核电行业中流动促进腐蚀的模型和数值模拟研究进展
[align=center]刘春波,郑玉贵中国科学院金属研究所金属腐蚀与防护国家重点实验室,沈阳110016[/align]
摘要:对核电行业中流动促进腐蚀的现象、危害、现有模型和不同的数值模拟方法进行了介绍和评述,并指出了下一步的主要研究方向.
关键词:流动促进腐蚀( FAC) ;核电;模型;数值模拟
中图分类号: TG17219 文献标识码:A
文章编号: 100226495 (2008) 0620436204
[align=center]RESEARCH PROGRESS ONMODEL ING AND NUM ERICAL
S IMULATION OF FLOW 2ACCELERATED 2CORROS ION
L IU Chun2bo, ZHENG Yu2gui
S tate Key Laboratory for Corrosion & Protection, Institute ofM etal Research, Chinese Academ y of Sciences, Shenyang 110016[/align]
Abstract: Flow2Accelerated2Corrosion ( FAC) is a phenomenon which results in weight loss aswell as lo2
cal thinning of p ip ing, vessels, and equipmentmade of carbon steels. FAC occurs under certain conditions
of flow, chemistry, geometry and material. Those conditions are common for the high2energy p ip ing in nu2
clear and fossil2fueled power p lants. This paper reviews several FAC models and numerical simulation
methods. Meanwhile, the p rospective points in further studies on the modeling and numerical simulations
of FAC are also brought forward.
Keywords: Flow2Accelerated2Corrosion ( FAC) ; nuclear power industry;model; numerical simulation
核电行业中的流动促进腐蚀( Flow2accelerated corrosion,FAC) (有些文献中也称之为冲刷腐蚀, Erosion2corrosion)是由于单相液流或汽/液双相流将碳钢或者低合金钢表面的保护性氧化膜溶解,而造成氧化膜减薄并引起碳钢或者低合金钢腐蚀速率增大的现象[ 1 ] ,表现为碳钢管或低合金管的“局部”( ～1 m)减薄(腐蚀速率高达3 mm / a) ,进而发生突然破裂和灾难性事故.
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