Improved MPACT energy deposition and explicit heat generation coupling with CTF

Yuxuan Liu,Robert Salko,Kang Seog Kim,Xinyan Wang,Matthew Kabelitz,Sooyoung Choi,Brendan Kochunas,Benjamin Collins,William Martin

Annals of Nuclear Energy（2021）

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摘要

•Explicit energy deposition and heating calculation is developed in MPACT and CTF.•Time-dependent delayed energy, nonfuel heat, and gamma smearing are considered.•The new model reduces the peak pin power by 2.3% and fuel temperature by 17 K.•The new model shows a keff difference up to −100 pcm in depletion.•The new model increases fuel safety margin for reactivity-initiated accident problem.

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关键词

Energy deposition,Delayed energy,Gamma smearing,MPACT,CTF

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