Wind and Structures

  • 제15권3호
  • /
  • Pages.247-261
  • /
  • 2012
  • /
  • 1226-6116(pISSN)
  • /
  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical investigations on the turbulence driven responses of a plate in the subcritical frequency range

  • De Rosa, S. (Laboratory for promoting experiences in aeronautical structures and acoustics, Department of Aerospace Engineering, Universita degli Studi di Napoli "Federico II") ;
  • Franco, F. (Laboratory for promoting experiences in aeronautical structures and acoustics, Department of Aerospace Engineering, Universita degli Studi di Napoli "Federico II") ;
  • Gaudino, D. (Laboratory for promoting experiences in aeronautical structures and acoustics, Department of Aerospace Engineering, Universita degli Studi di Napoli "Federico II")
  • 투고 : 2010.10.26
  • 심사 : 2011.08.17
  • 발행 : 2012.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

Some numerical investigations are presented concerning the response of a given plate under turbulence driven excitations. Three different input loads are simulated according to the wall pressure distributions derived from the models proposed by Corcos, Efimtsov and Chase, respectively. Modal solutions (finite element based) are used for building the modal stochastic responses in the sub-critical aerodynamic frequency range. The parametric investigations concern two different values of the structural damping and three values of the boundary layer thickness. A final comparison with available experimental data is also discussed. The results demonstrate that the selection of the adequate TBL input model is still the most critical step in order to get a good prediction.

키워드

참고문헌

  1. Blake, W.K. (1986), Mechanics of Flow-Induced Sound and Vibration, New York, Academic Press.
  2. Bull, M.K. (1996), "Wall pressure fluctuations beneath turbulent boundary layers: some reflections on forty years of research", J. Sound Vib., 190(3), 299-315. https://doi.org/10.1006/jsvi.1996.0066
  3. Chase, D.M. (1980), "Modelling the wavevector-frequency spectrum of turbulent boundary layer wall pressure", J. Sound Vib., 70(1), 29-67. https://doi.org/10.1016/0022-460X(80)90553-2
  4. Ciappi, E., Magionesi, F., De Rosa, S. and Franco, F. (2009), "Hydrodynamic and hydroelastic analyses of a plate excited by the turbulent boundary layer", J. Fluid. Struct., 25(2), 321-342. https://doi.org/10.1016/j.jfluidstructs.2008.04.006
  5. Corcos, G.M. (1963), "Resolution of pressure in turbulence", J. Acoust. Soc. Am., 35(2), 192-199. https://doi.org/10.1121/1.1918431
  6. Corcos, G.M. (1964), "The structure of the turbulent pressure field in boundary-layer flows", J. Fluid Mech., 18(3), 353-379. https://doi.org/10.1017/S002211206400026X
  7. De Rosa, S. and Franco, F. (2008), "Exact and numerical responses of a plate under a turbulent boundary layer excitation", J. Fluid. Struct., 24(2), 212-230. https://doi.org/10.1016/j.jfluidstructs.2007.07.007
  8. De Rosa, S., Franco, F. and Gaudino, D. (2010), "Low frequency range response of a plate to different turbulent boundary layer excitation models", Proceedings of the ISMA Conference on Noise and Vibration Engineering. Leuven, 20-22, September.
  9. Efimtsov, B.M. (1982), "Characteristics of the field of turbulent wall pressure fluctuations at large Reynolds numbers", Soviet Phisics-Acoustics, 28(4),289-292.
  10. Elishakoff, I. (1983), Probabilistic methods in the theory of structures, John Wiley & Sons.
  11. Enable Project (2000), Environmental noise associated with turbulent boundary layer excitation, EU Research Programme FP5, Contract No. G4RD-CT-2000-00223, 2000-2003.
  12. Finnveden, S., Birgersson, F., Ross, U. and Kremer, T. (2005), "A model of wall pressure correlation for prediction of turbulence-induced vibration", J. Fluid. Struct., 20(8), 1127-1143. https://doi.org/10.1016/j.jfluidstructs.2005.05.012
  13. Franco, F., De Rosa, S., Ciappi, E. and Magionesi, F. (2010). Sensitivity of the predictive structural models under stochastic and convective excitation, Proceedings of the 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration & Noise, Montreal, Canada, 1-6 August.
  14. Graham, W.R. (1996a), "Boundary layer induced noise in aircraft, Part I, the flat plate model", J. Sound Vib., 192(1), 101-120. https://doi.org/10.1006/jsvi.1996.0178
  15. Graham, W.R. (1996b), "Boundary layer induced noise in aircraft, Part II, the trimmed flat plate model", J. Sound Vib., 192(1), 121-138. https://doi.org/10.1006/jsvi.1996.0179
  16. Graham, W.R. (1997), "A comparison of models for the wavenumber frequency spectrum of turbulent boundary layer pressures", J. Sound Vib., 206(4), 541-565. https://doi.org/10.1006/jsvi.1997.1114
  17. Ichchou, M.N., Hiverniau, B. and Troclet, B. (2009), "Equivalent 'rain on the roof' loads for random spatially correlated excitations in the mid frequency range", J. Sound Vib., 322(4-5), 926-940. https://doi.org/10.1016/j.jsv.2008.11.050
  18. Newland, D.E. (1984), An introduction to random vibration and spectral analysis, New York, Longman.
  19. Singer, B.A. (1996), Turbulent wall pressure fluctuations: new model for off axis cross spectral density, NASACR 198297.