A new procedure for solving the transport of corrosion products in liquid lead bismuth eutectic loop

IF 4.2 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
YaoDi Li, Mei Huang, Boxue Wang, Xiangyuan Meng, YanTing Cheng
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Abstract

This article presents an extension of the Half Boundary Method (HBM) for solving two-dimensional mass transfer problems in a lead-bismuth eutectic (LBE) loop. We propose a procedure that integrates the Finite Volume Method (FVM) with the HBM coupling algorithm to address flow and mass transfer issues. The FVM is used to solve the velocity field, while a small number of nodes are selected within the solution domain to apply HBM for solving the concentration field. By reducing the number of grids required by HBM, the maximum order of the matrix is also reduced, leading to savings in computational storage and improved efficiency. The proposed procedure is applied to solve the transport problem of corrosion products (Fe) in the hot pipe section of the UPBEAT circuit. By comparing different flow and oxygen control conditions, we find that the corrosion rate increases with velocity. Under oxygen control, the concentration of corrosion products is only 0.5 % of that under anaerobic conditions, and the corrosion rate is reduced to only 0.19 %. These findings significantly reduce the corrosion rate, making long-term pipeline use feasible.
求解液态铅铋共晶回路中腐蚀产物输运的新方法
本文提出了求解铅铋共晶(LBE)环中二维传质问题的半边界法(HBM)的一种扩展。我们提出了一个程序,将有限体积法(FVM)与HBM耦合算法相结合,以解决流动和传质问题。采用FVM求解速度场,在解域中选取少量节点,采用HBM求解浓度场。通过减少HBM所需的网格数量,矩阵的最大阶数也降低了,从而节省了计算存储并提高了效率。应用该方法解决了热管段腐蚀产物(Fe)的输运问题。通过比较不同的流量和氧气控制条件,我们发现腐蚀速率随速度的增加而增加。在氧气控制下,腐蚀产物的浓度仅为厌氧条件下的0.5%,腐蚀速率仅为0.19%。这些发现显著降低了腐蚀速率,使管道长期使用成为可能。
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来源期刊
Engineering Analysis with Boundary Elements
Engineering Analysis with Boundary Elements 工程技术-工程:综合
CiteScore
5.50
自引率
18.20%
发文量
368
审稿时长
56 days
期刊介绍: This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods. Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness. The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields. In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research. The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods Fields Covered: • Boundary Element Methods (BEM) • Mesh Reduction Methods (MRM) • Meshless Methods • Integral Equations • Applications of BEM/MRM in Engineering • Numerical Methods related to BEM/MRM • Computational Techniques • Combination of Different Methods • Advanced Formulations.
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