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本文在文献[2]的基础上,导出了低密度区为三区结构的轴向扩散系数 D_z 计算公式,并计算出三区结构几何尺寸变化对 D_z 的影响,最后给出芯部中心低密度区修正轴向扩散系数对 k_(eff) 影响的计算结果。
Based on the literature [2], this paper derives the calculation formula of the axial diffusion coefficient D_z for the three-zone structure in the low-density area and calculates the influence of the geometrical dimension of the three-zone structure on the D_z. Finally, Calculation of the Effect of Zone Corrected Axial Diffusion Coefficient on k_ (eff).