Vortex-induced vibrations of a circular cylinder at low Reynolds numbers Export

@article{citeulike:4796749, abstract = {Results are presented for a numerical simulation of vortex-induced vibrations of a circular cylinder of low non-dimensional mass (m* = 10) in the laminar flow regime (60 \< Re \< 200). The natural structural frequency of the oscillator, fN, matches the vortex shedding frequency for a stationary cylinder at Re = 100. This corresponds to fN D2/ the coefficient of viscosity of the fluid. A stabilized spaceinitiallower at, approximately, the middle of the synchronization region. This jump is not hysteretic and it is not associated with any radical change in the vortex shedding pattern. Instead, it is caused by changes in the location and value of the maximum suction on the lower and upper surface of the cylinder. This is observed clearly by comparing the time-averaged flow for a vibrating cylinder for different Re. While the mean flow for Re beyond the phase jump is similar to that for a stationary cylinder, it is associated with a pair of counter-rotating vortices in the near wake for Re prior to the phase jump. The phase jump appears to be one of the mechanisms of the oscillator to self-limit its vibration amplitude.}, author = {Prasanth, T. K. and Mittal, S.}, citeulike-article-id = {4796749}, citeulike-linkout-0 = {http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=1579908}, citeulike-linkout-1 = {http://dx.doi.org/10.1017/S0022112007009202}, doi = {10.1017/S0022112007009202}, journal = {Journal of Fluid Mechanics}, keywords = {viv}, number = {-1}, pages = {463--491}, posted-at = {2009-06-10 13:00:45}, priority = {2}, title = {Vortex-induced vibrations of a circular cylinder at low Reynolds numbers}, url = {http://dx.doi.org/10.1017/S0022112007009202}, volume = {594}, year = {2008} }

TY - JOUR ID - citeulike:4796749 L3 - citeulike-article-id:4796749 N2 - Results are presented for a numerical simulation of vortex-induced vibrations of a circular cylinder of low non-dimensional mass (m* = 10) in the laminar flow regime (60 < Re < 200). The natural structural frequency of the oscillator, fN, matches the vortex shedding frequency for a stationary cylinder at Re = 100. This corresponds to fN D2/ the coefficient of viscosity of the fluid. A stabilized spaceinitiallower at, approximately, the middle of the synchronization region. This jump is not hysteretic and it is not associated with any radical change in the vortex shedding pattern. Instead, it is caused by changes in the location and value of the maximum suction on the lower and upper surface of the cylinder. This is observed clearly by comparing the time-averaged flow for a vibrating cylinder for different Re. While the mean flow for Re beyond the phase jump is similar to that for a stationary cylinder, it is associated with a pair of counter-rotating vortices in the near wake for Re prior to the phase jump. The phase jump appears to be one of the mechanisms of the oscillator to self-limit its vibration amplitude. IS - -1 JF - Journal of Fluid Mechanics EP - 491 TI - Vortex-induced vibrations of a circular cylinder at low Reynolds numbers VL - 594 SP - 463 KW - viv AU - Prasanth, TK AU - Mittal, S PY - 2008/// UR - http://dx.doi.org/10.1017/S0022112007009202 ER -