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2008 | Vol. 60, nr 6 | 475-490
Tytuł artykułu

Aerodynamic characteristics of two-dimensional sharp-edged objects in tandem arrangement

Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Konferencja
Polish Conference of Fluid Mechanics (18 ; 21-25.09.2008 ; Jastrzębia Góra, Poland)
Języki publikacji
EN
Abstrakty
EN
The present analysis addresses the problem of the aerodynamic loads of two prismatic bodies in tandem arrangement. Two identical square cross-section prismatic bodies arranged in tandem are considered and represent a two-dimensional configuration. The program of the study consists of parallel wind-tunnel experiments and numerical simulation performed with the use of a phase-averaged form of k-epsilon turbulence model in RNG version. The simulations revealed a strong dependence between the interference of the wake flow around the system of sharp-edged bluff-bodies, the vorticity structure of the separation region, mean position of the reattachment point, phase-averaged velocity field and skin friction variability. The general aim was to establish a direct link between the flow around bluff bodies, local time-resolved quantities like skin friction and surface pressure, and near-wake behaviour behind the square cylinders in tandem array. In particular, it was found that periodical flow disturbances bring about a rapid growth of surface pressure and wall shear stress fluctuations.
Wydawca

Rocznik
Strony
475-490
Opis fizyczny
Bibliogr. 19 poz.
Twórcy
Bibliografia
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  • 2. M.M. ALAM, Y. ZHOU, Phase lag between vortex sheddings from two tandem bluff bodies. Journal of Fluids and Structure, 23, 2, 339-347, 2007a.
  • 3. H. HANG AN, B.J. ViCKERY, Buffeting of two-dimensional bluff bodies. Journal of Wind Engineering and Industrial Aerodynamics, 82. 173-187, 1999.
  • 4. 11. HAVEL, H. HANGAN, R. MARTINUZZI, Buffeting for 2d and 3d sharp-edged bluff bodies, Journal of Wind Engineering and Industrial Aerodynamics, 89, 1369-1381, 2001.
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  • 7. W. JESTER, Y. KALLINDERIS, Numerical study of incompressible flow about fixed cylinder pairs, Journal Fluids and Structures, 17, 557-567, 2003.
  • 8. T. KlTAGAWA, H. OHTA, Numerical investigation on flow around circular cylinders in tandem arrangc'nie'nt at a subcritical Reynolds number, Journal of Fluids and Structures, 24, 680-699, 2008.
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  • 15. H. SAKAMOTO, II. HANIU, Effect of free-stream turbulence on characteristics of fluctuating forces acting on two square prisms in tandem arrangement, J. Fluids Eng., 110, 140-146, 1988.
  • 16. D. SUMNER, S..J. PRICE, M.P. PAIDOUSSIS, Tandem cylinders in impulsively started flow, .Journal of Fluids and Structures, 13, 955-965, 1999.
  • 17. D. SUMNER, M. D. RICHARDS, O. O. AKOSILE , Two staggered circular cylinders of equal diameter in cross-flow, Journal of Fluids and Structures, 20, 255-276, 2005.
  • 18. S.C. YEN, K.C. SAN, T.H. CHUANG, Interactions of tandem square cylinders at low Reynolds numbers, Experimental Thermal and Fluid Science, 32, 927-938, 2008.
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT7-0014-0011
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