Modeling of Corrosion and Precipitation in the LBE Flow Loop and Study of Geometric Effects on Local Corrosion Rates

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Corrosion plays an important role in the design of nuclear cooling systems. A Delta Loop was built up in Los Alamos National Lab (LANL) to obtain the experimental data. This loop is a multi-section closed system that differs in diameter from one part to another. Hence an intensive study on the overall and regional corrosion distribution is necessary and valuable. In previous studies, experimental data on this research area is very limited and far from accurate and complete. Simulation and analysis of the above two studies, using a commercial software, are presented in this paper. For analyzing the overall corrosion distribution, the Materials Test Loop has been assumed to be a 5m long toroidal geometry with a circular cross-section. Wall concentrations obtained from previous analytical studies have been used to impose as boundary condition on the model. For analyzing the provincial concentration dissemination, different flow and geometry conditions, have been modeled. The geometries considered are sudden expansion and sudden contraction. At various Reynolds Number and ratio of expansion or contraction, local corrosion rates are presented and analyzed. Results from both the runs have been compared with the theoretical analysis and experimental results that were previously obtained, which seem to be in good tune. The results are beneficial to the future design of the cooling loop to minimize the corrosion at junctions.


Corrosion and anti-corrosives; Eutectic alloys; Lead-bismuth alloys; Nuclear reactors – Cooling

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Corrosion and anti-corrosives; Eutectic alloys; Lead-bismuth alloys


Materials Science and Engineering | Mechanical Engineering | Mechanics of Materials | Nuclear Engineering | Oil, Gas, and Energy




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