高熔点物质与冷却剂相互作用的机理研究
发布时间：2019-06-01 13:25
【摘要】：高温熔融物与低温冷却剂间的相互作用是核反应堆严重事故下的重要现象,关于这一现象,国际上多年来开展了大量实验和数值研究。然而,熔融物与冷却剂热相互作用(FCI)的作用机理至今未能解明,数值模拟的分析结果同实验数据间仍存在较大差距。本研究通过建立中型熔融物与冷却剂相互作用实验台架,研究FCI影响因素及熔融物与冷却剂间的热相互作用机理。本文开展了以304不锈钢及钼铁为熔融物材料,水为冷却剂材料的热相互作用实验研究。该实验研究了高熔点物质质量、材料性质及冷却剂过冷度对热相互作用的影响,通过实验产物的形貌及尺寸分布分析,提出高熔点物质的凝固效应是决定相互作用强弱的重要机制,同时分析了在不同工况下的相互作用机理,为熔融物热能-机械能转化研究奠定基础。
[Abstract]:The interaction between high temperature melt and low temperature coolant is an important phenomenon in the serious accident of nuclear reactor. A lot of experiments and numerical studies have been carried out in the world for many years. However, the mechanism of thermal interaction between melt and coolant (FCI) has not been clarified, and there is still a big gap between the analysis results of numerical simulation and the experimental data. In this study, the influencing factors of FCI and the mechanism of thermal interaction between molten material and coolant were studied by establishing an experimental bench for the interaction between molten material and coolant. In this paper, the thermal interaction of 304 stainless steel and ferromolybdate as molten material and water as coolant was studied. The effects of high melting point material quality, material properties and coolant undercooling on thermal interaction were studied. The morphology and size distribution of the experimental products were analyzed. It is pointed out that the solidification effect of high melting point substances is an important mechanism to determine the intensity of interaction. At the same time, the interaction mechanism under different working conditions is analyzed, which lays a foundation for the study of thermal energy conversion of molten materials.
【作者单位】： 上海交通大学机械与动力工程学院;
【基金】：国家科技重大专项项目(2013ZX06004008-006)
【分类号】：TL364.4
，
本文编号：2490309
[Abstract]:The interaction between high temperature melt and low temperature coolant is an important phenomenon in the serious accident of nuclear reactor. A lot of experiments and numerical studies have been carried out in the world for many years. However, the mechanism of thermal interaction between melt and coolant (FCI) has not been clarified, and there is still a big gap between the analysis results of numerical simulation and the experimental data. In this study, the influencing factors of FCI and the mechanism of thermal interaction between molten material and coolant were studied by establishing an experimental bench for the interaction between molten material and coolant. In this paper, the thermal interaction of 304 stainless steel and ferromolybdate as molten material and water as coolant was studied. The effects of high melting point material quality, material properties and coolant undercooling on thermal interaction were studied. The morphology and size distribution of the experimental products were analyzed. It is pointed out that the solidification effect of high melting point substances is an important mechanism to determine the intensity of interaction. At the same time, the interaction mechanism under different working conditions is analyzed, which lays a foundation for the study of thermal energy conversion of molten materials.
【作者单位】： 上海交通大学机械与动力工程学院;
【基金】：国家科技重大专项项目(2013ZX06004008-006)
【分类号】：TL364.4
，
本文编号：2490309
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