【摘 要】
：
针对新型空间热管反应堆,采用商用CFD软件FLUENT对其堆芯进行了稳态热工安全分析.根据MCNP物理计算的堆芯功率分布,选取功率份额最高的相邻三个燃料元件作为分析对象,对控制转鼓七种不同转动角度下的正常工况以及单根热管失效的事故工况进行了计算分析,得出了最热通道各层材料的温度分布.采用二维热管分析程序计算得到的蒸汽区的温度分布,并作为三维计算模型的温度边界.堆芯功率分布采用用户自定义程序UDF进
【机 构】
：
西安交通大学能源与动力工程学院,陕西西安 710049 中国工程物理研究院,四川绵阳 621900
论文部分内容阅读
针对新型空间热管反应堆,采用商用CFD软件FLUENT对其堆芯进行了稳态热工安全分析.根据MCNP物理计算的堆芯功率分布,选取功率份额最高的相邻三个燃料元件作为分析对象,对控制转鼓七种不同转动角度下的正常工况以及单根热管失效的事故工况进行了计算分析,得出了最热通道各层材料的温度分布.采用二维热管分析程序计算得到的蒸汽区的温度分布,并作为三维计算模型的温度边界.堆芯功率分布采用用户自定义程序UDF进行添加.计算结果表明,在额定功率4.0MW水平下,在正常工况以及单根热管失效事故工况下,热管具有足够的传热能力将堆芯裂变热导出,同时,堆芯最热通道各层材料温度均低于安全限值,且具有较大的安全裕度,满足设计要求.
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