| Abstract: | This article presents the results of experimental and analytical studies of temperature distributions and heat transfer in reactor cores with hexagonal fuel element assemblies. The temperatured is tributions in fuel elements in the central region and at the plane walls are analyzed. Some information i s given on the overheating of fuel element cladding under the spacing fins. Effects related to the redistribution of coolant flow rates over the crosssection of the assembly in the transition from turbulent to laminar flow are discussed.Translated from Atomnaya Énergiya, Vol. 22, No. 5, pp. 372–378, May, 1967. |
