Global stability analysis of compressible flow around swept wings

Christophe Mack (1, 2) , Peter J. Schmid (1) , J. Sesterhenn (2)

1 LadHyX - Laboratoire d'hydrodynamique
2 LRT1 - Department of Numerical Mathematics (München)

The global linear stability of compressible flow in the leading-edge region of a swept wing is studied using an iterative eigenvalue method. This method was implemented via a Jacobian-free framework where direct numerical simulations provide computed flow fields as the required input. It has been found that the investigated leading-edge flow is, over a selected range of flow parameters, most unstable to instabilities of the crossflow type. Our results further confirm that convex leading-edge curvature has a stabilizing influence on this flow. © 2010 Springer-Verlag Berlin Heidelberg.

Domains: Physics [physics]; Mechanics [physics]; Fluid mechanics [physics.class-ph]; Engineering Sciences [physics]; Mechanics [physics.med-ph]; Fluids mechanics [physics.class-ph]

Christophe Mack, Peter J. Schmid, J. Sesterhenn. Global stability analysis of compressible flow around swept wings. Andreas Dillmann, Gerd Heller, Michael Klaas, Hans-Peter Kreplin, Wolfgang Nitsche, Wolfgang Schröder. New Results in Numerical and Experimental Fluid Mechanics VII, 112 (-), Springer, pp.249-256, 2010, Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 978-3-642-14242-0. ⟨10.1007/978-3-642-14243-7_31⟩. ⟨hal-01020666⟩