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Preliminary Study on Thermal Performance of Inert Matrix Disperse Pellet Using FEA Method
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Based on the tri-isotropic (TRISO) fuel technology of high temperature gas cooled reactor, a new fuel concept for improving the accident tolerance of light water reactor (LWRs) named inert matrix dispersion pellet (IMDP) was proposed. Through the silicon carbide matrix and embedded TRISO fuel particles, the safety of the nuclear fuel could be enhanced. Recently, dummy IMDPs were fabricated by China General Nuclear Power Corporation (CGN) and thermal conductivity was tested. According to the tested data, a FEA model using ABAQUS combined its secondary development function was developed and benchmarked. Several influence factors of the effective thermal conductivity (ETC) of the IMDP were studied by the FEA model, such as burn-up, TRISO packing fraction and temperature. The heat transfer behaviors of IMDP and UO2 under typical normal PWR operating condition were also studied.
American Society of Mechanical Engineers
Title: Preliminary Study on Thermal Performance of Inert Matrix Disperse Pellet Using FEA Method
Description:
Based on the tri-isotropic (TRISO) fuel technology of high temperature gas cooled reactor, a new fuel concept for improving the accident tolerance of light water reactor (LWRs) named inert matrix dispersion pellet (IMDP) was proposed.
Through the silicon carbide matrix and embedded TRISO fuel particles, the safety of the nuclear fuel could be enhanced.
Recently, dummy IMDPs were fabricated by China General Nuclear Power Corporation (CGN) and thermal conductivity was tested.
According to the tested data, a FEA model using ABAQUS combined its secondary development function was developed and benchmarked.
Several influence factors of the effective thermal conductivity (ETC) of the IMDP were studied by the FEA model, such as burn-up, TRISO packing fraction and temperature.
The heat transfer behaviors of IMDP and UO2 under typical normal PWR operating condition were also studied.
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