Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Effects of Rod-roughened Wall on a Turbulent Boundary Layer

막대형 표면조도가 난류경계층에 미치는 영향

  • 이승현 (한국과학기술원 기계공학과) ;
  • 김정훈 (현대중공업 선박저항추진 연구실) ;
  • 도덕희 (한국해양대학교 기계정보공학부) ;
  • 성형진 (한국과학기술원 기계공학과)
  • Published : 2008.07.01
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Abstract

The effects of surface roughness on a turbulent boundary layer (TBL) were investigated using particle image velocimetry (PIV). The roughness elements used were periodically arranged two-dimensional spanwise rods, and the roughness height was ${\kappa}/{\delta}$. Introduction of the roughness elements increased the wake strength and the turbulent stress not only in the roughness sublayer but also in the outer layer. This indicates the existence of interaction between inner and outer layers for 2D rod-roughened wall. Roughness effects on a turbulence structure near the wall were obtained by PIV measurements. Iso-contours of mean velocities and Reynolds stresses in the roughness sublayer showed a very good agreement with previous DNS results.

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References

  1. Perry, A. E., Lim, K. L. and Henbest, S. M., 1987, "An Experimental Study of the Turbulence Structure in Smooth- and Rough-wall Boundary Layers," J. Fluid Mech., Vol. 177, pp. 437-466 https://doi.org/10.1017/S0022112087001034
  2. Raupach, M. R., Antonia, R. A. and Bajagopalan, S., 1991, "Rough-wall Turbulent Boundary Layers," Appl. Mech. Rev., Vol. 44, pp. 1-25 https://doi.org/10.1115/1.3119492
  3. Townsend, A. A., 1976, "The Structure of Turbulent Shear Flow," Cambridge University Press
  4. Flack, K. A., Schultz, M. P. and Shapiro, T. A., 2005, "Experimental Support for Townsend's Reynolds Number Similarity," Phys. Fluids, Vol. 17, 035102 https://doi.org/10.1063/1.1843135
  5. Schultz, M. P. and Flack, K. A., 2007, "The Rough-wall Turbulent Boundary Layer from the Hydraulically Smooth to the Fully Rough Regime," J. Fluid Mech., Vol. 580, pp. 381-405 https://doi.org/10.1017/S0022112007005502
  6. Krogstad, P. .A., Antonia, R. A. and Browne, L. W. B., 1992, "Comparison between Rough- and Smooth-wall Turbulent Boundary Layers," J. Fluid Mech., Vol. 245, pp. 599-617 https://doi.org/10.1017/S0022112092000594
  7. Krogstad, P. .A. and Antonia, R. A., 1999, "Surface Roughness Effects in Turbulent Boundary Layers," Exp. Fluids, Vol. 27, pp. 450-460 https://doi.org/10.1007/s003480050370
  8. Kim, k. c., Ahn, s. h. and Lee, b. k., 1994, “Turbulence Structures of Flow in Concentric Annuli with Rough Outer Wall,” Trans. of the KSME, Vol. 17, No. 9, pp. 2443-2453
  9. Ashrafian, A., Andersson, H. I. and Manhart, M., 2004, "DNS of Turbulent Flow in a Rod-roughened Channel," Int. J. Heat and Fluid Flow, Vol. 25, pp. 373-383 https://doi.org/10.1016/j.ijheatfluidflow.2004.02.004
  10. Bhaganagar, K., Coleman, G. and Kim, J., 2004, "Effect of Roughness on Wall-bounded Turbulence," Flow, Turbulence and Combustion, Vol. 72, pp. 463-492 https://doi.org/10.1023/B:APPL.0000044407.34121.64
  11. Krogstad, P. .A., Andersson, H. I., Bakken, O. M. and Ashrafian, A., 2005, "An Experimental and Numerical Study of Channel Flow with Rough Walls," J. Fluid Mech., Vol. 530, pp. 327-352 https://doi.org/10.1017/S0022112005003824
