A Mechanism Investigation of Core Melting in Nuclear Reactor Using Molecular Dynamics Method
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摘要: 用分子动力学方法数值模拟了反应堆发生堆芯熔化严重事故时,熔化后的熔融金属颗粒从燃料组件上脱落,并落到下管板上,随后继续变形和延展这一过程。通过对此过程物理机理的计算与描述,计算出液滴颗粒的形状及其变化过程,从而揭示、研究堆芯融化严重事故下反应堆堆芯熔化后的力学机理。Abstract: In this paper,the molecular dynamics method is employed to simulate the physical process under the severe accident of core melting in nuclear reactors.Based on the numerical simulation results,some mechanics mechanisms are discovered.The whole motion process of the melted metal particle from the core melting to dropping onto the low pipe sheet has been captured by current simulation results.Using molecular dynamics,a further research for the severe accident of core melting in nuclear reactor could be carried out.
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Key words:
- Molecular dynamics /
- Numerical simulation /
- Nuclear reactor /
- Severe accident /
- Core melting
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