离心级联供料扰动过程中丰度分布的数值模拟

为了得到离心级联流体状态变化时同位素丰度分布情况,建立了丰度变化下的动态数学模型,与水力学数值模拟进行耦合,利用Q迭代算法求解了动态丰度方程。Xe分离数值模拟结果表明,该模型和算法可以有效求解离心级联动态丰度分布。在扰动幅度和持续时间都相同的情况下,丰度的变化与该组分在同位素中的位置、距离扰动级的位置、机器滞留量以及稳态下丰度的分布情况都密切相关。研究结果可供实际同位素生产中参数分析和调整时参考。

Numerical simulations of concentration distribution during feed disturbances in a centrifuge cascade

A dynamic mathematical model was developed to predict the concentration variations in a hydraulics simulation of an unsteady centrifuge cascade.The Q-iteration method was used to solve the concentration equations.Xe separation simulations show that the algorithm is effective for determining the unsteady concentration distributions in a centrifuge cascade.For the same level of disturbance,the concentration changes are related to the isotope mixture,the disturbance,the centrifuge holdup and the concentration ...