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Published: 2020-06-15
Abstract Views: 138
Views PDF: 47
DOI: https://doi.org/10.53747/jnst.v10i2.33
Issue
Vol. 10 No. 2 (2020)
Section
Articles
How to Cite
Hoang Tan, H., Bui Thi, H., & Hoang Minh, G. (2020). Numerical Investigation of Fluid – Structure Interaction (FSI) on Sodium Leakage Accident at Prototype Fast Breeder Reactor Monju. Nuclear Science and Technology, 10(2), 15-25. https://doi.org/10.53747/jnst.v10i2.33

Numerical Investigation of Fluid – Structure Interaction (FSI) on Sodium Leakage Accident at Prototype Fast Breeder Reactor Monju

Hoang Tan Hung1, Bui Thi Hoa1, Hoang Minh Giang1
1 Institute for Nuclear Science and Technology, 179 Hoang Quoc Viet, Nghia Do, Cau Giay, Ha Noi

Main Article Content

Abstract

This study presents a numerical investigation of fluid-structure interaction about sodium leakage accident at prototype fast breeder reactor Monju. The dynamic forces of sodium liquid flow acting on the thermowell are the main cause of fatigue failure, which leads to the occurrence of thermowell cracking due to intense stresses and high fatigue-cycle. Since the location and magnitude of these stresses are unknown, an analysis of the vibrational characteristics and stresses caused by FSI was performed by using ANSYS to prevent similar accidents in the future. The most dangerous case was found for FSI analysis by comparisons between the natural frequency of thermowell and vortex shedding frequency at several operating conditions. The results showed that a stress concentration location is similar to the location of broken thermowell, and the amplitude of stress is large enough for fatigue damage.

Article Details

Keywords

Monju, Sodium leakage accident, FSI, ANSYS

References

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