Determination of the Thermohydraulic Parameters of Inter-Fuel-Element Channels in Research Reactors with Four-Bladed Fuel Elements

Resumo

Evaluations of the coefficients of hydraulic resistance and heat emission in the cores of the SM and PIK research reactors operating at nominal power are presented. The evaluations were obtained taking account of the shape of the flow section of an inter-fuel-element channel and the surface roughness of the fuel elements. The values obtained agree with the experimental values to within the errors.