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

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With <strong>flow</strong> M=0.2 Imag(k x /k 0 )Con4nuity <strong>of</strong> displacement β v =0Real(k x /k 0 )Imag(k x /k 0 )Con4nuity <strong>of</strong> velocity β v =1Real(k x /k 0 )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 18
With <strong>flow</strong> M=0.2 Real(k x )(1/m)Experiments with <strong>flow</strong> Acous4cal wave against the <strong>flow</strong> β v =1 Without <strong>flow</strong> Myers: β v =0 Experiments with <strong>flow</strong> Acous4cal wave in <strong>flow</strong> direc4on Real(k x )(1/m)β v =1 Without <strong>flow</strong> Myers: β v =0 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 19
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 and 16: Results without flow</str
Page 17: Calcula4ons without flow<
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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