Sökning: id:"swepub:oai:research.chalmers.se:8c74ea8a-435c-4b0f-b3b7-8a572244e3f7" >
Modelling and simul...
Modelling and simulations of reactor neutron noise induced by mechanical vibrations
-
- Vidal, Antoni (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
-
- Ginestar, Damian (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
-
- Carreño, A. (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
-
visa fler...
-
- Verdu, Gumersindo (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
-
- Dokhane, Abdelhamid (författare)
- Paul Scherrer Institut
-
- Verma, V. (författare)
- Paul Scherrer Institut
-
- Perin, Y. (författare)
- Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) Mbh
-
- Herb, J. (författare)
- Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) Mbh
-
- Mylonakis, Antonios, 1987 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Demaziere, Christophe, 1973 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Vinai, Paolo, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
-
Ingår i: Annals of Nuclear Energy. - : Elsevier BV. - 0306-4549 .- 1873-2100. ; 177
- Relaterad länk:
-
https://research.cha... (primary) (free)
-
visa fler...
-
https://doi.org/10.1...
-
https://research.cha...
-
visa färre...
Abstract
Ämnesord
Stäng
- Mechanical vibrations of core internals are among the main perturbations that induce oscillations in the neutron flux field, also known as neutron noise. In this work, different simulation models for the study of the influence of the mechanical vibrations of fuel assemblies on the neutron flux in the reactor core have been discussed. These methodologies employ the diffusion approximation, with or without a previous homogenization model, to simulate the neutron noise in the time or the frequency domain. The diffusion-based approach is expected to be less accurate in the vicinity of the vibrating fuel assemblies, but correct when considering distances larger than a few diffusion lengths away from the perturbation. All methodologies provide consistent results and can reproduce typical features of the neutron noise induced by mechanical vibrations of core components. First, FEMFFUSION can perform simulations in both the time and frequency domains. Second, CORE SIM + can be used to study various neutron noise scenarios in realistic three-dimensional reactor configurations. The third methodology is centred on using commercial codes as CASMO-5, SIMULATE-3 and SIMULATE-3K. This methodology allows time domain simulations of the neutron noise induced by different neutron noise sources in a nuclear reactor. Finally, a model for time-dependent geometry is implemented for the code system ATHLET/QUABOX-CUBBOX employing a cross-section-based approach for encoding water gap width variations at the reflector.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Frequency domain
- Fuel assembly vibrations
- Neutron diffusion
- Time domain
- Neutron noise
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Vidal, Antoni
-
Ginestar, Damian
-
Carreño, A.
-
Verdu, Gumersind ...
-
Dokhane, Abdelha ...
-
Verma, V.
-
visa fler...
-
Perin, Y.
-
Herb, J.
-
Mylonakis, Anton ...
-
Demaziere, Chris ...
-
Vinai, Paolo, 19 ...
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Annan fysik
- Artiklar i publikationen
-
Annals of Nuclea ...
- Av lärosätet
-
Chalmers tekniska högskola