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Träfflista för sökning "WFRF:(Cinar Gökhan) srt2:(2010)"

Sökning: WFRF:(Cinar Gökhan) > (2010)

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1.
  • Yanaz Cinar, Özge, et al. (författare)
  • Jet pipe reflections – influence of geometrical and flow exit conditions
  • 2010
  • Ingår i: 16th AIAA/CEAS Aeroacoustics Conference, Stockholm, Sweden, June 7-9 2010. - : AIAA.
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • In this paper, we study the influence of the exit conditions on the acoustic reactions at a jet pipe opening. For the flow exit conditions, the model of Munt assuming a vortex sheet at the exit of a semi-infinite jet pipe is improved by considering more general coupling conditions. We focus on modelling the acoustic properties at the shear layer in general and the stability properties in particular. Experimental methods are used for studying primarily the geometric exit conditions. Both theoretical and experimental results are presented and discussed. Numerical results related to the theory show that the improved modelling causes an expected increase in the magnitude of the reflection coefficient compared to the original Munt's model. The experimental results, on the other hand, show that there are additional effects due to the presence of thick walls at the exit of the straight pipes used in the experiments. These effects are observed to be more dominant than the effects due to the shapes of the edges. Based on the discussions, further theoretical and experimental investigations are proposed.
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