Spacetime calculation of transient processes in fast reactors

UDC: 
519.6:621.039.5

Issue of journal:

Abstract: 

Algorithms of 3D neutron physics simulating for fast transient abnormal conditions in BNtype
reactors core were developed in the GVA code. A quasistatic approximation is used for the solution
of nonstationary equation of reactor physics This approach divides the original equation onto the
system of two equations: for calculating of the amplitude factor, which is quickly changed during the
time and does not depend on spatial coordinates, and formfunction, which depends on spatial
coordinates and is slightly changed during the time. The results of test simulating in flow rate stop
conditions and in selfmovement of control rods conditions are demonstrated.

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