Acta Mechanica Sinica

, Volume 10, Issue 3, pp 212–219 | Cite as

A numerical study of the vortex motion in oscillating flow around a circular cylinder at low and middlieKc numbers

  • Ling Guoping
  • Ling Guocan


A new hybrid model, which is based on domain decomposition and proposed by the authors, is used for calculating the flow around a circular cylinder at low and middle Keulegan-Carpenter numbers (Kc=2−18) respectively. The vortex motion patterns in asymmetric regime, single pair (or transverse) regime and double pair (or diagonal) regime are successfully simulated. The calculated drag and inertial force coefficients are in better agreement with experimental data than other recent computational results.

Key Words

oscillating flow separated flow vortex motion domain decomposition hybrid method finite difference method vortex method 


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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 1994

Authors and Affiliations

  • Ling Guoping
    • 1
  • Ling Guocan
    • 2
  1. 1.Dept. of MathematicsSuzhou UniversitySuzhouChina
  2. 2.LNM, Institute of MechanicsAcademia SinicaBeijingChina

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