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Published: 2020-06-15
Abstract Views: 92
Views PDF: 27
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

[1]. H. Mikami, A. Shono and H. Hiroi, “Sodium Leak at Monju (I) - Cause and Consequences”, Tech. Committee Meeting on Evaluation of Radioactive Materials Release and Sodium Fires in Fast Reactors, Oaria, Ibaraki, Japan, International Atomic Energy Agency, Vienna, Austria, 1996.
[2]. Masaya Kondo, Yoshinari Anoda, “Water Flow Simulation Test on Flow – Induced Oscillation of Thermowell in Prototype Fast Breeder Reactor MONJU”, JSME International Journal, Serires B, Vol.4, No.4, 2001.
[3]. Hideki Aoi, Yue Zhao, Tamotsu Hayase, “Improvement of the Damaged Thermowell of the Monju Fast-Breeder Reactor Based on Vibration Analysis”, The Society for Modeling and Simulation International, SIMULATION, Vol. 78, Issue 8 , p. 504-511, 2002.
[4]. Sebastian Kornet, Daniel Sławiński, Paweł Ziółkowski, Janusz Badur, “Analysis of unsteady flow forces on the thermowell of steam temperature sensor”, Transactions of the Institute of Fluid-Flow Machinery, No. 129, p. 25–49, 2015.
[5]. AISI Type 304 Stainless Steel, [online] Available at:
http://www.matweb.com/search/datasheet.aspx?matguid=bd20a4281ae3430d97cfbebf6904ec50&ckck=1.
[6]. Masaki Morishita, Yusaku Wada, “Fatigue analysis of thermowell due to flow – induced vibration”, Flow – Induced Vibration and Transient Thermal – Hydraulics, ASME International, p. 120, 1998.
[7]. J.K.Fink, L.Leibowitz, “Thermodynamic and Transport Properties of Sodium Liquid and Vapor”, Argonne National Laboratory, pp. 86-95 and p. 207, 1995.
[8]. A.Miyakawa, H.Maeda, Y.Kami, K.Ito, “Sodium Leakage Experience at the Prototype FBR Monju”, Unusual Occurrences during LMFR Operation, IAEA-TECDOC-1180, Vienna (Austria), p. 43 -56, 1998.
[9]. Anton Gustafsson, “Analysis of Vortex-Induced Vibrations of Rises”, Master’s thesis in Applied Mechanics, Chalmers University Of Technology, Sweden 2012.
[10]. Brauschke D., Wiklund D., Kitzman A., Zulic D., “Thermowell calculations”, Emerson Process Management, White Paper 00840–0200–2654, Rev AC, p. 11, March 2014.
[11]. ANSYS Tutorials & Training Materials, “Fluid Structure Interaction FSI with
ANSYS Fluent 17.0” and “ANSYS Mechanical Linear and Nonlinear Dynamic”, ANSYS Inc, 2016.
[12]. Glu ̈ck, M., Breuer, M., Durst, F., Halfmann, A., Rank, E., “Computation of fluid–structure interaction on lightweight structures”, Journal of Wind Engineering and Industrial Aerodynamics 89, p. 1351–1368, 2001.