Ф100冷坩埚玻璃固化高频电源多物理场耦合仿真研究  

Multi-Physical Field Coupling Simulation ofФ100 Cold Crucible Glass Solidification High Frequency Power Supply

作　　者：王泽学 李玉松[1] 朱冬冬 张安琪 洪业[1] 龙浩骑[1] 张生栋[1] WANG Zexue;LI Yusong;ZHU Dongdong;ZHANG Anqi;HONG Ye;LONG Haoqi;ZHANG Shengdong(China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《原子能科学技术》2023年第6期1076-1088,共13页Atomic Energy Science and Technology

摘　　要：高频电源是冷坩埚高放废液玻璃固化系统的重要组成部件,但由于每套高频电源参数出厂后参数不可调节且价格昂贵,因此一直未能开展电源参数对冷坩埚的匹配性研究,无法确定高频电源的最优参数组合以及最佳匹配状态。利用价格低廉且参数可微调的小型高频电源建立Ф100冷坩埚实验装置并开展电源与埚体的匹配性规律研究是解决上述问题的有效途径,但由于实验变量过多,实验测量可获取的有效数据较少,因此本文开展了Ф100冷坩埚玻璃固化高频电源多物理场耦合的仿真研究,利用COMSOL,以电流强度、频率、线圈匝数等条件为变量开展对熔融玻璃液的温度场、流场及磁场的多场耦合仿真。结果表明,适当增加电流强度和频率可改善熔制能力,适当增加线圈直径、间距、匝数可提高能量利用率,线圈高度处于中部位置偏下可提高温度场磁场分布,圆形线圈及冷坩埚较椭圆形更具优势。与实验结果相比,经过初步电源参数优化后的冷坩埚熔池体积提高了22.8%、平均温度提高了35%,较大幅度地改善了冷坩埚的熔制效果。High-frequency power supply is an important component of high-discharge glass curing systems for high level radioactive waste(HLLW)of cold crucibles,but because the parameters of each set of high-frequency power supply are not adjustable from the factory and are expensive,it is impossible to study the matching of the power supply parameters to the cold crucible and determine the optimal combination of parameters and the best matching state for the high-frequency power supply.The use of a small,inexpensive and fine-tunable high-frequency power supply to set up aФ100 cold crucible experimental setup and to investigate the match between the power supply and the crucible is an effective way to solve this problem,but due to the large number of experimental variables and the small amount of valid data available from actual measurements,it is decided to carry out a simulation study of the multi-physics field coupling of aФ100 cold crucible glass-curing high-frequency power supply.In this paper,COMSOL was used to carry out a multi-physical field coupling simulation of the temperature,flow and magnetic fields of the molten glass liquid,using current strength,frequency and number of turns of the coil as variables.The results show that increasing the current strength and frequency improves the melting capacity,increasing the coil diameter,spacing and number of turns improves the energy utilisation,the coil height is lower in the middle to improve the temperature field and magnetic field distribution,and the round coil and cold crucible are more advantageous than the oval.The initial optimization of the power supply parameters results in a 22.8%increase in the melt cell volume and a 35%increase in the average temperature of the cold crucible,which significantly improves the melting effect of the cold crucible.The simulated experiments provide guidance for the development of theФ100 cold crucible experiments and lay the foundation for the optimisation of the high frequency power supply and coil parameters.

关 键 词：Ф100冷坩埚 高频电源 COMSOL 多物理场耦合 高放废液 

分 类 号：TL941.33[核科学技术—辐射防护及环境保护]