Leading-edge vortex shedding from rotating wings

Dmitry Kolomenskiy, Yossef Elimelech, Kai Schneider
2014 Fluid Dynamics Research  
The paper presents a numerical investigation of the leading-edge vortices generated by rotating triangular wings at Reynolds number Re=250. A series of three-dimensional numerical simulations have been carried out using a Fourier pseudo-spectral method with volume penalization. The transition from stable attachment of the leading-edge vortex to periodic vortex shedding is explored, as a function of the wing aspect ratio and the angle of attack. It is found that, in a stable configuration, the
more » ... anwise flow in the recirculation bubble past the wing is due to the centrifugal force, incompressibility and viscous stresses. For the flow outside of the bubble, an inviscid model of spanwise flow is presented.
doi:10.1088/0169-5983/46/3/031421 fatcat:6wbuzd6ogfhqrp2ax7kugu7jny