Abstract
We present a new approach to fission gas release modeling in oxide fuels based on grain boundary network percolation. The method accounts for variability in the bubble growth and coalescence rates on individual grain boundaries, and the resulting effect on macroscopic fission gas release. Two-dimensional representations of fuel pellet microstructures are considered, and the resulting gas release rates are compared with traditional 2-stage Booth models, which do not account for long-range percolation on grain boundary networks. The results show that accounting for the percolation of saturated grain boundaries can considerably reduce the predicted gas release rates, particularly when gas resolution is considered.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 176-182 |
| Number of pages | 7 |
| Journal | Journal of Nuclear Materials |
| Volume | 424 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - May 1 2012 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
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Grain boundary percolation modeling of fission gas release in oxide fuels. / Millett, Paul C.; Tonks, Michael R.; Biner, S. B.
In: Journal of Nuclear Materials, Vol. 424, No. 1-3, 01.05.2012, p. 176-182.Research output: Contribution to journal › Article
TY - JOUR
T1 - Grain boundary percolation modeling of fission gas release in oxide fuels
AU - Millett, Paul C.
AU - Tonks, Michael R.
AU - Biner, S. B.
PY - 2012/5/1
Y1 - 2012/5/1
N2 - We present a new approach to fission gas release modeling in oxide fuels based on grain boundary network percolation. The method accounts for variability in the bubble growth and coalescence rates on individual grain boundaries, and the resulting effect on macroscopic fission gas release. Two-dimensional representations of fuel pellet microstructures are considered, and the resulting gas release rates are compared with traditional 2-stage Booth models, which do not account for long-range percolation on grain boundary networks. The results show that accounting for the percolation of saturated grain boundaries can considerably reduce the predicted gas release rates, particularly when gas resolution is considered.
AB - We present a new approach to fission gas release modeling in oxide fuels based on grain boundary network percolation. The method accounts for variability in the bubble growth and coalescence rates on individual grain boundaries, and the resulting effect on macroscopic fission gas release. Two-dimensional representations of fuel pellet microstructures are considered, and the resulting gas release rates are compared with traditional 2-stage Booth models, which do not account for long-range percolation on grain boundary networks. The results show that accounting for the percolation of saturated grain boundaries can considerably reduce the predicted gas release rates, particularly when gas resolution is considered.
UR - http://www.scopus.com/inward/record.url?scp=84859062001&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859062001&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2012.03.006
DO - 10.1016/j.jnucmat.2012.03.006
M3 - Article
AN - SCOPUS:84859062001
VL - 424
SP - 176
EP - 182
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 1-3
ER -