Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

The Theoretical Investigation of the Natural Frequency Coefficients for a Thin Rectangular Tube used in the Heat Exchanger

열교환기에 사용되는 얇은 사각 단면 튜브의 고유규진동계수에 대한 이론적 분석

  • 김기만 (금오공과대학, 기계공학과)
  • Published : 1995.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

From the viewpoint of the structural design, the principal problem of the heat exchanger is the potentiality of structural instabilities due to the fluid loading effect during operations. Excessive fluid loading may give rise to permanent deformation of tube and would enentually result in collapse of heat exchanger, which would cause an obstruction of the fluid flow in the narrow channels. In this study, a fluid-structural interaction model was developed to investigate analtically the vibration characteristics of thin rectangular tube used in the heat exchanger. The model consists of two flat plates separated by fluid. The effects of the fluid in the tube was stuided. For analyses, the natural frequency coefficients of the model were investigated for the plate aspect ratios, channel heights, and boundary conditions. As conclusions, the natural frequency coefficients of the tube is found to be affected largely by the fluid loading and the channel heights.

Keywords

References

  1. SAE Trans. 880047. v.97 High Performance Evaporatoer Development Ohara,T.;Takahashi,T.
  2. SAE Trans. 880445. v.97 Compact Air Cooled Air Conditioning Condenser Goodremote,C.E.;Guntly,L.A.;Costello,N.F.
  3. SAE Trans. 880449. v.97 Louvered Fin Heat Sinks for Automotive Electronic Applications Dage,G.
  4. J. of Ship Research v.22 no.2 A finite- element method applied to the vibration of submerged plates Marcus,M.S.
  5. J. of Ship Research v.9 no.1 Elastic vibration characteristics of cantilever plates in water Lindholm,B.;Kane,D.D.;Chu,W.H.;Abramlson,H.N.
  6. J. of Ship Research v.14 no.2 Added masses of thin rectangular plates calculated from potenial theory Meyerhoff,W.K.
  7. SAE Technical Paper, #870183 Stress Distribution and Stress Reduction in Copper/Brass Radiators Webb,R.L.;Yu,W.F.
  8. Sound and Structural Vibrations Fahy,F.
  9. Theory and Analysis of Plates-Classical and Numerical Methods Szilard,R.
  10. J. of Sound and Vibrations v.57 no.3 On the Effcet of different edge flewibility coefficients on transverse vibrations of thin, rectangular plates Laura,P.A.A.;Luisoni,L.E.;Ficcadenti,G.
  11. J. of Sound and Vibrations v.67 no.4 Free vibration of ectangular plates with edges having different degrees of rotational restaint Mukhopadhyay,M.
  12. J. of Sound and Vibrations v.52 no.1 Vibration and scoustic radiation of elastically uspported rectangular plates Lomas,N.S.;Hayek,S.I.
  13. J. of Sound and Vibrations v.15 no.1 Low Frequency Random Excitation of Water-Loaded Rectangular Plates Davis,H.G.
  14. J. Acoust, Soc. AM. v.56 no.2 Intermodal Coupling Coefficients for a Fluid-Loaded Rectangular Plate Pope,L.D.;Leibowitz,R.C.
  15. Methods of Theoretical Physics Morse;Feshbach
  16. Sound, Structures, and Their Interaction Junger;Feit