  12. Lee, S. .H. and Sung, H. J., 2007, "Direct Numerical Simulation of Turbulent Boundary Layer Over a Rod-roughened Wall," J. Fluid Mech., Vol. 584, pp. 125-146 https://doi.org/10.1017/S0022112007006465
  13. Jimenez, J., 2004, "Turbulent Flows Over Rough Walls," Annu. Rev. Fluid Mech., Vol. 36, pp. 173-196 https://doi.org/10.1146/annurev.fluid.36.050802.122103
  14. Islam, M. S., Haga, K., Kaminaga, M., Hino, R. and Monde, M., 2002, "Experimental Analysis of Turbulent Flow Structure in a Fully Developed Rib-roughened Rectangular Channel with PIV," Exp. Fluids, Vol. 33, pp. 296-306 https://doi.org/10.1007/s00348-002-0432-9
  15. Pokrajac, D., Campbell, L. J., Nikora, V., Manes, C. and McEwan, I., 2007, "Quadrant Analysis of Persistent Spatial Velocity Perturbations Over Square-bar Roughness," Exp. Fluids, Vol. 42, pp. 413-423 https://doi.org/10.1007/s00348-006-0248-0
  16. Volino, R. J., Schultz, M. P. and Flack, K. A., 2007, "Turbulence Structure in Rough- and Smooth-wall Boundary Layers," J. Fluid Mech., Vol. 592, pp. 263-293 https://doi.org/10.1017/S0022112007008518
  17. Wang, L., Hejcik, J. and Sunden, B., 2007, "PIV Measurement of Separated Flow in a Square Channel with Streamwise Periodic Ribs on one Wall," J. Fluid Eng, Vol. 129, pp. 834-841 https://doi.org/10.1115/1.2742723
  18. Djenidi, L., Antonia, R. A., Amielh, M. and Anselmet, F., 2008, "A Turbulent Boundary Layer Over a Two-dimensional Rough Wall," Exp. Fluids, Vol. 44, pp. 37-47 https://doi.org/10.1007/s00348-007-0372-5
  19. Nitche, W., Thunker, R. and Haberland, C., 1983, "A Computational Preston Tube Method," In: Proceedings of the Fourth Symposium on the Turbulent Shear Flows, pp. 261-276
  20. Perry, A. E. and Li, J. D., 1990, "Experimental Support for the Attached-eddy Hypothesis in Zero-pressure Gradient Turbulent Boundary Layers," J. Fluid Mech., Vol. 37, pp. 383-413 https://doi.org/10.1017/S0022112069000619
  21. Scarano, F. and Riethmuller, M. L., 1999, "Iterative Multigrid Approach in PIV Image Processing with Discrete Window Offset," Exp. Fluids, Vol. 26, pp. 513-523 https://doi.org/10.1007/s003480050318
  22. Hart, D. P., 2000, "PIV Error Correction," Exp. Fluids, Vol. 29, pp. 13-22 https://doi.org/10.1007/s003480050421
  23. Westerweel, J., 1994, "Efficient Detection of Spurious Vectors in Particle Image Velocimetry Data," Exp. Fluids, Vol. 16, pp. 236-247 https://doi.org/10.1007/BF00206543
  24. Nikuradse, J., 1933, "Laws of Flow in Rough Pipes," NACA Tech. Memo. 1292
  25. Antonia, R. A. and Luxton, R. E., 1971, "The Response of a Turbulent Boundary Layer to a Step Change in Surface Roughness Part 1. Smooth to Rough," J. Fluid Mech., Vol. 48, pp. 721-761 https://doi.org/10.1017/S0022112071001824
  26. Schultz, M. P. and Flack, K. A., 2005, "Outer Layer Similarity in Fully Rough Turbulent Boundary Layers," Exp. Fluids, Vol. 38, pp. 328-340 https://doi.org/10.1007/s00348-004-0903-2
  27. Zhou, J., Adrian, R. J., Balachandar, S. and Kendall, T. M., 1999, "Mechanism for Generating Coherent Packets of Hairpin Vortices," J. Fluid Mech,. Vol. 387, pp. 353-396 https://doi.org/10.1017/S002211209900467X