Effect of nonaxisymmetric forcing on a swirling jet with vortex breakdown
Journal Article
·
· Journal of Fluids Engineering
- Univ. of Cincinnati, OH (United States). Dept. of Mechanical, Industrial and Nuclear Engineering
The helical mode instability (which is related to the centrifugal instability) may be a key aspect of the enhanced mixing and entrainment mechanism in strongly swirling jets. The purpose of the present investigation is to excite the helical mode instability of the vortex breakdown flow field. It is expected that this excitation may affect the development of the flow field and enhance the mixing and entrainment. Nonaxisymmetric forcing was applied to the breakdown flow field of a strongly swirling jet. This led to excitation of the helical mode at any desired frequency. Effects of forcing on the flow field were investigated.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 267958
- Journal Information:
- Journal of Fluids Engineering, Vol. 118, Issue 2; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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