Forced propagation method for Monte Carlo fission source convergence acceleration in the RMC

2021 ◽  
Vol 32 (3) ◽  
Author(s):  
Ze-Guang Li ◽  
Kan Wang ◽  
Yu-Chuan Guo ◽  
Xiao-Yu Guo
Keyword(s):  
Monte Carlo ◽  
Convergence Acceleration ◽  
Source Convergence

scholarly journals ENHANCING THE PERFORMANCE OF FISSION SOURCE CONVERGENCE WITH FUNCTIONAL EXPANSION TALLIES IN SERPENT 2 MONTE CARLO CODE

2021 ◽  
Vol 247 ◽  
pp. 04001
Author(s):  
Ana Jambrina ◽  
Jaakko Leppänen ◽  
Heikki Suikkanen
Keyword(s):  
Monte Carlo ◽  
Form Factors ◽  
Convergence Acceleration ◽  
Initial Guess ◽  
Monte Carlo Code ◽  
Response Matrix ◽  
Forward Solution ◽  
Functional Expansion ◽  
Source Convergence ◽  
New Feature

This paper presents an upgrade to the built-in response matrix based solver implemented in Serpent 2 Monte Carlo code aiming to improve the fission source convergence when obtaining the forward solution to the k-eigenvalue criticality source problems. The functional expansion tallies are introduced in an attempt to improve the accuracy of the cell-wise form factors that feed the response matrix solver, replacing the current mesh-based approach. The functional expansion tallies reconstruct the binning surface and collision tallies, by using high-order series expansion to represent the original and continuous spatial distributions. This new feature is implemented to Serpent 2 and tested by single-assembly and full-core PWR calculations (BEAVRS benchmark). The results show enhanced performance of the convergence acceleration methodology based on an improved initial guess of the fission source.

Source extrapolation scheme for Monte Carlo fission source convergence based on RMC code

2022 ◽  
Vol 166 ◽  
pp. 108737
Author(s):  
Qingquan Pan ◽  
Yun Cai ◽  
Lianjie Wang ◽  
Tengfei Zhang ◽  
Xiaojing Liu ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Source Convergence ◽  
Extrapolation Scheme

Convergence Acceleration of Parallel Monte Carlo Second-Order Many-Body Perturbation Calculations Using Redundant Walkers

2013 ◽  
Vol 9 (10) ◽  
pp. 4396-4402 ◽  
Author(s):  
Soohaeng Yoo Willow ◽  
Matthew R. Hermes ◽  
Kwang S. Kim ◽  
So Hirata
Keyword(s):  
Monte Carlo ◽  
Convergence Acceleration ◽  
Second Order ◽  
Many Body
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