The leading-edge vortex on a rotating wing changes markedly beyond a certain central body size.

ABSTRACT: Stable attachment of a leading-edge vortex (LEV) plays a key role in generating the high lift on rotating wings with a central body. The central body size can affect the LEV structure broadly in two ways. First, an overall change in the size changes the Reynolds number, which is known to have an influence on the LEV structure. Second, it may affect the Coriolis acceleration acting across the wing, depending on the wing-offset from the axis of rotation. To investigate this, the effects of Reynolds number and the wing-offset are independently studied for a rotating wing. The three-dimensional LEV structure is mapped using a scanning particle image velocimetry technique. The rapid acquisition of images and their correlation are carefully validated. The results presented in this paper show tha

SUBMITTER: Bhat SS 

PROVIDER: S-EPMC6083692 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature