... optimization. Firstly, the fuel failure model under loss of coolant accident is studied. The main modes of fuel failure in IB-LOCA accident are due to cladding burst and Departure from Nucleate Boiling (DNB). Then, transient analysis, break spectrum and burn-up sensitivity analysis are carried out...

... Proceedings of the 2021 28th International Conference on Nuclear Engineering ICONE28 August 4-6, 2021, Virtual, Online ICONE28-66591 BASELINE WALT DNB TEST RESULTS WITH CR-COATED CLADDING TO SUPPORT ACCIDENT TOLERANT FUEL DEVELOPMENT Guoqiang Wang1, William A. Byers1, Zeses Karoutas1 1Westinghouse...

... the opportunity of delivering improved fuel design, taking full advantage of three-dimensional mixing and turbulence control, but must extend their predictive capabilities to multiphase conditions up to DNB, where the maturity and accuracy of the methods is still developing. In this paper, the closures developed...

... 05 03 2009 For the purpose of predicting CHF for a wide range in quality, we developed the analytical CHF prediction method. Two-phase flow analysis code based on multi-fluid model was developed and, by using typical dryout model and DNB model, CHF predictions for a wide range...

... Computational Fluid Dynamics PWR fuel DNB For development of PWR spacer grids, it is necessary to confirm mechanical strength and thermal-hydraulic characteristics. Mitsubishi has applied Computational Fluid Dynamics (CFD) to thermal-hydraulic design of spacer grids. To satisfy...