한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제19권3호
  • /
  • Pages.92-98
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  • 2021
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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합성난류경계층이 벽면에서의 변동압력에 미치는 영향

Effects of Synthetic Turbulent Boundary Layer on Fluctuating Pressure on the Wall

  • Yi, Y.W. (School of Mech. Eng., Pusan Nat. Univ.) ;
  • Lee, D.S. (Agency for Defense Dev.) ;
  • Shin, K.K. (Agency for Defense Dev.) ;
  • Hong, C.S. (School of Mech. Eng., Ulsan College) ;
  • Lim, H.C. (School of Mech. Eng., Pusan Nat. Univ.)
  • 투고 : 2021.11.27
  • 심사 : 2021.12.09
  • 발행 : 2021.12.31
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초록

Large Eddy Simulation (LES) has been popularly applied and used in the last several decades to simulate turbulent boundary layer in the numerical domain. A fully developed turbulent boundary layer has also been applied to predict the complicated wake flow behind bluff bodies. In this study we aimed to generate an artificial turbulent boundary layer, which is based on an exponential correlation function, and generates a series of realistic three-dimensional velocity data in two-dimensional inlet section which are correlated both in space and in time. The results suggest its excellent capability for high Reynolds number flows. To make an effective generation, a hexahedral mesh has been used and Cholesky decomposition was applied to possess suitable turbulent statistics such as the randomness and correlation of turbulent flow. As a result, the flow characteristics in the domain and fluctuating pressure near the wall are very close to those of fully developed turbulent boundary layers.

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과제정보

본 논문의 주요 내용은 국방과학연구소의 지원을 받아 수행되었습니다(UD190002DD).

참고문헌

  1. Kovasznay, L. S., 1970, "Turbulent Boundary Layer", Annual Review of Fluid Mechanics, Vol. 2(1), pp. 95-112. https://doi.org/10.1146/annurev.fl.02.010170.000523
  2. Willmarth, W. W., 1975, "Pressure Fluctuations beneath Turbulent Boundary Layers," Annual Review of Fluid Mechanics, Vol.7(1), pp. 13-38. https://doi.org/10.1146/annurev.fl.07.010175.000305
  3. Kline, S. J., Reynolds, W. C., Schraub, F. A., and Runstadler, P. W., 1979, "The structure of turbulent boundary layers," Journal of Fluid Mechanics, Vol.30(4), pp. 741-773. https://doi.org/10.1017/S0022112067001740
  4. Sreenivasan, K. R., 1989, "The turbulent boundary layer," Frontiers in experimental fluid mechanics. Springer, Berlin, Heidelberg, pp. 159-209.
  5. Kline, S. J. and Robinson, S. K., 1990, "Quasi coherent structures in the turbulent boundary layer. I-Status report on a community-wide summary of the data," Near-wall turbulence, pp. 200-217.
  6. Lim, H. C., 2007, "Flow Structure on the Roof of a Cube Placed in a Turbulent Boundary Layer," J. Wind Eng. Ins. Korea, Vol. 11(2), pp. 153-159.
  7. Kim, J. H., Jeong, S. W., Ahn, B. K., Park, C. S., and Kim, G. D., 2018, "Numerical Analysis of Unsteady Cavitating Vortex around Two-dimensional Wedge-shaped Submerged Body", Journal of Ocean Engineering and Technolgy, Vol. 32(1), pp. 36-42. https://doi.org/10.26748/KSOE.2018.2.32.1.036
  8. Kim, J. N. and Sung, H. J., 2006, "Wall pressure fluctuations and flow-induced noise in a turbulent boundary layer over a bump", Journal of fluid mechanics, Vol. 558(10), pp. 79-102. https://doi.org/10.1017/S002211200600989X
  9. Shin, K. K. and Hong, C. S. and Lee, H. G., 1996, "A study of Flow Induced Noise for Multilayered Cylinder due to Turbulent Boundary Layer", Journal of KSNVE, Vol. 6(5), pp. 671-677.
  10. Hong, C. S., Shin, K. K., and Kim, S. Y., 2001, "A Modelling of Structural Excitation Forces Due to Wall Pressure Fluctuations in a Turbulent Boundary Layer", Journal of KSNVE, Vol. 11(2), pp. 226-233.
  11. Yoshizawa, A., 1986, "Statistical theory for compressible turbulent shear flows, with the application to subgrid modeling", The Physics of fluids, Vol. 29(7), pp. 2152-2164. https://doi.org/10.1063/1.865552
  12. Lee, Y. T. and Lim, H. C., 2017, "Effect of Inflow Length Scales on the Generation of Turbulent Boundary Layer Flow", J. Wind Eng. Ins. Korea, Vol. 21(4), pp. 171-178.
  13. Lund, T. S., Wu, X., and Squires, K. D., 1998, "Generation of turbulent inflow data for spatiallydeveloping boundary layer simulations", Journal of Computational Physics, Vol. 140(2), pp. 233-258. https://doi.org/10.1006/jcph.1998.5882
  14. Moser, R. D., Kim, J., and Mansour, N. N., 1999, "Direct numerical simulation of turbulent channel flow up to Reτ= 590", Physics of fluids, Vol. 11(4), pp. 943-945. https://doi.org/10.1063/1.869966
  15. Lee, Y. T., Gutti, L. K., and Lim, H. C., 2021, "Numerical Study of the Influence of the Inlet Turbulence Length Scale on the Turbulent Boudnary Layer", Applied Sciences, Vol. 11(11), pp. 1-23.
  16. Kim, Y. S. and Castro, I. P., and Xie, Z. T., 2013, "Divergence-free turbulence inflow conditions for large-eddy simulations with incompressible flow solvers", Computers & Fluids, Vol. 84, pp. 56-68. https://doi.org/10.1016/j.compfluid.2013.06.001
  17. Kim H., Kline, S. J., and Reynolds, W. C., 1971, "The production of trubulence near a smooth wall in a turbulent boundary layer", Journal of Fluid Mechanics, Vol. 50(1), pp. 133-160. https://doi.org/10.1017/S0022112071002490
  18. Del Alamo, J. C. and Jimenez, J., 2009, "Estimation of turublent convection velocities and corrections to Taylor's approximation", Journal of Fluid Mechanics, Vol. 640, pp. 5-26. https://doi.org/10.1017/S0022112009991029