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Influence of nuclear data uncertainties on reactor core calculations
Kerntechnik, 2011Abstract To investigate the influence of nuclear data uncertainties on reactor core calculations systematically, the sampling based uncertainty and sensitivity software package SUSA developed at GRS was extended for the use with nuclear covariance data.
M. Klein +4 more
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Uncertainty in the Nuclear Data Used for Reactor Calculations
1982Part of the uncertainty in the computed value of a nuclear system parameter originates in the uncertainties in the differential nuclear data used in the calculation. The effects of these uncertainties cannot be fully circumvented by comparing computed results against those from integral experiments.
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ƒ-Calculation in heterogeneous nuclear reactors by matrix formalism
Journal of Nuclear Energy (1954), 1954Abstract Using ordinary diffusion theory, the present work gives a universal method for calculating the thermal utilization factor ƒ of a heterogeneous reactor with an elementary cell that contains an arbitrary number of concentric cylindrical shells. Approximations for the exact matrix elements reduce the computation work considerably.
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Calculation of weak self-oscillatory conditions in nuclear reactors
Soviet Atomic Energy, 1965A method for the approximate calculation of the parameters of self-oscillatory conditions in nuclear reactors with small power oscillation amplitudes is presented. An equation is derived, which, within the framework of the assumptions made, can be used fo r determining the frequencies of the reactor's possible self-oscillatory states as well as the ...
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Calculation of weak self-oscillation regimes in nuclear reactors
Journal of Nuclear Energy. Parts A/B. Reactor Science and Technology, 1966Abstract A procedure is given for making an approximate calculation of the parameters associated with self-oscillation regimes of nuclear reactors when the amplitude of the power oscillations is small. An equation is obtained which, within the framework of the approximations made, permits one to determine the frequencies of the possible self ...
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The Metastatic Method in Nuclear Reactor Core Kinetics Calculations
Nuclear Science and Engineering, 1969A quasi-static method is proposed for evaluating spatial effects on nuclear reactor kinetics. The neutron flux shape is calculated approximately as an asymptotic solution of the two-group space-tim...
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Numerical Methods for Nuclear Reactor Calculations
Mathematics of Computation, 1961E. Cuthill, G. I. Marchuk
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Calculation of transient processes in a nuclear reactor
Soviet Atomic Energy, 1967B. A. Zakharov, A. R. Mirzoyan
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On the calculation of nuclear reactor disturbances by the Monte Carlo method
USSR Computational Mathematics and Mathematical Physics, 1966Abstract THE universality of the Monte Carlo method enables us to use for nuclear reactor disturbances the general formula for small disturbances first obtained in [1]. The neutron fission importance function f ∗ (x) required for the calculations is defined in phase space X of coordinates r and velocities v and satisfies the ...
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Geant4 Extension for Neutronic Calculation of Nuclear Reactor Core
Nuclear Technology, 2023Hossein Hashemi-Jozani +3 more
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