob Ross (2014-04-23)An exponentially-convergent Monte Carlo (ECMC) method is analyzed using the one-group, one-dimension, slab-geometry transport equation. The method is based upon the use of a linear discontinuous finite-element trial space ...
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Vega, Richard Manuel (2019-01-07)The research presented in this document extends the slice balance approach (SBA) for solving the discrete ordinates neutral particle transport equations. The extended slice balance approach (ESBA) formulated here improves ...
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Owen, Justin Ian (2019-09-03)The surface finite element method is an important tool for discretizing and solving elliptic partial differential equations on surfaces. Recently the surface finite element method has been used for computing approximate ...
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First-Collided Source Treatment for Discrete-Ordinate Radiation Transport Solutions in Rattlesnake Harbour, Logan Hunter (2018-11-20)Deterministic neutron transport plays a fundamental role in reactor core modeling and simulation. With the growth of computing, higher fidelity simulation is desired and the most common neutron transport scheme that produces ...
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Hermosillo, Andrew (2021-06-30)Molten Salt Reactors (MSRs) are being researched as possible reactors to be built in the next generation of nuclear reactors. The interest in building these reactors has required improvement in current numerical methods ...
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Moon, Minam (2015-06-05)This dissertation is devoted to the development, study and testing of numerical methods for elliptic and parabolic equations with heterogeneous coefficients. The motivation for this study is to meet the need for fast and ...
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Hua, Yuchen (2019-05-24)In this dissertation we develop high order invariant domain preserving schemes for general hyperbolic systems. The schemes are based on the general central schemes of formally second, third and fourth order accuracy. The ...
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Bolding, Simon Ray (2017-02-14)We have implemented a new high-order low-order (HOLO) algorithm for solving thermal radiative transfer (TRT) problems. Within each discrete time step, fixed-point iterations are performed between a high-order (HO) ...
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Lou, Jijie (2020-04-14)Simulations for obtaining quantities of interest of neutron transport problems need to be accurate and inexpensive. Discretization in energy has been a historical problem due to the resonances. There are two main approaches ...
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Ghaddar, Tarek Habib (2016-04-26)When running any massively parallel code, load balancing is a priority in order to achieve the best possible parallel efficiency. A load balanced problem has an equal num-ber of degrees of freedom per processor. Load balancing ...
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Pandya, Tara M 1984- (2012-10-23)The method of characteristics (MOC) is a deterministic transport method that has been applied to large-scale problems including those in reactor physics and radiative transfer. Long characteristics, (LC) methods, have ...
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Chambers, Alex (2012-10-19)The nuclear waste currently generated in the United States is stored in spent fuel pools and dry casks throughout the country awaiting a permanent disposal solution. One efficient solution would be to remove the actinides ...
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Metcalf, Richard R. (2010-07-14)The comparison of nuclear facilities based on their barriers to nuclear material proliferation has remained a difficult endeavor, often requiring expert elicitation for each system under consideration. However, objectively ...
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Hanophy, Joshua Thomas (2022-04-29)The SN transport equation is popularly used to describe the distribution of neutrons in many applications including nuclear reactors. The topic of this research is a non-linear acceleration method for accelerating convergence ...