本发明公开了一种铅冷快堆控氧过程中氧浓度扩散数值模拟方法，可用于铅冷快堆气相控氧和固相控氧过程中质量交换器内氧浓度扩散和分布特性数值模拟研究。通过对气相控氧和固相控氧的共同特性进行研究，将控氧过程中的多相流物理现象简化为单相模拟，可以基于一套方法同时完成气相和固相控氧的数值模拟。本发明具有资源占用低、结果可靠性高的特点，可用于铅冷快堆氧控实验预分析，有助于节省实验资源，获得更好的实验效果。

The invention discloses a numerical simulation method for oxygen concentration diffusion in an oxygen control process of a lead-cooled fast reactor, which can be used for numerical simulation research on oxygen concentration diffusion and distribution characteristics in a mass exchanger in the gas-phase oxygen control and solid-phase oxygen control processes of the lead-cooled fast reactor. By researching the common characteristics of gas-phase oxygen control and solid-phase oxygen control, the physical phenomenon of multiphase flow in the oxygen control process is simplified into single-phase simulation, and the numerical simulation of the gas-phase oxygen control and the solid-phase oxygen control can be completed simultaneously based on a set of method. The method has the characteristics of low resource occupation and high result reliability, can be used for pre-analysis of the lead-cooled fast reactor oxygen control experiment, is beneficial to saving experiment resources and obtains better experiment effect.