NEAMS update quarterly report for January - March 2012.

Bradley, K.S. ; Hayes, S. ; Pointer, D. ; Summers, R. ; Sadasivan, P. ; Sun, X. ; Bernholdt, D. ; Miller, M. ; Stewart, J. (Nuclear Engineering Division) ; (ORNL) ; (INL) ; (LLNL) ; (ORNL) ; (SNL) ; (PNNL)

关键词: AR FACILITIES;    ALGORITHMS;    BENCHMARKS;    BUBBLE GROWTH;    BUILDING MATERIALS;    DISLOCATIONS;    DISSOLUTION;    FISSION;    GASES;    GLASS;    HYDRIDES;    KNOWLEDGE BASE;    PLASTICITY;    PROTEUS;    QUALITY ASSURANCE;    REPROCESSING;    SAMPLING;    STORAGE;    WASTE FORMS;    WASTES;   

DOI  :  10.2172/1040692
RP-ID  :  ANL-NE-12/20
PID  :  OSTI ID: 1040692
Others  :  TRN: US1202537

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

Quarterly highlights are: (1) The integration of Denovo and AMP was demonstrated in an AMP simulation of the thermo-mechanics of a complete fuel assembly; (2) Bison was enhanced with a mechanistic fuel cracking model; (3) Mechanistic algorithms were incorporated into various lower-length-scale models to represent fission gases and dislocations in UO2 fuels; (4) Marmot was improved to allow faster testing of mesoscale models using larger problem domains; (5) Component models of reactor piping were developed for use in Relap-7; (6) The mesh generator of Proteus was updated to accept a mesh specification from Moose and equations were formulated for the intermediate-fidelity Proteus-2D1D module; (7) A new pressure solver was implemented in Nek5000 and demonstrated to work 2.5 times faster than the previous solver; (8) Work continued on volume-holdup models for two fuel reprocessing operations: voloxidation and dissolution; (9) Progress was made on a pyroprocessing model and the characterization of pyroprocessing emission signatures; (10) A new 1D groundwater waste transport code was delivered to the used fuel disposition (UFD) campaign; (11) Efforts on waste form modeling included empirical simulation of sodium-borosilicate glass compositions; (12) The Waste team developed three prototypes for modeling hydride reorientation in fuel cladding during very long-term fuel storage; (13) A benchmark demonstration problem (fission gas bubble growth) was modeled to evaluate the capabilities of different meso-scale numerical methods; (14) Work continued on a hierarchical up-scaling framework to model structural materials by directly coupling dislocation dynamics and crystal plasticity; (15) New 'importance sampling' methods were developed and demonstrated to reduce the computational cost of rare-event inference; (16) The survey and evaluation of existing data and knowledge bases was updated for NE-KAMS; (17) The NEAMS Early User Program was launched; (18) The Nuclear Regulatory Commission (NRC) Office of Regulatory Research was introduced to the NEAMS program; (19) The NEAMS overall software quality assurance plan (SQAP) was revised to version 1.5; and (20) Work continued on NiCE and its plug-ins and other utilities, such as Cubit and VisIt.