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Title: Aeroacoustics of two open cavities in tandem configuration
Authors: Leung, RCK 
Li, XM
Issue Date: 2005
Source: The Twelfth International Congress on Sound and Vibration, Lisbon, Portugal, 11-14 July, 2005, paper no. 873 How to cite?
Abstract: A study of aeroacoustics of flow past two cavities in tandem configuration using one-step aeroacoustics simulation is reported. The flow is assumed laminar and has a Mach number of 0.6. The length to depth ratio L/H of all cavities is set to 2. Cavities with separation of S/H = 1, 2.5 and 5.5 are considered. The numerical results are compared with single-cavity case to highlight the effects of introducing an additional cavity to the aeroacoustics problem. It is found that the separation between the two cavities is an important parameter of the aeroacoustics problem. Resonant flow oscillations occur when two cavities are very close and the associated acoustic field is very intense. When the cavities are far separated, each cavity undergoes its preferred mode of oscillation, each radiating its own scattered sound field.
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