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The paper discusses experimental and numerical investigations on intensification of thermal and mass exchange which were performed by National Research Centre “Kurchatov Institute” over the past years. Because of enhancing the power of active power plants, intensification of thermal and mass exchange investigations are performed by a number of Russian research and design organizations. Recently, many designs of heat mass transfer intensifier grids have been proposed. NRC “Kurchatov Institute” has accomplished a large scope of experimental investigations to study efficiency of intensifier grids of various types. The outcomes of experimental investigations can be used in verification of computational models and codes. On the basis of experimental data, we derived correlations to calculate coolant mixing and critical heat flux mixing in rod bundles equipped with intensifier grids. The acquired correlations were integrated in subchannel code SC-INT.

Experimental and computational investigations of heat and mass transfer of intensifier grids