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Simulations of a li...
Simulations of a liner cell using a frequency-domain linearized Navier-Stokes methodology
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- Kierkegaard, Axel (författare)
- KTH,Farkost och flyg,Linné Flow Center, FLOW
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- Efraimsson, Gunilla (författare)
- KTH,Farkost och flyg,Linné Flow Center, FLOW
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- Agarwal, A. (författare)
- University of Cambridge, Department of Engineering, United Kingdom
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(creator_code:org_t)
- 2013
- 2013
- Engelska.
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Ingår i: 19th AIAA/CEAS Aeroacoustics Conference. - 9781624102134
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- We present numerical simulations of a liner concept, where a thin layer of metallic foam material is located in between the perforated plate and the backing cavity. This liner concept was first presented in Ref 1, where experimental tests showed that the acoustic characteristics of such a liner are nearly independent of both flow and temperature. We use the linearized Navier-Stokes equations in frequency domain to simulate the acoustic waves and the coupling to the hydrodynamic field in the main duct and the liner neck. The effect of the metallic foam is modeled using the Delany-Bazley model. The numerical results are in good agreement with the experimental results presented in Ref 1. In addition, a parameter study on the influence of the flow resistivity of the metallic foam, mean flow speed and mean flow temperature is performed.
Nyckelord
- Acoustic characteristic
- Delany-Bazley models
- Frequency domains
- Hydrodynamic field
- Linearized Navier-Stokes
- Linearized navier-stokes equations
- Numerical results
- Parameter studies
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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