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首页> 外文期刊>Memoirs of the Faculty of Engineering, Kyushu University >Thermochemical Prediction of Chemical Form Distributions of Fission Products in LWR Mixed Oxide Fuels
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Thermochemical Prediction of Chemical Form Distributions of Fission Products in LWR Mixed Oxide Fuels

机译：轻水堆混合氧化物燃料中裂变产物化学形态分布的热化学预测

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摘要

Radial distribution of chemical forms of fission products (FPs) in LWR mixed oxide (MOX) fuel pins was theoretically predicted by a Thermochemical computer code SOLGASMIX-PV. The amounts of fis- Sion products generated in the fuel were calculated by ORIGEN-2 code, And the radial distributions of temperature and oxygen potential were Calculated by taking the neutron depression and oxygen redistribution in The fuel into account. A fuel pellet was radically divided into 51 sections and chemical Forms of FPs were calculated in each section. The effects of linear heat Rating (LHR) and average O/U ratio on radial distribution of chemical Form were evaluated. It was found that the radial distribution of chemical forms depends Strongly on the LHR and the O/M ratio, and is not proportional to that Of burnup.
机译：理论上，通过热化学计算机代码SOLGASMIX-PV可以预测LWR混合氧化物（MOX）燃料销中裂变产物（FPs）的化学形式的径向分布。燃料中产生的裂变产物的量通过ORIGEN-2代码进行计算，并通过考虑燃料中的中子压降和氧的重新分布来计算温度和氧势的径向分布。将燃料颗粒从根本上分为51个部分，并在每个部分中计算FP的化学形式。评估了线性热额定值（LHR）和平均O / U比对化学形式的径向分布的影响。发现化学形式的径向分布在很大程度上取决于LHR和O / M比，并且与燃尽的比例不成比例。

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