Skip to Main content Skip to Navigation
Journal articles

Coriolis effect and the attachment of the leading edge vortex

Abstract : The role of the Coriolis effect on the attachment of the leading edge vortex (LEV) is investigated. Toward that end, the Navier–Stokes equations are solved in the non-inertial reference frame of a high angle of attack rotating wing with the Coriolis term being artificially tuned. Reynolds numbers in the range Re [100;750] are considered to identify the interplay between Coriolis and viscous effects. Similarly, artificial tuning of the centrifugal term is achieved to identify the interplay between Coriolis and centrifugal effects. It is shown that (i) the Coriolis effect is the key element in LEV stability for Re > 200, (ii) viscous effects are the key element for Re < 200 and (iii) centrifugal effects have a marginal role. The Coriolis effect is found to promote spanwise flow in the core and behind the LEV, which is known to promote outboard vorticity transport and presumably contributes to stabilizing the aft boundary layer. These mechanisms of LEV stabilization have increased authority as decreases.
Complete list of metadatas

Cited literature [25 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01661763
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Tuesday, December 12, 2017 - 11:17:39 AM
Last modification on : Thursday, February 7, 2019 - 4:58:47 PM

File

Jardin_18593.pdf
Files produced by the author(s)

Identifiers

Citation

Thierry Jardin. Coriolis effect and the attachment of the leading edge vortex. Journal of Fluid Mechanics, Cambridge University Press (CUP), 2017, vol. 820, pp. 312-340. ⟨10.1017/jfm.2017.222⟩. ⟨hal-01661763⟩

Share

Metrics

Record views

61

Files downloads

108