基于STORM试验的GASFLOW气溶胶再悬浮模型评估与改进

以ISP40报告中STORM试验的SR11工况试验条件为基础，对GASFLOW中再悬浮模型进行适用性评估，根据试验数据所反映出的气体流速与再悬浮最小粒径的关系，对GASFLOW中再悬浮模型进行了改进。研究结果表明，GASFLOW中原再悬浮模型的分析结果与SR11工况的试验结果有较为明显的差距，改进后的模型无论在变化趋势还是数值上均与试验结果更加吻合，并且保证了源项估算的保守性。考虑到STORM试验与严重事故下实际安全壳环境条件差距较大，建议开展更为接近实际状况的试验，以提升再悬浮模型分析的准确性。

Evaluation and Improvement of Aerosol Resuspension Model in GASFLOW Based on STORM Test

Based on the SR11 case of STORM test in ISP40 report, the applicability of the resuspension model in GASFLOW was evaluated. According to the relationship between the air velocity and the minimum particle size of resuspension reflected in the test data, the resuspension model in GASFLOW was improved. The results show that there is a significant gap between the analysis results of the original resuspension model of GASFLOW and the SR11 case results. The improved model is more consistent with the test results in both the change trend and the numerical value, and ensures the conservative estimation of the source terms. Considering that there is a significant difference between the STORM test and the actual conditions in containment environment under the severe accidents, it is suggested to carry out tests closer to actual conditions, in order to improve the accuracy of the resuspension model analysis.