Please use this identifier to cite or link to this item: https://doi.org/10.2514/1.33498
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dc.titleStability of vortex pairs over slender conical bodies: Analysis and numerical computation
dc.contributor.authorCai, J.
dc.contributor.authorTsai, H.-M.
dc.contributor.authorLuo, S.
dc.contributor.authorLiu, F.
dc.date.accessioned2014-12-12T07:34:28Z
dc.date.available2014-12-12T07:34:28Z
dc.date.issued2008-03
dc.identifier.citationCai, J., Tsai, H.-M., Luo, S., Liu, F. (2008-03). Stability of vortex pairs over slender conical bodies: Analysis and numerical computation. AIAA Journal 46 (3) : 712-722. ScholarBank@NUS Repository. https://doi.org/10.2514/1.33498
dc.identifier.issn00011452
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/115947
dc.description.abstractAnalytical studies and computational fluid dynamics simulations are presented to study the formation and stability of stationary symmetric and asymmetric vortex pairs over slender conical bodies in an inviscid incompressible flow at high angles of attack. The analytical method is based on an eigenvalue analysis on the motion of the vortices under small perturbations. A three-dimensional time-accurate Euler code is used to compute five typical flows studied by the analytical method on extraordinarily fine grids with strict convergence criteria. Both the theory and the computation show that the vortices over a delta wing are stable and those over a wing-body configuration at the low angle of attack are symmetric and stable, but become asymmetric and bistable at higher angles of attack; that is, the vortices shift to one of two stable mirror-imaged asymmetric configurations. The computational results agree well with the analytical predictions, demonstrating the existence of a global inviscid hydrodynamic instability mechanism responsible for the asymmetry of separation vortices over slender conical bodies.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.2514/1.33498
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentTEMASEK LABORATORIES
dc.description.doi10.2514/1.33498
dc.description.sourcetitleAIAA Journal
dc.description.volume46
dc.description.issue3
dc.description.page712-722
dc.description.codenAIAJA
dc.identifier.isiut000253403200016
Appears in Collections:Staff Publications

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