Comparison of neutron noise solvers based on numerical benchmarks in a 2-D simplified UOX fuel assembly
Paper in proceeding, 2021

In the CORTEX project, several solvers are developed and applied to analyze neutron noise problems. They are based on Monte Carlo and deterministic (higher-order transport and diffusion) methods. For the study of their validity and limitations, an extensive verification and validation work has been undertaken and includes the simulation of numerical exercises and experiments. In the current paper the solvers are compared over two neutron noise benchmarks defined in a 2-D simplified UOX fuel assembly, with Monte Carlo used as a reference. In the two exercises, a global neutron noise source and a combination of stationary perturbations of the various cross sections are respectively prescribed. The higher-order neutron transport methods provide consistent results with respect to Monte Carlo. The calculations obtained from the diffusion-based solvers show discrepancies that can be significant, in particular close to the neutron noise source.

neutron noise

neutron diffusion theory

higher-order transport methods

neutron transport

Monte Carlo

Author

Paolo Vinai

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

Huaiqian Yi

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

Antonios Mylonakis

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

Christophe Demaziere

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

B. Gasse

University Paris-Saclay

A. Rouchon

University Paris-Saclay

A. Zoia

University Paris-Saclay

A. Vidal-Ferrandiz

Polytechnic University of Valencia (UPV)

D. Ginestar

Polytechnic University of Valencia (UPV)

G. Verdú

Polytechnic University of Valencia (UPV)

T. Yamamoto

Kyoto University

Proc. Int. Conf. Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C2021)

Int. Conf. Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C2021)
Online, USA,

Core monitoring techniques and experimental validation and demonstration (CORTEX)

European Commission (EC) (754316CORTEX), 2017-09-01 -- 2021-08-31.

Areas of Advance

Energy

Subject Categories

Other Physics Topics

DOI

10.13182/M&C21-33625

More information

Latest update

10/19/2021