Specifics of supercritical parameters of a flow under non-uniform heating of the fuel assembly channel walls

TitleSpecifics of supercritical parameters of a flow under non-uniform heating of the fuel assembly channel walls
Publication TypeJournal Article
Year of Publication2014
AuthorsAvramenko, AA, Kondratieva, EA, Kovetskaya, MM, Tyrinov, AI, Vasilchenko, VV
Abbreviated Key TitleDopov. Nac. akad. nauk Ukr.
SectionHeat Physics
Date Published10/2014
Based on the RNG $k$-$\varepsilon$ turbulence model, computer simulations are performed. Their results include distributions of the hydrodynamical and heat transfer parameters for a supercritical water flow in the seven-rod fuel assembly. The simulations were performed under steady state conditions at uniform and non-uniform heating of the channel walls, which enabled us to reveal effects of the heating on the distribution of the coolant properties. It is shown that the non-uniform heating an causes azimuthal non-uniformity of the heat transfer coefficient.
Keywordsfuel assembly channel, heating, supercritical parameters

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