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On the simulation o...
On the simulation of neutron noise induced by vibrations of fuel pins in a fuel assembly
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- Vinai, Paolo, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Yi, Huaiqian, 1993 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Demaziere, Christophe, 1973 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rouchon, Amélie (författare)
- Université Paris-Saclay,University Paris-Saclay
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- Zoia, Andrea (författare)
- Université Paris-Saclay,University Paris-Saclay
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- Vidal-Ferràndiz, Antoni (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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- Carreño, Amanda (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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- Ginestar, Damian (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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- Verdu, Gumersindo (författare)
- Universitat Politecnica de Valencia (UPV),Polytechnic University of Valencia (UPV)
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(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
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Ingår i: Annals of Nuclear Energy. - : Elsevier BV. - 0306-4549 .- 1873-2100. ; 181
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Vibrations of fuel assemblies are an important issue in the safe operation of nuclear reactors, because they can challenge the integrity of the fuel with potential for radioactive releases. Reactor neutron noise-based techniques for monitoring vibrations are valuable for core diagnostic since they are not intrusive and make use of ordinary neutron flux measurements from ex-core and in-core detectors. The application of these techniques involves the solution of inverse problems that require numerical simulations capable of estimating the reactor neutron noise, given a model of the vibrations. For this purpose, several novel reactor neutron noise solvers have been developed in the CORTEX project using either Monte Carlo or deterministic methods, such as the discrete ordinates method, the method of characteristics, and the diffusion approximation. In the current work, these solvers have been scrutinized by computing the neutron noise induced by vibrations of one or multiple fuel pins in a simplified UOX fuel assembly benchmark, via proper variations of macroscopic neutron cross sections. The comparison of these neutron noise solutions obtained from the different methods shows novel insights into the simulation of neutron noise induced by mechanical vibrations, such as the challenges posed by the Monte Carlo method, the impact of the angular discretization on the application of the discrete ordinates method, and the accuracy of the diffusion approximation assessed via the higher-order neutron transport methods.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Monte Carlo
- Reactor neutron noise modelling
- Deterministic transport methods
- Diffusion
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Vinai, Paolo, 19 ...
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Yi, Huaiqian, 19 ...
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Demaziere, Chris ...
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Rouchon, Amélie
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Zoia, Andrea
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Vidal-Ferràndiz, ...
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visa fler...
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Carreño, Amanda
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Ginestar, Damian
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Verdu, Gumersind ...
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visa färre...
- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Maskinteknik
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och Energiteknik
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Annan fysik
- Artiklar i publikationen
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Annals of Nuclea ...
- Av lärosätet
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Chalmers tekniska högskola