### Abstract

We demonstrate that efficiency of Monte Carlo burnup
calculations can be largely affected by the selected time
step length. This study employs the stochastic implicit
Euler based coupling scheme for Monte Carlo burnup
calculations that performs a number of inner iteration
steps within each time step. In a series of calculations,
we vary the time step length and the number of inner
iteration steps; the results suggest that Monte Carlo
burnup calculations get more efficient as the time step
length is reduced. More time steps must be simulated as
they get shorter; however, this is more than compensated
by the decrease in computing cost per time step needed
for achieving a certain accuracy.

Original language | English |
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Pages (from-to) | 409-412 |

Number of pages | 4 |

Journal | Annals of Nuclear Energy |

Volume | 72 |

DOIs | |

Publication status | Published - 2014 |

MoE publication type | A1 Journal article-refereed |

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### Keywords

- Monte Carlo burnup
- coupling schemes
- implicit Euler method
- nuclear reactors