An Experimental Study on Swirling Flow behind a Round Cylinder in the Horizontal Circular Tube

  • Chang Tae-Hyun (Division of Mechanical and Automation Engineering, Kyungnam University) ;
  • Lee Hae Soo (Department of Mechanical Engineering, Kyungnam University, Graduate School)
  • Published : 2005.12.01

Abstract

An experimental study is performed for turbulent swirling flow behind a circular cylinder using 2-D PIV technique. The Reynolds number investigated are 10,000, 15,000, 20,000 and 25,000. The mean velocity vector, time mean axial velocity, turbulence intensity, kinetic energy and Reynolds shear stress behind the cylinder are measured before and behind the round cylinder along the test tube. A comparison is included with non swirl flow behind a circular and square cylinder. The recirculation zones are showed asymmetric profiles.

Keywords

References

  1. Boo Jung-sook, 1985, '2 Dimensional Turbulent Structure Behind A Round Cylinder,' Ph. D Paper, Kyungbuk University
  2. Cantwell, B. J., 1975, 'A Flying Hot Wire Study of the Turbulent Near Wall of Circular Cylinder at a Reynolds Number of 140,000,' California Institute of Technology
  3. Chew, Y. T., 2001, 'Numerical Flow Visualization of Flow Over a Square Cylinder at Incidence,' Proceeding of the 6th Asian Symposium on Visualization, pp. 70-72
  4. Cho, J. H., 1990, 'A Study on Tubulent Flow Charateristics in the Wake of the Square Cylinder,' Chungnam University, Master paper
  5. Choi, J. H. and Lee, S. J., 1999, 'Effect of External Acoustic Excitation on Wake behind a Circular Cylinder,' KSME B, Vol. 23-5, pp. 603-609
  6. Coles, D., 1983, 'Prospects of Useful Research on Coherent Structure in Turbulent Shear Flow,' Proc. Indian Acad. Sci., (Engineering Sci.) 4 : pp. 111-127
  7. Contanceau, M. and Bouard, R., 1959, 'Experimental Determination of the Main feature of the Viscous Flow in the Wake of a Circular Cylinder in Uniform Translation,' Fluid Mechanics, Vol. 79, No. 2, pp. 231-259 https://doi.org/10.1017/S0022112077000135
  8. Daichin and Sang Joan Lee, 2001, 'Flow Field Analysis of Wake behind an Elliptic Cylinder Close to a Free Surface,' Proceeding of the 6th Asian Symposium on Visualization, pp. 216-218
  9. Doh, D. H., 2001, 'Probind 3-D Structures of the Wake Near a Circular Cylinder,' Proceeding of the 6th Asian Symposium on Visualization, pp. 335-340
  10. Jang, D. S., Lee, Y. W., Doh, D. H., Kang, C. S. and Kobayashi, T., 2001, 'Large Eddy of Flow around a Bluff Body of Vehicle shape,' Proceeding of the 6th Asian Symposiumon Visualization, pp. 335-340
  11. Kim, K. C. and Jung, Y. B., 1995, 'A Study on the Characteristics of Cylinder Wake Placed in Thermally Stratified Flow (IV) - On the Cylinder Wake with Various Heating Rates,' KSME, Vol. 19-5, pp. 1340-1350
  12. Kiya, M. and Matsumura, M., 1985, 'Turbulent Structure in Intermediate Wake of a ircular Cylinder,' JSME, pp. 451-463
  13. Lee Hyun, 2001, 'A Study on Fluid Characteristics in the Wake of Bluff Bodies by Multivision PIV,' Korea Marine University Msc Theses
  14. Lee, M. B. and Kim, K. C. 2001, 'A Study on the Near Wake of a Square Cylinder Using Particle Image Velocimetry (I),' KSME B, Vol. 25, pp. 1408-1416
  15. Mizota, T. and Okajima, A., 1981, 'A Experimental Studies of Mean Flow around Rectangular Prisms,' Japan, Soc. Civ. Engrs 312, pp. 39-47
  16. Okajima, A., 1982, 'Strouhal Numbers of Rectangular Cylinders,' Kyushu Univ., pp. 379-398
  17. Owen, F. K. and Johnson, D. A., 1980, 'Measurements of Unsteady Vortex Flow Fields,' AIAA, Vol. 18, pp. 1173-1179 https://doi.org/10.2514/3.50868
  18. Roshko, A., 1961, 'Experimentals on the Flow Past a Circular Cylinder at Very High Reynolds Number,' J. of Fluid Mech., 10, pp. 345-356 https://doi.org/10.1017/S0022112061000950
  19. Tae-Hyun Chang and Jong-Boong Lee, 2004, 'An Experimental Study on the Wake of a Square Cylinder Using Particle Image Velocimetry,' Journal of the Korean Society of Marine Engineers, Vol. 24, No. 1, pp. 124-135
  20. Yoon, S. H., Sim, J. K., Woo, C. S. and Lee, D. H., 1999, 'Influence of the Wake Behind Rectangular Bars on the Flow and Heat Transfer in the Linear Turbine Cascade,' KSME B, Vol. 23-7, pp. 864-870