Zobrazeno 1 - 10
of 261
pro vyhledávání: '"McClarren, Ryan G."'
Autor:
Krief, Menahem, McClarren, Ryan G.
We present a systematic study of the similarity solutions for the Marshak wave problem, in the local thermodynamic equilibrium (LTE) diffusion approximation and in the supersonic regime. Self-similar solutions exist for a temporal power law surface t
Externí odkaz:
http://arxiv.org/abs/2405.04981
Autor:
Krief, Menahem, McClarren, Ryan G.
Publikováno v:
Physics of Fluids 36, 017108 (2024)
Similarity solutions to the nonlinear non-equilibrium Marshak wave problem with a time dependent radiation driving source are presented. The radiation transfer model used is the gray, non-equilibrium diffusion approximation in the supersonic regime.
Externí odkaz:
http://arxiv.org/abs/2401.05138
The iterative Quasi-Monte Carlo (iQMC) method is a recently proposed method for multigroup neutron transport simulations. iQMC can be viewed as a hybrid between deterministic iterative techniques, Monte Carlo simulation, and Quasi-Monte Carlo techniq
Externí odkaz:
http://arxiv.org/abs/2401.04029
We present a hybrid method for time-dependent particle transport problems that combines Monte Carlo (MC) estimation with deterministic solutions based on discrete ordinates. For spatial discretizations, the MC algorithm computes a piecewise constant
Externí odkaz:
http://arxiv.org/abs/2312.04217
Autor:
Bennett, William, McClarren, Ryan G.
Verification solutions for uncertainty quantification are presented for time dependent transport problems where $c$, the scattering ratio, is uncertain. The method of polynomial chaos expansions is employed for quick and accurate calculation of the q
Externí odkaz:
http://arxiv.org/abs/2308.10852
Recently, iterative Quasi-Monte Carlo (iQMC) was introduced as a new method of neutron transport which combines deterministic iterative methods and quasi-Monte Carlo simulation for more efficient solutions to the neutron transport equation. Previous
Externí odkaz:
http://arxiv.org/abs/2306.14877
The Iterative Quasi-Monte Carlo method, or iQMC, replaces standard quadrature techniques used in deterministic linear solvers with Quasi-Monte Carlo simulation for more accurate and efficient solutions to the neutron transport equation. This work exp
Externí odkaz:
http://arxiv.org/abs/2306.11600
We apply the collision-based hybrid introduced in \cite{hauck} to the Boltzmann equation with the BGK operator and a hyperbolic scaling. An implicit treatment of the source term is used to handle stiffness associated with the BGK operator. Although i
Externí odkaz:
http://arxiv.org/abs/2306.11244
Autor:
Variansyah, Ilham, McClarren, Ryan G.
We propose a technique to effectively sample initial neutron and delayed neutron precursor particles for Monte Carlo (MC) simulations of typical off-critical reactor transients. The technique can be seen as an improvement, or alternative, to the exis
Externí odkaz:
http://arxiv.org/abs/2305.07646