Calculation of Fuel Temperature Profile For Heavy Water Moderated Natural Uranium Oxide Fuel Using Two Gas Mixture Conductance Model For Noble Gas Helium and Xenon

A model for calculation of fuel temperature profile using binary gas mixture of Helium and Xenon for gap gas conductance is proposed here. In this model, the temperature profile of a fuel pencil from fuel centreline to fuel surface has been calculated by taking into account the dilution of Helium gas filled during fuel manufacturing due to accumulation of fission gas Xenon. In this model an explicit calculation of gap gas conductance of binary gas mixture of Helium and Xenon has been carried out. A computer code Fuel Characteristics Calculator (FCCAL) is developed for the model. Plots obtained using the code and comparison with 3-D neutron diffusion equation solver is added in this repository. Data and plots taken from MATPRO-10 handbook are added in the zip file, MATPRO-10 handbook is available in public domain.

本文提出了一种以氦气（Helium）和氙气（Xenon）二元混合气作为间隙气体热导介质的燃料温度分布计算模型。该模型考虑了燃料制备过程中填充的氦气因裂变气体氙气积累而产生的稀释效应，据此计算了燃料芯块从中心线至燃料表面的温度分布。本模型中实现了氦-氙二元混合气间隙气体热导的显式计算。针对该模型，研究人员开发了一款名为燃料特性计算器（Fuel Characteristics Calculator, FCCAL）的计算机程序。本代码仓库中收录了使用该程序生成的绘图结果，以及与三维中子扩散方程求解器（3-D neutron diffusion equation solver）的计算结果对比内容。压缩包中包含了取自MATPRO-10手册的相关数据与绘图结果，该手册属于公开可获取的资源。