Specifics of supercritical parameters of a flow under non-uniform heating of the fuel assembly channel walls
DOI:
https://doi.org/10.15407/dopovidi2014.10.076Keywords:
fuel assembly channel, heating, supercritical parametersAbstract
Based on the RNG k-ε 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.
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