采用数值计算法与实验研究相结合，对碳钢在3.5%NaCl溶液中层流态下的腐蚀进行了研究.结果表明:用材料表面近壁处的流体力学参数(剪切应力τ、传质系数κ）比主体中的流体力学参数（流速υ）更能准确反映流体对材料腐蚀的影响。针对旋转圆盘体系中的流动体系，建立了流体腐蚀的数学模型，并进行了计算和分析。模拟计算的流体腐蚀速度值与实测值基本吻合，从而验证了所揭示的碳钢在单相流体中的腐蚀机理。
The corrosion of carbon steel in 3.5% NaCl solution under laminar condition was studied by combination of numerical method with experimental measureent. The results showed that the hydrodynamic parameters close to the material surface (shear stress τ,ass transfer coefficient κ)can describe more accurately the effect of flowing fluid on corrosion of material than those in bulk solution(flow velocity υ).Numeration and analysis were carried out on the basis of a mathematical model for flow-induced corrosion occured in rotating disk apparatus.It was found that the corrosion rate obtained from numerical method was almost equal to the measured corrosion rate,and that the corrosion mechanism of carbon steel in flowing single phase solution was further verified by numerical results.
参考文献
| [1] | |
| [2] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%