Carreño, Amanda; Vidal-Ferràndiz, Antoni; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús(International Center for Numerical Methods in Engineering (CIMNE), 2017-07-05)
[EN] High accuracy is required for the solution of the lambda modes problem associated with the
neutron diffusion equation. In this work, a multigrid method based on finite element method
has been proposed to solve this ...
[EN] The dominant lambda-modes associated with a nuclear reactor configuration describe the neutron steady-state distribution and its criticality. Furthermore, they are useful to develop modal methods to study reactor ...
[EN] The methods presented in this paper solve the Simplified Spherical Harmonics approximation to the mul-
tidimensional neutron transport equation. 1D, 2D and 3D systems were modeled with Cartesian geome-
try using the ...
[EN] In-phase and out-of-phase oscillations have been observed in BWR reactors. To improve the safety of these reactors it is necessary to detect in a reliable way these oscillations from the neutronic signals. In this ...
Carreño, A.; Vidal-Ferràndiz, Antoni; Ginestar Peiro, Damián; Verdú Martín, Gumersindo Jesús(UP4 Institute of Sciences, S.L., 2017)
[EN] Determination of the reactor kinetic characteristics is very important for the design and development of a new reactor system.
In this sense, the computation of lambda modes associated to a nuclear power reactor has ...
Lambda modes of a nuclear power reactor have interest in reactor physics since they have been used to
develop modal methods and to study BWR reactor instabilities. An h–p-Adaptation finite element method
has been implemented ...
[EN] Starting from a steady state configuration of a nuclear power reactor some situations arise in which the reactor configuration is perturbed. The Lambda modes are eigenfunctions associated with a given configuration ...