Abstract
This paper aims to report a numerical investigation of the aeroacoustics of merging flows at a duct junction and this is done by directly solving Navier-Stokes equations with the conservation element and solution element scheme. This method has already been demonstrated as a successful tool in investigating various aeroacoustics problems. The first part of this paper presents a study of wave propagation at 90° junction, which illustrates the capability of CE/SE method in capturing the acoustics accurately. The second part shows the investigation of merging angle effect at the duct junction on the noise generation. Duct junction with merging angles of 30°, 60° and 90° were studied. It is found that the noise is originated at the wake region of the duct junction while the shear layer created between the two merging flows at the upstream corner of the junction is not important in this process.
| Original language | English |
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| Title of host publication | ICTCA 2011 - 10th International Conference on Theoretical and Computational Acoustics, Proceeding |
| Pages | 274-283 |
| Number of pages | 10 |
| Publication status | Published - 1 Dec 2012 |
| Event | 10th International Conference on Theoretical and Computational Acoustics, ICTCA 2011 - Taipei, Taiwan Duration: 24 Apr 2011 → 28 Apr 2011 |
Conference
| Conference | 10th International Conference on Theoretical and Computational Acoustics, ICTCA 2011 |
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| Country/Territory | Taiwan |
| City | Taipei |
| Period | 24/04/11 → 28/04/11 |
ASJC Scopus subject areas
- Computational Theory and Mathematics
- Acoustics and Ultrasonics