Numerical investigation on deposition characteristics of ferroferric oxide particles fouling in 2 × 2 petal-shaped fuel rod

IF 2.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Annals of Nuclear Energy Pub Date : 2025-09-01 Epub Date: 2025-04-10 DOI:10.1016/j.anucene.2025.111457

Yu Zhao, Jian Zheng, Zhizhong Tan

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Abstract

The corrosion products migrate with the coolant and deposit on the surface of fuel elements during the operation of a pressurized water reactor, which have a significant impact on the safety and economics of pressurized water reactors. In this paper, the mathematical model was constructed to investigate flow deposition characteristics of ferroferric oxide (Fe₃O₄) particles in a 2 × 2 petal-shaped fuel rod bundle channel. The results show that the simulated results agree well with the experimental data. The particle fouling resistance converges to an asymptotic value with the increasing time. As the residence time of particles shortens and the fluid friction velocity amplifies, the fouling resistance exhibits a downward trend concomitant with the increase in flow rate. It decreases with the increases of the particle size and increases with the increasing particle concentration. However, the effect of fluid viscosity on fouling resistance may be ignored.

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2 × 2花瓣状燃料棒中氧化铁铁颗粒沉积特性的数值研究

压水堆运行过程中，腐蚀产物随冷却剂迁移并沉积在燃料元件表面，对压水堆的安全性和经济性产生重大影响。本文建立数学模型，研究了2 × 2花瓣状燃料棒束通道中氧化铁（Fe3O4）颗粒的流动沉积特性。结果表明，模拟结果与实验数据吻合较好。随着时间的增加，颗粒污垢阻力收敛于一个渐近值。随着颗粒停留时间的缩短和流体摩擦速度的增大，污垢阻力随流量的增大呈下降趋势。随粒径的增大而减小，随颗粒浓度的增大而增大。然而，流体粘度对结垢阻力的影响可能被忽略。

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.