|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||Thermal Conductivity of SiC Fiber-reinforced Composites for Accident Tolerant Fuel by the Finite Element Method
||Leo A. Carrilho , Artem Aleshin, Peng Xu
|On-Site Speaker (Planned)
Finite Element Analysis (FEA) has been used to solve heat transfer problems soon after its inception in the Mid-Twentieth Century and has become a prominent tool for studying the thermal conductivity of composite materials during the past two decades. A significant portion of the Westinghouse accident tolerant fuel (ATF) design, EnCoreTM, is dedicated to developing an optimal silicon carbide (SiC) fiber-reinforced tubing to be used as nuclear fuel cladding. The purpose of this particular work is to develop a novel Finite Element Analysis (FEA) Method capable of accurately estimating the thermal conductivity of the SiC cladding. Preliminary test results were conducted to determine the heat transfer coefficient and the Nusselt number of the SiC tube through the use of a specially designed flow loop. The experimentally derived results were then used in conjunction with Computer Aided Design (CAD) and FEA techniques, validated through the use of closed form equations, in order to create a three-dimensional micromechanical representative volume element of the SiC composite cladding. The thermal conductivity of various cladding configurations based on parameters such as the volume fraction of fibers, geometry of the fibers and fiber orientation was calculated by performing steady state thermal analysis simulations. Based on the simulation results, it was concluded that the thermal conductivity of SiC fuel rod cladding designs such as EnCoreTM can be accurately evaluated by the method described in this paper.
||Planned: Supplemental Proceedings volume