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- W2924620199 abstract "Abstract Boiling water reactors are simulated using nodal diffusion core simulators which rely upon homogenized and condensed cross sections from a lattice physics code. In the lattice calculation, the void distribution is typically assumed to be uniform in the radial direction. To remove this assumption, a thermal hydraulic code can be coupled with a lattice physics code to include a radial void distribution in the cross sections. To minimize the additional computational costs, a surrogate model can be generated for the thermal hydraulic code. In this research, a surrogate model is generated for the thermal hydraulic code F-COBRA-TF using sparse grid interpolation. The surrogate model is tested on how well it can reproduce the F-COBRA-TF void distribution for various conditions on the ATRIUM 10 assembly. The surrogate model is found to be effective at reproducing the F-COBRA-TF void distribution and reducing the computational costs from the order of minutes to about a second. A coupling is created between the surrogate model and the lattice physics code APOLLO2-A. Including the void distribution in the lattice physics calculation is found to have a large effect on the gadolinium worth." @default.
- W2924620199 created "2019-04-01" @default.
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- W2924620199 date "2019-09-01" @default.
- W2924620199 modified "2023-09-27" @default.
- W2924620199 title "A surrogate model based on sparse grid interpolation for boiling water reactor subchannel void distribution" @default.
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- W2924620199 doi "https://doi.org/10.1016/j.anucene.2019.03.022" @default.
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