https://doi.org/10.1051/epjconf/202533201004
Numerical simulation of corrosion product particle deposition in once-through steam generators
China Nuclear Power Technology Research Institute, Shenzhen, 518000, China
* Corresponding author: caochengque@126.com
Published online: 9 July 2025
The Once-Through Steam Generator (OTSG), characterized by its compact design and superior heat transfer efficiency, presents complex flow dynamics that influence particle deposition. This study investigates the deposition behavior of corrosion product particles in the OTSG of nuclear power plants using CFD simulations. The numerical model considers key forces acting on particles, including gravity, buoyancy, thermophoretic force, and drag force. Results indicate that particle deposition is more prevalent in the upper helical tube regions, leading to compromised heat transfer and increased radioactive source accumulation. Notably, outer helical tubes exhibit higher deposition rates compared to inner tubes due to lower fluid velocities. Particle size significantly affects deposition probability, with particles ranging from 0.8 to 2.4 μm being most susceptible.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
