Authors & Affiliations
Varseev E.V., Konovalov M.A., Alexeev V.V.
A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia
Varseev E.V. – research engineer, A.I. Leypunsky
Konovalov M.A. – research engineer, A.I. Leypunsky Institute for Physics and Power Engineering.
Alexeev V.V. – Dr. Sci. (Tech.), chief researcher, A.I. Leypunsky Institute for Physics and Power Engineering.
For the safe operation of NPP with fast reactor cooled with sodium, it is needed, as in the case with NPP cooled with water, to sustain specific level of purity of liquid metal coolant. At the development of new generation NPP with sodium coolant to raise safety level of nuclear system it has been decided to place cold trap in the reactor vessel. To justify this decision experimental investigations on the o perational characteristics of the incorporated three-zone cold trap are required. For the effective planning of experimental studies of cold trap mock-up preliminary calculations on velocity distribution ad temperature of sodium inside cold trap were performed with step-by-step simulation thermalhydroulics and heat- and masstransfer, which allowed to prepare methodology of experimental work, to find optimal design parameters of cold trap mock-up, test section of experimental facility and to define direction of next investigations. Mass transfer CFD simulation in cold trap mockup gave us a number of impurity accumulation fluxes in every point. Results of simulation were post processed and ready for comparing with experimental data.
sodium, masstransfer, impurities, purification, numerical simulation
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