玻璃固化用电磁冷坩埚温度场研究
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摘要
使用冷坩埚对核废料进行固化处理后将固化体深埋可以防止核废料污染环境,而固化时熔体的温度分布将直接影响固化体的质量。利用Ansys软件建立了温度场计算模型,并通过试验验证了模型的准确性。利用此模型分析了冷坩埚玻璃固化时熔体不同位置以及不同电源参数条件下的温度分布。结果表明,随着电流值和频率的增加,加热到工作温度的时间缩短,但温度梯度增大,使熔体内部温度分布不均匀。熔炼过程中应根据实际情况添加机械搅拌。
Through using cold crucible to curing nuclear waste and deeply burying solidified body,the detriment of nuclear waste for environment could be prevented.The temperature distribution of melt interior will impact the quality of the solidified body directly.A temperature field calculation model was established by Ansys software.Then accuracy of the model was verified by experiments.The distribution of temperature field in melt was simulated and the distribution of temperature was analyzed at different power parameters by using the model.The results reveal that with the increase of current value and frequency,heating time to the operating temperature can be shortened,however,the temperature gradient can be enlarged,which cause the uneven distribution in melt.Smelting process should set mechanical agitation on the basis of physical conditions.
Through using cold crucible to curing nuclear waste and deeply burying solidified body,the detriment of nuclear waste for environment could be prevented.The temperature distribution of melt interior will impact the quality of the solidified body directly.A temperature field calculation model was established by Ansys software.Then accuracy of the model was verified by experiments.The distribution of temperature field in melt was simulated and the distribution of temperature was analyzed at different power parameters by using the model.The results reveal that with the increase of current value and frequency,heating time to the operating temperature can be shortened,however,the temperature gradient can be enlarged,which cause the uneven distribution in melt.Smelting process should set mechanical agitation on the basis of physical conditions.
引文
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[14]刘丽君,张生栋.放射性废物冷坩埚玻璃固化技术发展分析[J].原子能科学技术,2015(4):589-596.
[15]王晓花,厉英.钢锭凝固过程温度场数值模拟[J].铸造,2013,62(5):410-419.
[16]CHEN R R,YANG Y H,FANG H Z,et al.Glass melting inside electromagnetic cold crucible using induction skull melting technology[J].Applied.Thermal.Engineering,2017,121:146-152.
[17]YANG J R,CHEN R R,GUO J J,et al.Temperature distribution in bottomless electromagnetic cold crucible applied to directional solidification[J].International Journal of Heat and Mass Transfer,2016,100:131-138.
[18]张伟,方健儒,熊守美.基于有限差分非规则边界网格剖分技术[J].铸造,2013,62(5):406-409.
[19]YANG Y H,CHEN R R,GUO J J,et al.Experimental and numerical investigation on mass transfer induced by electromagnetic field in cold crucible used for directional solidification[J].International Journal of Heat and Mass Transfer,2017,114:297-306.
[2]施向军,BEMARD L C.核电的优越性[J].中国核工业,2000(3):342-346.
[3]卢荣.核废料的处理方法[J].科技论坛,2014,23:223-224.
[4]MILNES A G.Geology and Rad Waste[M].New York:Academic Press INC,1985.
[5]DON J B.Behind the Nuclear Curtain:Radioactive Waste-Management in the Former Soviet Union[M].UN:Battelle Memorial Institute,1997.
[6]孟鹏飞.废弃矿井资源二次利用的研究[J].中国矿业,2011,20(7):62-65.
[7]ARUP O.Ocean Disposal of Radioactive Waste by Penetrator Emplacemen,Graham&TrotmonLet[R].For the Commission of European Communities,1985:1 301-1 309.
[8]高正岚.把核废料送到太空去[J].世界发明,2004(11):12-13.
[9]肖丰,郭永海,王志明.高放废物处置库甘肃北山预选区同位素水文学研究及设想[J].铀矿地质,2012,28(2):114-119.
[10]徐国庆.2000~2040年我国高放废物深部地质处置研究初探[J].铀矿地质,2002,18(3):160-167.
[11]柴振红.环境污染控制[M].北京:中国环境科学出版社,1993.
[12]李倩,赖振宇,卢忠远.锆酸盐人造岩石的制备及其浸出性能的研究[J].武汉理工大学学报,2012(9):5-9.
[13]徐凯.核工业可持久发展的基石—核废料科学管理与处置[J].中国材料进展,2015(2):173-175.
[14]刘丽君,张生栋.放射性废物冷坩埚玻璃固化技术发展分析[J].原子能科学技术,2015(4):589-596.
[15]王晓花,厉英.钢锭凝固过程温度场数值模拟[J].铸造,2013,62(5):410-419.
[16]CHEN R R,YANG Y H,FANG H Z,et al.Glass melting inside electromagnetic cold crucible using induction skull melting technology[J].Applied.Thermal.Engineering,2017,121:146-152.
[17]YANG J R,CHEN R R,GUO J J,et al.Temperature distribution in bottomless electromagnetic cold crucible applied to directional solidification[J].International Journal of Heat and Mass Transfer,2016,100:131-138.
[18]张伟,方健儒,熊守美.基于有限差分非规则边界网格剖分技术[J].铸造,2013,62(5):406-409.
[19]YANG Y H,CHEN R R,GUO J J,et al.Experimental and numerical investigation on mass transfer induced by electromagnetic field in cold crucible used for directional solidification[J].International Journal of Heat and Mass Transfer,2017,114:297-306.