Control of flow structure on delta wing with steady trailing-edge blowing

Yavuz M. M., Rockwell D.

AIAA JOURNAL, vol.44, no.3, pp.493-501, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 3
  • Publication Date: 2006
  • Doi Number: 10.2514/1.16444
  • Journal Name: AIAA JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.493-501
  • Middle East Technical University Affiliated: No


The near-surface flow structure and topology are characterized of a delta wing of low sweep angle, which is subjected to trailing-edge blowing. A technique or high-image-density particle image velocimetry is employed to determine the topological critical points adjacent to the surface and in the near wake of the wing, in relation to the dimensionless magnitude of the blowing coefficient. These topological features are, in turn, interpreted in conjunction with patterns of surface-normal vorticity and near-surface velocity fluctuations, which provide an indication of buffet loading. Even though the Jet blowing is at the trailing edge, it has a remarkable, global influence on the surface patterns located well upstream; at high angle of attack, it leads to eradication of large-scale, three-dimensional separation in the vicinity of the apex.