Experimental study on molten metal spreading and deposition behaviors
Experimental study on molten metal spreading and deposition behaviors
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DOI：
10.1016/j.anucene.2018.04.036
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发表时间：
2018-08-01
影响因子：
1.9
通讯作者：
Hibiki, Takashi
中科院分区：
文献类型：
--
作者：
Ogura, Takahito;Matsumoto, Tatsuki;Hibiki, Takashi
本文介绍了在北海道大学使用高频感应加热器进行的熔融金属铺展行为的实验研究，以解决熔融金属铺展的基本行为和干燥平板上的沉积行为。以铜熔体为试验样品，获得了不同高度、不同喷嘴尺寸和不同初始温度下金属熔体在干燥不锈钢板上下落的数据集。在扩展过程中，利用高速热像仪测量了金属液表面温度。在凝固后立即测量凝固的熔融金属的铺展面积和沉积厚度。基于所获得的数据库，进行量纲分析，以确定负责熔融金属蔓延的关键参数。从所获得的数据库，新的实验相关性开发，这是能够预测的蔓延面积在合理的精度。本文的分析提供了熔融金属扩散和沉积行为的特征信息，这将有助于在严重事故分析的堆芯再定位问题。(C)2018爱思唯尔有限公司版权所有。
In this paper, experimental investigation of the molten metal spreading behavior that was carried out at Hokkaido University using high frequency inductive heater is presented to address the fundamental behavior of the molten metal spreading and deposition behaviors on dry flat plate. Molten copper was utilized as a test sample, and dataset was obtained for the falling molten metal on dry stainless-steel plate at various elevations, nozzle sizes and initial temperatures. During the spreading transient, highspeed thermo-camera was utilized to measure the molten metal's surface temperature. Immediately after the solidification, solidified molten metal's spread area and deposition thickness were measured. Based on the database obtained, dimensional analysis was conducted to identify the key parameters responsible for the molten metal spreading. From the obtained database, new experimental correlation was developed which is capable of predicting the spreading area at reasonable accuracy. Present analysis provides characteristic information of molten metal spreading and deposition behaviors which will be useful for the corium relocation problem in severe accident analysis. (C) 2018 Elsevier Ltd. All rights reserved.