Features of Mass Transfer of Noncondensable Gases by Primary Coolant of Nuclear Icebreaker Reactors
- 8 Downloads
To study the characteristics of the mass transfer of noncondensable gases in the primary loop of the nuclear icebreaker reactors, models of the core and the up-core space were developed using the Relap5 (USA) and Fluent (USA) codes and modeling of interphase mass transfer and transport of the gas phase by the water coolant was performed on these sections. Spatial non-uniformity of the content of undissolved gases, which arises as a result of vapor-gas bubbles concentrating in the vortex structures of the flow and resulting in a significant reduction of their dissolution rate, was revealed. This must be taken into account in the analysis of the operation of the primary loop equipment of nuclear icebreakers (hydrogen absorption in the titanium alloys of steam-generator piping, nodular corrosion of the zirconium cladding of the fuel rods).
Unable to display preview. Download preview PDF.
- 2.S. A. Kabakchi, A. V. Luzakov, D. S. Urtenov, et al., “Assessment of the corrosion state of equipment elements 1 of the loop of transport power plants using water-chemistry indicators,” Teploenergetika, No. 3, 42–48 (2019).Google Scholar
- 4.V. I. Baranenko, V. S. Sysoev, L. N. Fal’kovskii, et al., “Solubility of nitrogen in water,” At. Energ., 65, No. 2, 133–135 (1990).Google Scholar
- 6.R. Higbie, “The rate of absorption of a pure gas into a still liquid during short periods of exposure,” AIChE J., 31, 365–389 (1935).Google Scholar
- 9.V. Ustinenko, M. Samigulin, A. Ioilev, et al., “Validation of CFD-BWR, a new two-phase computational fluid dynamics model for boiling water reactor analysis,” ibid., 660–670.Google Scholar