Orbiting Cylinder at Low Reynolds Numbers
Sudden changes found in the time-mean and rms values of force coefficients of a circular cylinder in forced orbital motion placed in a uniform stream when plotted against ellipticity of the orbital path suggest that two solutions (states) exist. For a better understanding of the changes in state, some new factors are considered: the torque coefficient; computations for Reynolds numbers up to 300; the investigation of lock-in domain for Re = 160.
KeywordsOrbiting cylinder Lift Drag Torque Lock-in 2D flow Low Reynolds number flow
The support provided by the Hungarian Research Foundation (OTKA, Project No. T 042961) is gratefully acknowledged.
- 2.Baranyi, L., Sudden jumps in time-mean values of lift coefficient for a circular cylinder in orbital motion in a uniform flow. In: 8th International Conference on Flow-Induced Vibration, Eds. E. de Langre and F. Axisa, Paris, II (2004) 93–98.Google Scholar
- 3.Baranyi, L., Abrupt changes in the root-mean-square values of force coefficients for an orbiting cylinder in uniform stream. In: 4th Symposium on Bluff Body Wakes and Vortex-Induced Vibrations, Eds. T. Leweke and C.H.K. Williamson, Santorini, Greece (2005) 55–58.Google Scholar
- 4.Baranyi, L., Energy transfer between an orbiting cylinder and moving fluid. In: Proceedings of the ASME Pressure Vessels and Piping Conference 9 (2007) 829–838.Google Scholar