Investigation of faceted void morphologies in UO2 by phase field modelling
Zhu, Yaochan LU and Hallberg, Håkan LU
(2015)
In Journal of Nuclear Materials
467(Part 1).
p.113-120
- Abstract
- In the present study a phase field model for high surface energy anisotropy is developed to model the morphologies of voids in UO2. In order to precisely account for the high anisotropy, an alternative forward-backward strategy based on a staggered grid with an averaged interface normal scheme is used in the numerical procedure. A variety of equilibrium void shapes are reproduced with respect to a constant volume condition. The facet areas and facet energies are calculated. The simulations show excellent agreement with the analytic predictions obtained through Wulff constructions. For the void shapes with high Miller index facets, it is discovered that a slight decrease in total surface area will result in a substantial increase in the... (More)
- In the present study a phase field model for high surface energy anisotropy is developed to model the morphologies of voids in UO2. In order to precisely account for the high anisotropy, an alternative forward-backward strategy based on a staggered grid with an averaged interface normal scheme is used in the numerical procedure. A variety of equilibrium void shapes are reproduced with respect to a constant volume condition. The facet areas and facet energies are calculated. The simulations show excellent agreement with the analytic predictions obtained through Wulff constructions. For the void shapes with high Miller index facets, it is discovered that a slight decrease in total surface area will result in a substantial increase in the total surface energy. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7994661
- author
- Zhu, Yaochan
LU
and Hallberg, Håkan
LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Phase field UO2 Voids Anisotropy Surface energy
- in
- Journal of Nuclear Materials
- volume
- 467
- issue
- Part 1
- pages
- 113 - 120
- publisher
- Elsevier
- external identifiers
-
- wos:000365602800011
- scopus:84942317274
- ISSN
- 0022-3115
- DOI
- 10.1016/j.jnucmat.2015.09.024
- language
- English
- LU publication?
- yes
- id
- a828bab7-d92b-4fa7-9e34-d80552bf0f32 (old id 7994661)
- date added to LUP
- 2016-04-01 09:53:01
- date last changed
- 2022-03-11 23:57:12
@article{a828bab7-d92b-4fa7-9e34-d80552bf0f32,
abstract = {{In the present study a phase field model for high surface energy anisotropy is developed to model the morphologies of voids in UO2. In order to precisely account for the high anisotropy, an alternative forward-backward strategy based on a staggered grid with an averaged interface normal scheme is used in the numerical procedure. A variety of equilibrium void shapes are reproduced with respect to a constant volume condition. The facet areas and facet energies are calculated. The simulations show excellent agreement with the analytic predictions obtained through Wulff constructions. For the void shapes with high Miller index facets, it is discovered that a slight decrease in total surface area will result in a substantial increase in the total surface energy.}},
author = {{Zhu, Yaochan and Hallberg, Håkan}},
issn = {{0022-3115}},
keywords = {{Phase field UO2 Voids Anisotropy Surface energy}},
language = {{eng}},
number = {{Part 1}},
pages = {{113--120}},
publisher = {{Elsevier}},
series = {{Journal of Nuclear Materials}},
title = {{Investigation of faceted void morphologies in UO2 by phase field modelling}},
url = {{http://dx.doi.org/10.1016/j.jnucmat.2015.09.024}},
doi = {{10.1016/j.jnucmat.2015.09.024}},
volume = {{467}},
year = {{2015}},
}