RT Journal Article
T1 On the development of lift and drag in a rotating and translating cylinder
A1 Martín-Alcántara, Antonio
A1 Sanmiguel-Rojas, Enrique
A1 Fernández-Feria, Ramón
K1 Aerodinámica
AB The two-dimensional flow around a rotating cylinder is investigated nu- merically using a vorticity forces formulation with the aim of analyzing quan- titatively the flow structures, and their evolutions, that contribute to the lift and drag forces on the cylinder. The Reynolds number considered, based on the cylinder diameter and steady free stream speed, is Re = 200, while the non-dimensional rotation rate (ratio of the surface speed and free stream speed) selected were α = 1 and 3. For α = 1 the wake behind the cylinder for the fully developed flow is oscillatory due to vortex shedding, and so are the lift and drag forces. For α = 3 the fully developed flow is steady with constant (high) lift and (low) drag. Each of these cases is considered in two different transient problems, one with angular acceleration of the cylinder and constant speed, and the other one with translating acceleration of the cylinder and constant rotation. We characterize quantitatively the contribu- tions of individual fluid elements (vortices) to aerodynamic forces, explaining and quantifying the mechanisms by which the lift is generated in each case. In particular, for high rotation (when α = 3), we explain the relation between the mechanisms of vortex shedding suppression and those by which the lift is enhanced and the drag is almost suppressed when the fully developed flow is reached.
PB Elsevier
YR 2015
FD 2015
LK https://hdl.handle.net/10630/37225
UL https://hdl.handle.net/10630/37225
LA eng
NO Martín-Alcántara, Antonio Sanmiguel-Rojas, Enrique Fernández-Feria, Ramón. On the development of lift and drag in a rotating and translating cylinder. Journal of Fluids and Structures Volume 54, April 2015, Pages 868-885. https://doi.org/10.1016/j.jfluidstructs.2015.02.002
NO This research has been supported by the Ministerio de Economía y Competitividad of Spain Grant no. DPI2013-40479-P, and by the Junta de Andalucía Grant no. P10-TEP-5702.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 4 mar 2026