Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지

BLOCKAGE EFFECT ON FLOWS AROUND A ROTATIONALLY OSCILLATING CIRCULAR CYLINDER

회전 진동하는 원형실린더 주위 유동의 폐쇄효과 연구

  • 강승희 (전북대학교 항공우주공학과, 전북대학교 부설 공학연구원 공업기술연구센터) ;
  • 권오준 (한국과학기술원 항공우주공학과)
  • Published : 2008.12.31
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Abstract

For study on the unsteady blockage effect, flows around a rotationally oscillating circular cylinder with relatively low forcing frequency in closed test-section wind tunnels have been numerically investigated by solving compressible Navier-Stokes equations. The numerical scheme is based on a node-based finite-volume method with the Roe's flux-difference splitting and an implicit time-integration method coupled with dual time-step sub-iteration. The computed results of the oscillating cylinder in the test section showed that the fluctuations of lift and drag are augmented by the blockage effects. The drag further increases because of low base pressure. The pressure on the test section wall shows the harmonics having the oscillating and the shedding frequencies contained in the blockage effect.

Keywords

References

  1. 2008, Lee, S.-J. and Lee, J.-Y., "PIV Measurement of the Wake Behind a Rotationally Oscillating Circular Cylinder," Journal of Fluids and Structures, Vol.24, pp.2-17 https://doi.org/10.1016/j.jfluidstructs.2007.06.001
  2. 2003, Norberg, C., "Fluctuating Loft on a Circular Cylinder: Review and new Measurements," Journal of Fluids and Structures, Vol.17, pp.57-96 https://doi.org/10.1016/S0889-9746(02)00099-3
  3. 2006, Paisoussis, "Real-Life Experiences with Flow-Induced Vibration," Journal of Fluids and Structures, Vol.22, pp.741-755 https://doi.org/10.1016/j.jfluidstructs.2006.04.002
  4. 2008, Matsumoto, M. et al., "Mechanism of and How to Suppress Wind-Induced Vibration of Inclined Cables of Cable-Stayed Bridges," The Proceedings of 4th International Conference on Advances in Wind and Structures, pp.75-86
  5. 1990, Blevins, R.D., Flow-Induced Vibration, 2nd Ed., Krieger Publishing Company
  6. 1998, Ewald, B.F.R.(Editor), "Wind Tunnel Wall Correction," AGARDograph 336
  7. 1983, Mokry, M., Chan, Y.Y. and Jones, D.J., "Two-Dimensional Wind Tunnel Wall Interference," AGARD-AG-281
  8. 1998, Kong, L., Hameury, M. and Parkinson, G.V., "Unsteady-Flow Testing in a Low-Correction Wind Tunnel," Journal of Fluids and Structures, Vol.12, pp.33-45 https://doi.org/10.1006/jfls.1997.0126
  9. 1982, McCroskey, W.J., McAlister, K.W., Carr, L.W. and Pucci, S.L., "An Experimental Study of Dynamic Stall on Advanced Airfoil Sections Volume 1. Summary of the Experiment," NASA-TM-84245
  10. 1978, McAlister, K.W., Carr, L.W. and McCroskey, W.J., "Dynamic Stall Experiments on the NACA 0012 Airfoil," NASA-TP-1100
  11. 1999, 박영민, 백경욱, 권오준, "비정련 동적격자를 이용한 상대운동이 있는 물체 주위의 2차원 비정상 유동해석," 한국항공우주학회지, 제27권, 제7호, pp.1-10
  12. 1997, Roe, P.L., "Approximate Riemann Solvers, Parameter Vectors, and Difference Scheme," Journal of Computational Physics, Vol.43, pp.357-372
  13. 1997, Ollivier-Gooch, C.F., "High-Order ENO Schemes for Unstructured Meshes Based on Least Square Reconstruction," AIAA Paper 97-0540
  14. 1997, Haselbacher, A.C., McGuirkkk, J.J. and Page, G.J., "Finite-Volume Discretization Aspect for Viscous Flows on Mixed Unstructured Grids," AIAA, Paper 97-1946
  15. 2000, 오우섭, 김주성, 권오준, "비정렬격자를 이용한 피칭 날개단면 주위의 비정상 점성유동 해석," 한국항공우주학회, 제28권, 제4호 pp.17-26
  16. 1979, Schlichting, H., Boundary-Layer Theory, 7th Ed., McGraw-Hill, New-York, pp.24-46