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- W146009667 abstract "The M219 cavity benchmark problem is used to compare the performance and the applicability of two commercial software, namely Ansys Fluent and Exa Powerflow. The computational domain is small and is concentrated around the cavity to limit the computation time and thus permit to assess the possibility of carrying out such simulations in an industrial context. Despite the small length of the domain, far-field conditions are imposed at the open boundaries which induces some unphysical pressure wave reflections. On the reference cavity case (Ma=0.85, P=62900), the second and third tones are well captured but the background noise and sound pressure level are higher than previously mentioned in the literature. Wave reflection and boundary layer features are thought to be the main causes of these discrepancies. A case at Mach number equal to 0.30 was carried out; Fluent and Powerflow present similar results in terms of acoustics characteristics. The mean flow computation shows slight differences which are certainly due to different boundary layers attacking the cavity leading edge.KeywordsMach NumberSound Pressure LevelStreamwise VelocityLattice Boltzmann MethodPower Spectrum DensityThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves." @default.
- W146009667 created "2016-06-24" @default.
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- W146009667 date "2012-01-01" @default.
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- W146009667 title "Comparison between Lattice Boltzmann Simulation and Detached-Eddy Simulation on the Cavity Problem" @default.
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- W146009667 doi "https://doi.org/10.1007/978-3-642-31818-4_23" @default.
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