Computation of vortex lock-in in the laminar wake of a circular cylinder using unsteady monopole sources
- National Cheng Kung Univ., Tainan (Taiwan, Province of China). Institute of Aeronautics and Astronautics
The vortex lock-in in the laminar wake behind a circular cylinder induced by the unsteady monopole source is numerically simulated in this paper. The artificial compressibility method is employed to solve the incompressible Navier-Stokes equations. A high-order accuracy upwind flux-difference finite-volume scheme is used to discretize the flow field. The unsteady monopole source is simulated by a pulsating volume flux through the cylinder surface at a prescribed forcing frequency and amplitude. The forcing amplitude is set to a fixed value while the frequency is varied to search for the lock-in region. The flow field of the periodic lock-in state is examined in detail. Finally, the effects of a higher amplitude and a different source location are briefly investigated.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 100650
- Journal Information:
- Journal of Fluids Engineering, Journal Name: Journal of Fluids Engineering Journal Issue: 2 Vol. 117; ISSN 0098-2202; ISSN JFEGA4
- Country of Publication:
- United States
- Language:
- English
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