核电站液态排放中放射性核素从海水转移到海洋生物的数值模拟

采用潮流污染扩散的数值模拟,得到了大鹏澳和西大亚湾部分海域的流场、浓度场分布。在此基础上,建立了放射性核素在罗非鱼体内转移的数学模型,并根据Fick定律以及物质守恒的原理建立了相应的微分方程组,对罗非鱼从摄取放射性核素110mAg,直到排泄该核素的整个过程进行数值模拟。模拟结果与有关实验基本一致,说明本模型的建立以及参数的选取是可靠的。这为预测核电站废水排放中放射性核素对海洋生物的影响提供了科学依据。

The Numerical Simulation for the Transfer of Radionuclide From the Liquid Releases of Nuclear Power Station to Aquatic Biology

The numerical simulation of the diffusion for the contamination in tide was carried out, and the distribution of the field for tide and concentration in Dapengao and western Daya Bay has been achieved. Then the mathematical model for the transfer of radionuclide in the body of Tilapia was constructed. The corresponding differential equation group was constructed according to Fick law and conservation law of matter. The numerical simulation was going on the duration that 110m Ag was ingested then egested at the end. The result of numerical simulation basically corresponded to that of correlative experiments, so the choice of the constructed model and the parameter was reliable. So we provide the foundation for predicting the affection of the radionuclide from nuclear power station to aquatic ecosystems.