Please use this identifier to cite or link to this item: https://doi.org/10.2514/1.33498
Title: Stability of vortex pairs over slender conical bodies: Analysis and numerical computation
Authors: Cai, J. 
Tsai, H.-M. 
Luo, S.
Liu, F.
Issue Date: Mar-2008
Citation: Cai, 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
Abstract: Analytical 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.
Source Title: AIAA Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/115947
ISSN: 00011452
DOI: 10.2514/1.33498
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

17
checked on Sep 17, 2018

WEB OF SCIENCETM
Citations

7
checked on Sep 17, 2018

Page view(s)

34
checked on Jun 8, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.