Numerical investigation on radiation characteristics of aero-intake noise with ground effects
A hybrid method for the prediction of far-field Aero-intake noise from gas turbine engine with ground effects has been developed. The near-field predictions were obtained by solving the linearized Euler equations with computational aeroacoustic techniques composed of high-order finite difference sch...
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| Veröffentlicht in: | The Journal of the Acoustical Society of America 2016-10, Vol.140 (4), p.3141-3141 |
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| container_title | The Journal of the Acoustical Society of America |
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| creator | Choung, HanAhChim |
| description | A hybrid method for the prediction of far-field Aero-intake noise from gas turbine engine with ground effects has been developed. The near-field predictions were obtained by solving the linearized Euler equations with computational aeroacoustic techniques composed of high-order finite difference scheme, non-reflecting boundary condition, overset grids, and parallel computational methods. Kirchhoff integral method was used for the prediction of far-field directivity patterns. In order to predict the noise propagation, ray theory is applied with Geographical Information System (GIS) terrain profile data. Then, the noise level on the ground has been predicted and analyzed, including the effects of air absorption, ground reflection, and diffraction. |
| doi_str_mv | 10.1121/1.4969845 |
| format | Article |
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| source | AIP Journals Complete; Alma/SFX Local Collection; AIP Acoustical Society of America |
| title | Numerical investigation on radiation characteristics of aero-intake noise with ground effects |
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