高压空气冷却器管束冲蚀破坏的数值模拟及其结构优化

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Numerical Simulation for Erosion-Corrosion Damage and Structure Optimization of High Pressure Air Cooler Tubes

College of Mechanical and Power Engineering, Nanjing University of Technology, 210009, China

摘要: 针对高压空气冷却器管束易发生由腐蚀引起的泄漏事故,本文以某公司高压空气冷却器为例,应用计算流体力学(CFD)商用软件Fluent对空气冷却器管束内的流动进行了模拟。计算过程采用标准k-ε湍流模型及SIMPLEC算法。分析了流体力学冲刷对腐蚀过程的作用,并找出管道冲蚀破坏严重的位置。计算模拟结果与实际管道的检测结果吻合较好。同时,本文研究了不同过渡结构的管束内流体的流动特性,为空气冷却器管束的结构优化提供了一定的依据。
- 空气冷却器 /
- 管束 /
- 冲刷腐蚀 /
- CFD模拟 /
- 结构优化
Abstract: For the leakage of high pressure air cooler tubes caused by corrosion,the effect of hydrody-erosion-corrosion,standard k-ε turbulence model and SIMPLEC method are adopted.The numerical results are in good agreement with the inspection of tube.Furthermore,the flow characteristics in tubes of different namic erosion on process of corrosion is analyzed by CFD simulation that is used to simulate actual flow in high pressure air cooler tubes of one corporation.For finding the exact position that was badly damaged by transition structures is studied,which would provide helpful reference for the improvement of air cooler tubes.
- Air cooler /
- Tubes /
- Erosion-corrosion /
- CFD simulation /
- Structure optimization