Abstract
The fluctuating field of a jet excited by transient mass injection is simulated numerically. The model is developed by expanding the state vector as a mean state plus a fluctuating state. Non-linear terms are not neglected, and the effect of non-linearity is studied. A high order numerical method is used to compute the solution. The results show a significant spectral broadening in the flow field due to the non-linearity. In addition, large scale structures are broken down into smaller scales.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 167-175 |
| Number of pages | 9 |
| Journal | Journal of Sound and Vibration |
| Volume | 107 |
| Issue number | 1 |
| DOIs | |
| State | Published - May 22 1986 |
Funding
t This work was supported in part for the first author by U.S. Air Force Contract No. AFOSR-76-2881; U.S. Department of Energy Contract No. DE-AC02-76ER03077; and by the National Aeronautics and Space Administration under NASA Contract Nos. NASl-15810 and NASl-1070 while he was in residence at ICASE, NASA Langley Research Center, Hampton, Virginia 23665, U.S.A. $ Research for the third author was further supported in part by NASA under Contract Nos. NASl-16394; NASl-17070; and NASl-17130 while he was in residence at the ICASE, NASA Langley Research Center, Hampton, Virginia 23665, U.S.A.
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Acoustics and Ultrasonics
- Mechanical Engineering