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建立了堆芯几何和孔道几何边界源相耦合的离散坐标法 ,并用于计算反应堆孔道的深穿透屏蔽问题 .推导出可用于堆芯几何屏蔽计算的半对称求积基 ,以及用于孔道几何屏蔽计算的偏向求积基 .提出了两端几何边界源转换模型 .将上述方法用于TRIGAMARKII堆径向孔道的屏蔽计算 .计算结果表明 ,堆芯几何采用S10半对称求积基、孔道几何采用二阶S10偏向求积基的计算值接近于实验值 ,且与蒙卡程序MCNP/ 4B的计算值基本一致 .
A discrete coordinate method is proposed to couple the core geometry with the geometrical boundary source of the tunnel and to calculate the deep penetration shielding problem of the reactor tunnel.A semisymmetric quadrature base that can be used in the calculation of core geometry shielding is derived, Shielding bi-directional biased quadrature. A new model of geometric boundary source transition is proposed. The above method is applied to the shield calculation of the radial tunnel of the TRIGAMARK II reactor. The calculation results show that the geometry of the core is S10 semi-symmetric quadrature- The calculated value of the second-order S10 bias quadrature approximation is close to the experimental value and is basically consistent with the calculated value of the MCNP / 4B monel program.