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NEUTRON NOISE CALCULATIONS USING THE ANALYTICAL NODAL METHOD

机译:解析结节法计算中子噪声

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In this study, the neutron noise, i.e. the stationary fluctuations of the neutron flux around its mean value, is calculated in 2-group diffusion theory using the Analytical Nodal Method. A brief description of the calculation of the static flux is also included. The static solution is benchmarked against a reference solution in the case of a homogeneous core. The same calculational scheme for the neutron noise as for the static flux is used. As a dynamical benchmark, the calculated neutron noise for a 2D fully homogeneous reactor is compared with the analytical solution, which can easily be determined for homogeneous reactors, at different frequencies. The result of the benchmarks is that the numerical calculations using ANM accurately match the analytical solutions.
机译:在这项研究中,中子噪声,即中子通量在其平均值附近的平稳波动,是根据2组扩散理论中的分析节点法计算出来的。还包括对静态通量的计算的简短描述。如果是同质磁芯,则将静态解决方案与参考解决方案进行比较。中子噪声的计算方案与静态通量的计算方案相同。作为动态基准,将二维完全均质反应堆的计算中子噪声与分析解决方案进行比较,分析解决方案可以很容易地确定均质反应堆在不同频率下的分析结果。基准测试的结果是使用ANM进行的数值计算与解析解精确匹配。

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