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Title: Charge Optimized Many Body (COMB) potentials for simulation of nuclear fuel and clad

Journal Article · · Computational Materials Science
 [1];  [2];  [1];  [1];  [3];  [3];  [4];  [4]
  1. Univ. of Florida, Gainesville, FL (United States)
  2. Univ. of Florida, Gainesville, FL (United States); Pennsylvania State Univ., University Park, PA (United States)
  3. Pennsylvania State Univ., University Park, PA (United States)
  4. Idaho National Lab. (INL), Idaho Falls, ID (United States)

The Charge Optimized Many Body (COMB) potential formalism enables the molecular dynamics simulation of complex materials structures in which multiple types of bonding (metallic, covalent, ionic and secondary bonding) coexist. Here we briefly review the COMB formalism and illustrate its capabilities to address critical issues in the area of nuclear fuel. In particular, we In Section 3, we look at U, UO2 and the process of oxidation of U. In Section 4, we look at the mechaincal behavior of Zr, representing LWR clad, and explore the effects of oxidation and hydridation on the mechanical response. In Section 5, we describe the capabilities of COMB simulations of corrosion. Since there has been relatveily little work done in this area, we also describe some work performed on non-nuclear materials, which illustrate the capabilities. Section 6 briefly describes some of the known limitations of the COMB approach.

Research Organization:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
AC07-05ID14517; LDRDs 14-026; 16-013; DENE0000731; CBET-1264173
OSTI ID:
1477425
Alternate ID(s):
OSTI ID: 2325356
Report Number(s):
INL/JOU-17-43380-Rev000
Journal Information:
Computational Materials Science, Vol. 148, Issue C; ISSN 0927-0256
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Cited By (2)

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Figures / Tables (11)