Effect of grazing flow on the acousdcal behaviour of a porous ...

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Results without <strong>flow</strong> Real(k x )Propaga4on Experimental determina4on <strong>of</strong> an equivalent wave number k xImag(k x )Ajenua4on Phase velocity Acoustics 2012, Nantes, 26 april 2012 <strong>Effect</strong> <strong>of</strong> <strong>flow</strong> on a porous material in a duct, Y. Renou and Y. Aurégan 16
Calcula4ons without <strong>flow</strong> Imag(k x /k 0 )f Real(k x /k 0 )f = 2000 HzAcoustics 2012, Nantes, 26 april 2012 <strong>Effect</strong> <strong>of</strong> <strong>flow</strong> on a porous material in a duct, Y. Renou and Y. Aurégan 17
Page 5 and 6: Experimental setup 50 mm 200 mm
Page 11 and 12: Numerical method: finite differe
Page 13 and 14: Finite difference method vs Exp
Page 15: Results without flow</str
Page 19 and 20: With flow M=0.2 R
Page 21 and 22: With flow M=0.2 E
Page 23 and 24: With flow M=0.2 H
Page 25: Conclusions and perspec4ves on

Effect of grazing flow on the acousdcal behaviour of a porous ...

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