A numerical study of the vortex motion in oscillating flow around a circular cylinder at low and middle \(Kc\) numbers. (English) Zbl 0818.76053
Summary: A new hybrid model based on domain decomposition is used for calculating the flow around a circular cylinder at low and middle Keulegan-Carpenter numbers \((Kc = 2 \sim 18) \). The vortex motion patterns in asymmetric regime, single pair (or transverse) regime, and double pair (or diagonal) regime are simulated. The calculated drag and inertial force coefficients are in better agreement with experimental data than other recent computational results.
MSC:
| 76M20 | Finite difference methods applied to problems in fluid mechanics |
| 76D05 | Navier-Stokes equations for incompressible viscous fluids |
| 65M55 | Multigrid methods; domain decomposition for initial value and initial-boundary value problems involving PDEs |
Keywords:
ADI method; FACR method; separated flow; vortex method; single pair regime; double pair regime; asymmetric regime; drag and inertial force coefficientsReferences:
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