Modelling and Simulation of Heat Transfer in the Moicrowave Sintering Process of Uranium Dioxide

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Ahmadi, Mustafa | 2022

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 55877 (46)
University: Sharif University of Technology
Department: Energy Engineering
Advisor(s): Outokesh, Mohammad; Mousavian, Khalil
Abstract:
One of the steps in the production of nuclear fuel pellets used in the core of a nuclear reactor is sintering. Sintering means the consolidation of a pressed powder sample into an integrated solid. This process can be done in different ways, such as traditional sintering, microwave, spark plasma, etc. In the process of fabrication of nuclear fuel pellets, after producing uranium dioxide in powder form and making corrections on the size distribution of powder grains, it would be nolded and then sintered. In this research, the temperature evolution of the green pellets introduced to microwave heating were investigated. In this report, a brief overview of the principles of microwave heating is discussed at first. In the following, the computational code used for simulation is introduced and then the research background of this study is examined. Then, the practical process of sintering is described and also the results of the simulation are reviewed
Keywords:
Heat Transfer ; Simulation ; Uranium Dioxide ; Microwave Sintering ; Microwave Oven ; Gadolinium Oxide Nanoparticles ; Uranium Dioxide Pellet

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