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。
For the leakage of high pressure air cooler tubes caused by corrosion, the effect of hydrodynamic 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 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 transition structures is studied, which would provide helpful reference for the improvement of air cooler tubes.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2007年第4期104-107,127,共5页
Nuclear Power Engineering
关键词
空气冷却器
管束
冲刷腐蚀
CFD模拟
结构优化
Air cooler, Tubes, Erosion-corrosion, CFD simulation, Structure optimization
