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首页> 外文会议>American Society of Mechanical Engineers(ASME) Summer Heat Transfer Conference(HT2005) vol.2; 20050717-22; San Francisco,CA(UA) >MODELING OF STEAM EXPLOSION IN PARTIALLY FLOODED PWR REACTOR CAVITY
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MODELING OF STEAM EXPLOSION IN PARTIALLY FLOODED PWR REACTOR CAVITY

机译：部分淹没压水堆反应堆中蒸汽爆炸的模型

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摘要

When the hot molten core comes into contact with the water in the reactor cavity a steam explosion can occur. The steam explosion might be triggered during some scenarios of severe nuclear reactor accidents, when extremely hot molten nuclear fuel interacts with the coolant water. A highly energetic steam explosion in a nuclear power plant could cause the containment failure and the release of radioactive fission products to the environment. The purpose of the performed analysis is to provide a first estimation of the expected pressure loadings on the typical PWR cavity structures during a steam explosion. To achieve this, the fit-for-purpose steam explosion model is proposed, followed by a Computational Fluid Dynamics (CFD) analysis. In the present work two steam explosion scenarios in the partially flooded Pressurized Water Reactor (PWR) cavity were simulated with the general purpose code CFX-5 [1] to estimate pressure loadings on cavity walls.
机译：当热的熔融核芯与反应堆腔中的水接触时，会发生蒸汽爆炸。当极热的熔融核燃料与冷却水相互作用时，可能会在严重的核反应堆事故的某些情况下引发蒸汽爆炸。核电厂中发生的高能蒸汽爆炸可能会导致安全壳失效并向环境释放放射性裂变产物。进行分析的目的是对蒸汽爆炸过程中典型PWR腔体结构上的预期压力载荷进行初步估算。为此，提出了适合用途的蒸汽爆炸模型，然后进行了计算流体动力学（CFD）分析。在本工作中，使用通用代码CFX-5 [1]在部分注满的压水堆（PWR）腔中模拟了两个蒸汽爆炸场景，以估计腔壁上的压力负荷。

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