Abstract
This paper presents a new response matrix based solver implemented in the Serpent 2 Monte Carlo code for the purpose of producing an improved initial guess to accelerate source convergence in criticality source simulations. The solver obtains coupling coefficients required for the response matrix solution from Monte Carlo simulations, and provides a spatial distribution that approximates the converged fission source. The implemented methodology is demonstrated by single-assembly and full-core PWR calculations. The results show that the improved initial guess leads to faster source convergence in terms of both inactive cycles and overall running time.
| Original language | English |
|---|---|
| Pages (from-to) | 63-68 |
| Number of pages | 6 |
| Journal | Annals of Nuclear Energy |
| Volume | 128 |
| Early online date | 9 Jan 2019 |
| DOIs | |
| Publication status | Published - Jun 2019 |
| MoE publication type | Not Eligible |
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Keywords
- Criticality source simulation
- Monte Carlo
- Response matrix method
- Serpent 2
- Source convergence acceleration
Cite this
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Acceleration of fission source convergence in the Serpent 2 Monte Carlo code using a response matrix based solution for the initial source distribution. / Leppänen, Jaakko (Corresponding Author).
In: Annals of Nuclear Energy, Vol. 128, 06.2019, p. 63-68.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Acceleration of fission source convergence in the Serpent 2 Monte Carlo code using a response matrix based solution for the initial source distribution
AU - Leppänen, Jaakko
PY - 2019/6
Y1 - 2019/6
N2 - This paper presents a new response matrix based solver implemented in the Serpent 2 Monte Carlo code for the purpose of producing an improved initial guess to accelerate source convergence in criticality source simulations. The solver obtains coupling coefficients required for the response matrix solution from Monte Carlo simulations, and provides a spatial distribution that approximates the converged fission source. The implemented methodology is demonstrated by single-assembly and full-core PWR calculations. The results show that the improved initial guess leads to faster source convergence in terms of both inactive cycles and overall running time.
AB - This paper presents a new response matrix based solver implemented in the Serpent 2 Monte Carlo code for the purpose of producing an improved initial guess to accelerate source convergence in criticality source simulations. The solver obtains coupling coefficients required for the response matrix solution from Monte Carlo simulations, and provides a spatial distribution that approximates the converged fission source. The implemented methodology is demonstrated by single-assembly and full-core PWR calculations. The results show that the improved initial guess leads to faster source convergence in terms of both inactive cycles and overall running time.
KW - Criticality source simulation
KW - Monte Carlo
KW - Response matrix method
KW - Serpent 2
KW - Source convergence acceleration
UR - http://www.scopus.com/inward/record.url?scp=85059481944&partnerID=8YFLogxK
U2 - 10.1016/j.anucene.2018.12.044
DO - 10.1016/j.anucene.2018.12.044
M3 - Article
AN - SCOPUS:85059481944
VL - 128
SP - 63
EP - 68
JO - Annals of Nuclear Energy
JF - Annals of Nuclear Energy
SN - 0306-4549
ER -