b'Analyzed temperature data afterThe total separation computed peak cladding temperature producedbetween the predicted and measured scaled process curves shown in Figureprocess curves to provide an objec-2. For ideal similitude to be achieved,tive metric to rank the similitude the curves produced from the variousof different modeling options. It BISON simulations would directlyshowed that a heterogeneous radial overlay on top of the measured datapower profile corresponded to less curve. Separation from the measuredseparation consistently regardless of scaled process curve indicates an areagap conductance model or cladding local distortion. It was seen that thematerial property database used. area of largest modeling discrepancyAn advantage of this ranking was corresponded to temperatures under- that it showed that simplified cases going the - phase transition regionproduced similar separation to the in Zr-4 cladding. This feature wouldmore complex models which can not have been easily distinguishablebe used by researchers to justify from the temperature comparison inmodeling decisions. These findings Figure 1. This allowed the MATPROwere subsequently published in and International Atomic EnergyNuclear Science and EngineeringAgency (IAEA) material property databases to be objectively compared with the SETH-C test data.2021|AFC ACCOMPLISHMENTS 103'