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Numerical study of the instabilities of swirling jets

In English

Författare

Summary, in English

The stability of circular swirling jets is studied numerically in order to evaluate the influence of Reynolds number in the laminar regime, swirl level and inlet geometrical perturbations on the appearance and evolution of axial and asymmetric modes. The results reveal increasing deviation from symmetry with increasing Reynolds numbers and swirl levels. The critical value of the Reynolds number corresponding to the appearance of an asymmetric mode is also determined. Geometric perturbations are found to affect the dominant asymmetric instability mode.

Avdelning/ar

Publiceringsår

2005

Språk

Engelska

Sidor

10749-10762

Publikation/Tidskrift/Serie

43rd AIAA Aerospace Sciences Meeting and Exhibit - Meeting Papers

Dokumenttyp

Konferensbidrag

Förlag

American Institute of Aeronautics and Astronautics

Ämne

  • Fluid Mechanics and Acoustics

Nyckelord

  • Asymmetric modes
  • Circular swirling jets

Conference name

43rd AIAA Aerospace Sciences Meeting and Exhibit

Conference date

2005-01-10 - 2005-01-13

Conference place

Reno, NV, United States

Status

Published