Abstract
Laminar vortex shedding of a square cylinder mounted between two parallel walls are numerically simulated by using a finite volunme method based on a linear upwind differencing scheme and SIMPLER algorithm. The unsteady terms are approximated by a two-step fully-implicit backward scheme. The lock-on phenomena in an oscillating flow as well as the vortex shedding in a steady flow are investigated. The values of Strouhal number in the steady uniform flow are reasonably predicted with accuracy by the present numerical method. The frequency range of the incoming flow for the lock-on appear is well simulated. When the flow is loked-on, the shedding frequency is half of the incoming flow frequency. The structural characteristics of shedding vortex in the lock-on range is discussed in the present paper.
Similar content being viewed by others
Abbreviations
- C d :
-
Drag coefficient
- C t :
-
Lift coefficient
- U :
-
Time averaged velocity at the inlet
- D :
-
Size of square cylinder
- H :
-
Channel height
- f :
-
Frequency of incoming velocity
- f s :
-
Shedding frequency in oscillating incoming flow
- f so :
-
Shedding frequency in steady incoming flow
- A :
-
Amplitude of oscillating incoming flow
- Re :
-
Reynolds number(=UD/v)
- St :
-
Strouhal number(=f s D/U)
References
Arnal, M. P., Goering, D. J. and Humphery, J. A. C., 1991, “Vortex Shedding from a Bluff Body Adjacent to a Plane Sliding Wall,”ASME Journal of Fluids Engineering, Vol. 113, pp. 384–398.
Barbi, C., Favier, D. P., Maresca, C. A. and Telionis, D. P., 1986, “Vortex Shedding and Lock-On of a Circular Cylinder in Oscillatory Flow,”J. Fluid Mech., Vol. 170, pp. 527–544.
Chang, K. S. and Sa, J. Y., 1992, “Patterns of Vortex Shedding from an Oscillating Circular Cylinder,”AIAA Journal, Vol. 30, No. 5, pp. 1331–1336.
Davis, R. W. and Moore, E. F., 1982, “A Numerical Study of Vortex Shedding from Rectangles,”J. Fluid Mech., Vol. 116, pp. 475–506.
Davis, R. W., Moore, E. F. and Purtell, L. P., 1984, “Numerical-Experimental Study of Confined Flow Around Rectangular Cylinders,”Phys. Fluids, Vol. 27, No. 1, pp. 46–59.
Gruffin, O. M. and Hall, M. S., 1991, “Review-Vortex Shedding Lock-On and Flow Control in Bluff Body Wakes,”ASME Journal of Fluids Engineering, Vol. 113, pp. 526–537.
Karki, K. C., 1986, “A Calculation Procedure for Viscous Flows at All Speeds in Complex Geometries,” Ph. D. Thesis, Univ. of Minnesota.
Leo O’Connor, 1991, “Vortex Meters: High-Accuracy Flow Measurement,”Mechanical Engineering, Vol. 113, No. 10, October, pp. 46–49.
Ongoren, A. and Rockwell, D., 1988, “Flow Structure from an Oscillating Cylinder. Part II: Mode Competition in the Near Wake,”J. Fluid Mech., Vol. 191, pp. 225–245.
Okajima, A., 1982, “Strouhal Numbers of Rectangular Cyinders,”J. Fluid Mech., Vol. 123, pp. 379–398.
Patankar, S. V., 1980, “Numerical Heat Transfer and Fluid-Flow,” McGraw-Hill Book Company.
Peric, M., 1985, “A Finite Volume Method for the Prediction of Three-Dimensional Fluid Flow in Complex Ducts,” Ph. D. Thesis, Univ. of London, Imperial College.
Suzuki, H., Inoue, Y., Nishimura, T., Fukutani, K. and Suzuki, K., 1993, “Unsteady Flow in a Channel Obstructed by a Square Rod (crisscross motion of vortex),”Int. J. Heat and Fluid flow, Vol. 14, No. 1, pp. 2–9.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cho, S.H., Kang, SH. Simulation of vortex shedding from a square cylinder in oscillating channel flow. KSME International Journal 11, 195–207 (1997). https://doi.org/10.1007/BF02944893
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02944893