Nuclear Engineering and Technology

  • 제35권1호
  • /
  • Pages.1-13
  • /
  • 2003
  • /
  • 1738-5733(pISSN)
  • /
  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
권호 표지

Estimation of Beam Mode Frequencies of Co-axial Cylinders Immersed in Fluid by Equivalent Mass Approach

  • 발행 : 2003.02.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, an effective method to estimate the fundamental frequencies of co-axial cylinders immersed in fluid is proposed. The proposed method makes use of the equivalent mass or density that is derived from the added mass matrix caused by the fluid-structure interaction (FSI) phenomenon. The equivalent mass is defined from the added mass matrix based on a 2-D potential flow theory. The theory on two co-axial cylinders extended to the case of three cylinders. To prove the validity of the proposed method, the eigenvalue analyses upon coaxial cylinders coupled with fluid gaps are peformed using the equivalent mass. The analyses results upon various fluid gap is conditions reveal that the present method could provide accurate frequencies and be suitable for expecting the fundamental frequencies of fluid coupled cylinders in beam mode vibration.

키워드

참고문헌

  1. S.J. Brown, 'A Survey of Studies into the Hydrodynamic Response of Fluid-Coupled Circular Cylinders', J. of Pressure Vessel Technology, Vol. 104, No. 3, (1982)
  2. S.S. Chen and G.S. Rosenberg, 'Dynamics of a Coupled Shell-Fluid System', Nuclear Engineering and Design, Vol. 32, pp. 302-310, (1975) https://doi.org/10.1016/0029-5493(75)90101-6
  3. S.S. Chen and Ho Jung, 'Design Guide for Calculating Hydrodynamic Mass Part I : Circular Cylindrical Structure, ANL-CT-76-45, Argonne National Laboratory, (1976)
  4. M. K. Au-Yang, 'Free Vibration of Fluid-Coupled Coaxial Cylindrical Shells of Different Lengths', J. of Applied Mechanics, Vol. 43, pp.480-484, (1976) https://doi.org/10.1115/1.3423895
  5. M.K. Au-Yang and J.E. Galford, 'A Structural Priority Approach to Fluid-Structure Interaction Problem', Vol. 103, J. of Pressure Vessel Technology, pp.142-150, (1981) https://doi.org/10.1115/1.3263379
  6. R.J. Fritz, 'The Effect of Liquids on the Dynamic Motions of Immersed Solids', J. of Engineering for Industry, pp. 167-173, (1972)
  7. T.R. Kim et al., 'The Study on the Change in Dynamic Characteristics of Reactor Internals, KAERI/RR-1267/93, Korea Atomic Energy Research Institute, (1993).
  8. S. Perov, E.Altstadt and M. Werner, 'Vibration Analysis of the Pressure Vessel Internals of WWER-1000 Type Reactors with Consideration of Fluid-Structure Interaction', Vol. 27, Annals of Nuclear Energy, pp. 1441-1457, (2000) https://doi.org/10.1016/S0306-4549(00)00010-4
  9. ANSYS, Inc., 'ANSYS User's Manual', (2001)
  10. ASME, 'ASME Boiler and Pressure Vessel Code', Sec III, Division 1, Appendix N Dynamic Analysis, N-1450, (1989)
  11. ASCE, 'Seismic Analysis of Safety-Related Nuclear Structures and Commentary on Standard for Seismic Analysis of Safety Related Nuclear Structures', (1986)
  12. Seismic Analysis of Safety-Related Nuclear Structures and Commentary on Standard for Seismic Analysis of Safety Related Nuclear Structures ASCE