【摘要】：高溫熔融物與低溫冷卻劑間的相互作用是核反應(yīng)堆嚴(yán)重事故下的重要現(xiàn)象,關(guān)于這一現(xiàn)象,國(guó)際上多年來(lái)開(kāi)展了大量實(shí)驗(yàn)和數(shù)值研究。然而,熔融物與冷卻劑熱相互作用(FCI)的作用機(jī)理至今未能解明,數(shù)值模擬的分析結(jié)果同實(shí)驗(yàn)數(shù)據(jù)間仍存在較大差距。本研究通過(guò)建立中型熔融物與冷卻劑相互作用實(shí)驗(yàn)臺(tái)架,研究FCI影響因素及熔融物與冷卻劑間的熱相互作用機(jī)理。本文開(kāi)展了以304不銹鋼及鉬鐵為熔融物材料,水為冷卻劑材料的熱相互作用實(shí)驗(yàn)研究。該實(shí)驗(yàn)研究了高熔點(diǎn)物質(zhì)質(zhì)量、材料性質(zhì)及冷卻劑過(guò)冷度對(duì)熱相互作用的影響,通過(guò)實(shí)驗(yàn)產(chǎn)物的形貌及尺寸分布分析,提出高熔點(diǎn)物質(zhì)的凝固效應(yīng)是決定相互作用強(qiáng)弱的重要機(jī)制,同時(shí)分析了在不同工況下的相互作用機(jī)理,為熔融物熱能-機(jī)械能轉(zhuǎn)化研究奠定基礎(chǔ)。
[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.
【作者單位】： 上海交通大學(xué)機(jī)械與動(dòng)力工程學(xué)院;
【基金】：國(guó)家科技重大專(zhuān)項(xiàng)項(xiàng)目(2013ZX06004008-006)
【分類(lèi)號(hào)】：TL364.4
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本文編號(hào)：2490309