Abstract
Understanding the behaviour of one-dimensional acoustical wave propagation in ducts is very important for controlling combustion instabilities in propulsion, household burners, gas turbine combustors, and designing engineering mufflers. This paper is concerned with ducts in which temperature gradient exist. Computational Fluid Dynamics (CFD) simulation of the acoustic wave propagations through a duct with Helmholtz resonators in the presence of a mean temperature gradient without mean air flow has been investigated. Acoustic pressure and axial velocity amplitudes have been calculated as a function of time. Time and axial distance dependent acoustic pressure and velocity are visualised as 3D surface plots.
| Original language | English |
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| Pages | 415-423 |
| Number of pages | 9 |
| Publication status | Published - 15 Oct 2014 |
| Event | Institute of Acoustics 40th Anniversary Conference - Duration: 15 Oct 2014 → … |
Conference
| Conference | Institute of Acoustics 40th Anniversary Conference |
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| Period | 15/10/14 → … |
Keywords
- Helmholtz resonator, duct, acoustic waves, temperature gradient