Research and validation on the numerical algorithm of mechanical module in a transient fuel rod performance code for fast reactor

•Models of irradiation behaviors for the fuel rod in LMFR like cracking-healing and PCMI have been established.•A numerical algorithm of mechanical module in fuel rod performance code for LMFR has been developed.•Accuracy and reliability of the numerical algorithm has been verified and validated by...

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Veröffentlicht in:Annals of nuclear energy Jg. 171; S. 108991
Hauptverfasser: Yang, Guangliang, Guo, Zixuan, Wang, Peng, Wang, Weixiang, Liao, Hailong, Ding, Tao, Chen, Hongli
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 15.06.2022
Schlagworte:
Fuel rod performance code
In-pile behaviors
LMFR
Mechanical analysis
Numerical algorithm
SAS
LWR
PSI
PCMI
USTC
ITU
KMC-Fuel(tra)
In-pile behaviors
PDS-XADS
LBE
LMFR
Mechanical analysis
Fuel rod performance code
FFTF
JAERI
CIAE
MIT
PNNL
FAST
TREAT
BPJ
ANL
Numerical algorithm
ISSN:0306-4549, 1873-2100
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Zusammenfassung:•Models of irradiation behaviors for the fuel rod in LMFR like cracking-healing and PCMI have been established.•A numerical algorithm of mechanical module in fuel rod performance code for LMFR has been developed.•Accuracy and reliability of the numerical algorithm has been verified and validated by analytical solutions and typical code results. Mechanical performance is an important aspect for the fuel rod performance in LMFR. Operating conditions in LMFR, like large power density, high fast neutron flux and deep burnup, are hash for the fuel rod. The evolution of fuel rod behaviors is complicated and tightly coupled with each other through temperature, stress and burnup. Considering various in-pile behaviors of the fuel rod under fast neutron irradiation, the numerical iterative algorithm based on grid integration was established to deal with the complex nonlinear mechanical problem for the fuel rod in LMFR. Verification and validation have been carried out by comparing results from this algorithm with analytical solutions as well as results from typical code, which are all in good agreement with each other, proving the accuracy and reliability of this algorithm.
ISSN:0306-4549
1873-2100
DOI:10.1016/j.anucene.2022.108991