Zobrazeno 1 - 10
of 203
pro vyhledávání: '"A.J.H. Goddard"'
Autor:
Andrew G. Buchan, P.L. Angelo, R.P. Smedley-Stevenson, Matthew D. Eaton, Paul N. Smith, A.J.H. Goddard, G. J. Gorman, Nygaard Erik T, Patrick E. Farrell, S.R. Merton
Publikováno v:
Annals of Nuclear Energy. 63:399-408
This article describes a new immersed body method for the efficient modelling of complex reactor physics problems. The approach is based on a projection method that maps geometric diagnostics of internal bodies onto practical computational meshes. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba7b1395416602451bf5268e2b3023c4
https://doi.org/10.1016/j.anucene.2013.07.044
https://doi.org/10.1016/j.anucene.2013.07.044
Autor:
Christopher C. Pain, C.M. Cooling, P. L. Angelo, Brendan Tollit, Nygaard Erik T, Matthew D. Eaton, Andrew G. Buchan, Jefferson L. M. A. Gomes, D.E. Glenn, G. J. Gorman, A.J.H. Goddard
Publikováno v:
Annals of Nuclear Energy. 48:68-83
The term “water boiler” reactor refers to a type of aqueous homogeneous reactor (AHR) that was designed, built and operated by Los Alamos in the 1940s. This was the first type of liquid fuelled reactor and the first to be fuelled with enriched Ur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e905ae5f0f869b8e3230c62581757372
https://doi.org/10.1016/j.anucene.2012.03.027
https://doi.org/10.1016/j.anucene.2012.03.027
Autor:
Matthew D. Piggott, Gerard J. Gorman, Fangxin Fang, I. M. Navon, A.J.H. Goddard, Peter A. Allison, C. C. Pain
Publikováno v:
International Journal for Numerical Methods in Fluids. 59:827-851
A novel proper orthogonal decomposition (POD) model has been developed for use with an advanced unstructured mesh finite-element ocean model, the Imperial College Ocean Model (ICOM, described in detail below), which includes many recent developments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7ada3b356aff8949bc3ceda8b4f42f6
https://doi.org/10.1002/fld.1841
https://doi.org/10.1002/fld.1841
Autor:
A.K. Ziver, Yuichi Yamane, Matthew D. Piggott, C.R.E. de Oliveira, Christopher C. Pain, Jefferson L. M. A. Gomes, A.J.H. Goddard, Matthew D. Eaton
Publikováno v:
Annals of Nuclear Energy. 35:2073-2092
This paper investigates the dynamics of a postulated criticality in a powder used as part of fuel processing. Numerical simulations are performed in 2D and 3D geometries in which layers of MOX, UO2 and zinc stearate (acting as a moderating lubricant)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51ee68173cb9de60ec0de9c027f1d7ed
https://doi.org/10.1016/j.anucene.2008.05.012
https://doi.org/10.1016/j.anucene.2008.05.012
Publikováno v:
Nuclear Science and Engineering. 159:127-152
This paper presents two new methods for discretizing the angular dimension of the Boltzmann transport equation that describes the transport of neutral particles such as neutrons and photons. Our methods represent the direction of particle travel usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::940b25386ca1a7790f52e155a2cdb2be
https://doi.org/10.13182/nse159-127
https://doi.org/10.13182/nse159-127
Publikováno v:
Annals of Nuclear Energy. 35:1098-1108
This paper describes a new second generation spherical wavelet method for discretising the angular dimension of the Boltzmann transport equation. The approximation scheme provides a spectrally accurate expansion of the angular domain using Chebyshev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb24149cb00846c52a9177a5686cbb81
https://doi.org/10.1016/j.anucene.2007.08.021
https://doi.org/10.1016/j.anucene.2007.08.021
Publikováno v:
Nuclear Science and Engineering. 158:244-263
A new method for applying anisotropic resolution in the angular domain of the Boltzmann transport equation is presented. The method builds on our previous work in which two spherical wavelet bases were developed for representing the direction of neut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38110cc392d14edcbc39c0d7e3e3878e
https://doi.org/10.13182/nse08-a2751
https://doi.org/10.13182/nse08-a2751
Autor:
A.J.H. Goddard, Fangxin Fang, C. C. Pain, Matthew D. Piggott, Ionel Michael Navon, G. J. Gorman, P. W. Power, Adrian Umpleby
Publikováno v:
Computers & Mathematics with Applications. 52:1213-1242
In this paper an adjoint- (or sensitivity-) based error measure is formulated which measures the error contribution of each solution variable to an overall goal The goal is typically embodied in an integral functional, e.g., the solution in a small r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95eafb3c372bfd8693950423eeb69425
https://doi.org/10.1016/j.camwa.2006.11.003
https://doi.org/10.1016/j.camwa.2006.11.003
Autor:
Jonathan Carter, Shan Jiang, A.K. Ziver, H. J. Phillips, S. J. Franklin, C. C. Pain, A.J.H. Goddard
Publikováno v:
Annals of Nuclear Energy. 33:1039-1057
In this paper, estimation of distribution algorithms (EDAs) are used to solve nuclear reactor fuel management optimisation (NRFMO) problems. Similar to typical population based optimisation algorithms, e.g. genetic algorithms (GAs), EDAs maintain a p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6dfdeddf5dc8da3aaff2ad0370573cf
https://doi.org/10.1016/j.anucene.2006.03.012
https://doi.org/10.1016/j.anucene.2006.03.012
Autor:
R.P. Smedley-Stevenson, C.R.E. de Oliveira, C. C. Pain, Matthew D. Piggott, A.J.H. Goddard, Matthew D. Eaton
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 195:4334-4357
This paper presents a space–time streamline upwind Petrov–Galerkin formulation for the time-dependent Boltzmann transport equation. Conventional linear space–time formulations typically take the distance across space–time elements as the repr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a3e97fd7fd4579297139d88941aeebf
https://doi.org/10.1016/j.cma.2005.09.005
https://doi.org/10.1016/j.cma.2005.09.005