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.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2017年第11期1196-1200,共5页
Special Casting & Nonferrous Alloys
基金
国家重点研究与发展计划资助项目(2017YFA0403802)
国家自然科学基金资助项目(51331005
51475120)
关键词
冷坩埚
玻璃固化
温度场
数值模拟
Cold Crucible, Glass Solidification, Temperature Field, Numerical Simulation
