Leading-edge vortex shedding from rotating wings

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 spanwise 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.

Dmitry Kolomenskiy, Yossef Elimelech, Kai Schneider. Leading-edge vortex shedding from rotating wings. Fluid Dynamics Research, IOP Publishing, 2014, 46 (3), pp.031421. ⟨10.1088/0169-5983/46/3/031421⟩. ⟨hal-01299245⟩

Journal: Fluid Dynamics Research

Date de publication: 01-06-2014

Auteurs:
  • Dmitry Kolomenskiy
  • Yossef Elimelech
  • Kai Schneider

Digital object identifier (doi): http://dx.doi.org/10.1088/0169-5983/46/3/031421

x >