Abstract
Numerical simulations are presented for the unsteady flow and noise radiation of high speed circular jets. The predictions are based on solutions of the nonlinear disturbance equations. Only the large-scale fluctuations are resolved. The effects of the small scales are parameterized using a subgrid-scale model. The radiated noise is predicted using both a direct simulation and a Ffowcs Williams-Hawkings method. Comparisons are made with experimental measurements. Previously reported overpredictions are considerably reduced. The improvements due to changes in the prescription of inflow conditions and the addition of a dynamic subgrid-scale model are discussed. Preliminary results are presented for a subsonic heated operating condition.
| Original language | English (US) |
|---|---|
| State | Published - Dec 1 2000 |
| Event | 6th Aeroacoustics Conference and Exhibit, 2000 - Lahaina, HI, United States Duration: Jun 12 2000 → Jun 14 2000 |
Other
| Other | 6th Aeroacoustics Conference and Exhibit, 2000 |
|---|---|
| Country | United States |
| City | Lahaina, HI |
| Period | 6/12/00 → 6/14/00 |
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All Science Journal Classification (ASJC) codes
- Aerospace Engineering
- Electrical and Electronic Engineering
- Mechanical Engineering
- Acoustics and Ultrasonics
Cite this
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Jet noise simulations for circular nozzles. / Morris, Philip John; Scheidegger, Thomas E.; Long, Lyle Norman.
2000. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.Research output: Contribution to conference › Paper
TY - CONF
T1 - Jet noise simulations for circular nozzles
AU - Morris, Philip John
AU - Scheidegger, Thomas E.
AU - Long, Lyle Norman
PY - 2000/12/1
Y1 - 2000/12/1
N2 - Numerical simulations are presented for the unsteady flow and noise radiation of high speed circular jets. The predictions are based on solutions of the nonlinear disturbance equations. Only the large-scale fluctuations are resolved. The effects of the small scales are parameterized using a subgrid-scale model. The radiated noise is predicted using both a direct simulation and a Ffowcs Williams-Hawkings method. Comparisons are made with experimental measurements. Previously reported overpredictions are considerably reduced. The improvements due to changes in the prescription of inflow conditions and the addition of a dynamic subgrid-scale model are discussed. Preliminary results are presented for a subsonic heated operating condition.
AB - Numerical simulations are presented for the unsteady flow and noise radiation of high speed circular jets. The predictions are based on solutions of the nonlinear disturbance equations. Only the large-scale fluctuations are resolved. The effects of the small scales are parameterized using a subgrid-scale model. The radiated noise is predicted using both a direct simulation and a Ffowcs Williams-Hawkings method. Comparisons are made with experimental measurements. Previously reported overpredictions are considerably reduced. The improvements due to changes in the prescription of inflow conditions and the addition of a dynamic subgrid-scale model are discussed. Preliminary results are presented for a subsonic heated operating condition.
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M3 - Paper
AN - SCOPUS:84894622264
ER -