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首页> 外文会议>ICONE18;International conference on nuclear engineering >Study of Self-Shielding Calculation with Temperature Distribution Applying Wavelets Scaling Function Expansion Continuous-EnergyResonance Method
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Study of Self-Shielding Calculation with Temperature Distribution Applying Wavelets Scaling Function Expansion Continuous-EnergyResonance Method

机译：小波尺度函数扩展连续能量的温度分布自屏蔽计算研究共振法

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The radial power distribution within the fuel rod is important in fuel integrity evaluation. In this paper, the wavelets scaling function expansion method is applied to evaluate the radial power distribution and obtain continuous-energy spectrums in the fuel rod with a temperature distribution. Wavelets scaling function expansion continuous-energy self-shielding method is developed recently. It has been validated and verified by comparison to Monte Carlo calculations. In this method, the continuous-energy cross-sections are processed by NJOY, while the multi-group nuclear data library is jefDl issued by IAEA. However, for different temperature problems, because of Doppler effect, the continuous-energy data library is different, and should be updated by applying NJOY. The calculation efficiency is a problem needed to be improved. Therefore, in this paper, the interpolation is utilized to obtain the continuous-energy cross-sections for other temperatures between those given temperatures. Also the precision of the temperature interpolation is discussed. Finally, the differences of continuous-energy spectrums, reaction rates and k-inf results are presented and compared with MCNP calculation.
机译：燃料棒内的径向功率分布在燃料完整性评估中很重要。本文采用小波尺度函数展开法对径向功率分布进行评估，得到具有温度分布的燃料棒中的连续能谱。最近开发了小波缩放函数扩展连续能量自屏蔽方法。通过与蒙特卡洛计算进行比较，已对其进行了验证和验证。在这种方法中，连续能量截面由NJOY处理，而多组核数据库为IAEA发布的jefDl。但是，对于不同的温度问题，由于多普勒效应，连续能量数据库是不同的，应通过应用NJOY进行更新。计算效率是一个有待提高的问题。因此，在本文中，利用插值法获得了在给定温度之间其他温度下的连续能量横截面。还讨论了温度插值的精度。最后，给出了连续能谱，反应速率和k-inf结果的差异，并将其与MCNP计算进行了比较。

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