Verification of kinetic capabilities of the GNOMER neutron diffusion code

Recently, the GNOMER neutron diffusion code was updated to support kinetic simulations. This direct approach to reactor kinetics is further branched into two operational modes: the so-called Lambda mode and the (normal) implicit mode. Both approaches are described in detail. Also, calculation of point kinetic parameters is implemented and discussed. To verify GNOMER�s new kinetic capabilities, two numerical tests are considered; namely, the point kinetic test case and a rod insertion simulation on a model of a typical pressurised water reactor (PWR). The reference solutions were produced by a point kinetic script and the SKETCH-N diffusion code, respectively. Very good agreement is found for all cases considered. Unusual behaviour and discrepancies � where observed � are explained satisfactorily. With the evidence provided in the paper, GNOMER is deemed to be a reliable tool for (both static and) dynamic simulation.