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

The Korean Society of Mechanical Engineers (대한기계학회)
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Measurement of Developing Turbulent Flows in a 90-Degree Square Bend with Spanwise Rotation

횡방향으로 회전하는 90도 정사각 단면 곡덕트에서 발달하는 난류유동의 측정

  • 김동철 (고려대학교 대학원 기계공학과) ;
  • 최영돈 (고려대학교 기계공학과) ;
  • 이건휘 (원광대학교 기계공학과)
  • Published : 2003.02.01
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Abstract

Mean flow and turbulence properties of developing turbulent flows in a 90 degree square bend with spanwise rotation were measured by a hot-wire anemometer. A slanted wire is rotated into 6 orientations and the voltage outputs from them are combined to obtain the mean velocity and Reynolds stress components. The combinative effects of the centrifugal and Coriolis forces due to the curvature and the rotation of bend on the mean motion and turbulence structures are investigated experimentally. Results show that the two body forces can either enhance or counteract each other depending on the flow direction in the bend.

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References

  1. Kim, J., 1983, 'The Effect of Rotation on the Turbulent Structure,' Proc. of 4th International Symposium on Turbulent Shear Flows, Karlsruhe, pp. 6-14.
  2. Tafti, D.K. and Vanka, S.P., 1991, 'A Numerical Study of the Effect of Span-wise Rotation on Turbulent Cannel Flow,' Phys. Fluids A, Vol. 3, No. 4, pp. 642-656 https://doi.org/10.1063/1.858215
  3. Koyama, D.K. and Ohuchi, M., 1985, Proc. of 5th International Symposium of Turbulent Shear Flows, Cornell, pp. 21-19
  4. Kristofferson, R., Nilsen, RJ. and Andersson H. I., 1990, 'Validation of Reynolds Stress Closures for Rotating Channel Flows by Means of Direct Numerical Simulations,' Proc. International Symposium on Engineering Turbulence Modeling and Measurements, Dubrovinik, pp. 55-64
  5. Launder, B.E., Tselepidalsis, D.R and Younis, B.A., 1987, 'A Second-Moment Closure Study of Rotating Channel Flow,' J. Fluid Mech., Vol. 183, pp. 63-75 https://doi.org/10.1017/S0022112087002520
  6. Launder, B.E. and Tselepidalsis, D.P., 1994, 'Application of a New Second Moment Closure to Turbulent Channel Flow Rotating in Orthogonal Mode,' International Journal of Heat and Fluid Flow, Vol.15, No.l, pp. 2-10 https://doi.org/10.1016/0142-727X(94)90025-6
  7. Johnston, J. P., Halleen, R. M., and Lezius, D. K., 1972, 'Effects of Spanwise Rotation on the Structure of Two-Dimensional Fully Developed Turbulent Channel Flow,' J. Fluid Mech. Vol.56. No.3, pp. 533-557 https://doi.org/10.1017/S0022112072002502
  8. Kristofferson, R., and Andersson H. I., 1993, 'Direct Numerical Simulations of Low Reynolds Number Turbulent Flow in a Rotating Channel, J. Fluid Mech., Vol. 256, pp. 163-197 https://doi.org/10.1017/S0022112093002757
  9. Anderson, H. I., and Kristoffersen, R., 1995, 'Turbulent Statistics of Rotating Channel Flow, Turbulent Shear Flow, Vol. 9, Springer, Berlin, pp. 53-70
  10. Pattersson, B. A., and Anderson, H. 1., 1997, 'Near-Wall Reynolds-Stress Modeling in Noninertial Frames of Reference,' Fluid Dynamics Res., Vol. 19, pp. 251-276 https://doi.org/10.1016/S0169-5983(96)00039-1
  11. Morris, W. D., 1981, 'Heat Transfer and Fluid Flow in Rotating Coolant Channels,' Chichester: John Wiley and Sons
  12. Kajishima, T., Miyake, Y., and Nishimoto, 1991, 'Large Eddy Simulation of Turbulent Flow in a Square Duct, Trans. JSME(B) 57-540, pp. 2530-2537 https://doi.org/10.1299/kikaib.57.2530
  13. Murata, A., and Mochizuki, S., 1999, 'Effect of Cross-Sectional Aspect Ratio on Turbulent Heat Transfer in an Orthogonally Rotating Rectangular Smooth Duct,' International J. of Heat and Mass Transfer, Vol. 42, pp. 3803-3814 https://doi.org/10.1016/S0017-9310(99)00058-7
  14. Bo, T, Iacovides, H., and Launder, B. E., 1995, 'Developing Buoyancy-Modified Turbulent Flow in Ducts Rotating in Orthogonal Mode,' Trans. ASME, J. of Turbomachinery, Vol. 117, pp. 65-95
  15. Younis, B. A., 1993, 'Prediction of Turbulent Flows in Rotating Rectangular Ducts,' Trans. ASME, J. of Fluids Eng., Vol. 115, pp. 646-652 https://doi.org/10.1115/1.2910193
  16. Lee, G. H., 1992, 'Study on the Characteristics of Turbulent Flow in a Rotating Square Sectioned $90^{\circ}$ Bend' Doctoral thesis, Korea Univ.
  17. Champagne, F. H., Sleicher, C. A., and Wehrmann, O. H., 1967, 'Turbulence Measurements with Inclined Hot-Wire,' J. Fluid Mech., Vol. 28, part 1, pp. 153-175 https://doi.org/10.1017/S002211206700196X
  18. Choi, Y. D., Shin, J. K., Chun, K. H.. and Humphrey, J. A. C, 1997, 'Modeling Turbulent Flow in a Curved Duct of Square Cross-Section,' Proc. of $11^{th}$ Symposium on Turbulent Shear Flows, Grenoble, France, pp. 3.47-3.52
  19. Choi, Y D., Moon, C, and Yang, S. H., S. H., 1990, ' Measurement of Turbulent Flow Characteristics of Square Duct with a 180 Degree Bend by Hot-Wire Anemometer,' Proc. of the International Symposium on Turbulence Modeling and Experiments, Dubrovnik, pp. 429-438
  20. Jackson, T. W, and Lilly, D. G, 1983, 'Single Wire Swirl Flow Turbulence Measurement,' AIAA 83-1202, Cleveland, Ohio
  21. Janjua, S. I., Mclaug, D. K., Jackson, T. W., and Lilly, D. G, 1982, 'Turbulence Measurements in a Confined Jet Using a Six-Orientation Hot-Wire Probe Technique,' AIAA 82-1262, Cleveland, Ohio