核电站中椭圆柱形屏蔽体辐射衰减率的仿真研究

为了预测核电站中椭圆柱形屏蔽体的辐射衰减率，该文用数值解析法对放射线源到评价点的放射线所穿透椭圆柱形屏蔽物体的交点进行了研究。首先用空间解析法建立了椭圆柱形物体的数学模型。然后解曲面方程求出交点。在判断放射线是否穿透此椭圆柱体时，该文又提出了椭圆柱形屏蔽体的假想外接长方体的建模方法，将曲面方程联立解的复杂计算简化为一次代数方程的简单计算，大幅度地缩短了计算时间。

The Simulation in Elliptic Cylinder about Radioactive Shield Attenuation in Nuclear Power

In order to calculate the attenuation rate of the elliptic cylinder shield configuration in nuclear power plant, the cross points penetrated through the elliptic cylinder shielded region from source points to the detector point have been studied via numerical analysis. First, the elliptic cylinder mathematical model has been built by space analysis. Then, the camber equation has been developed for the cross points. Judging the radioactive rays whether penetrated through the elliptic cylinder shield configuration, a hypothetical circumscribed rectangular parallelepiped of the elliptic cylinder shield configuration is also presented. The methods simplify the camber equation into the linear equation and reduce the calculating time greatly.