Looking for the impedance of a circular rubber tube

[mechanicaljw]

Hi All,
Any citation or info on how i get the impedance of a circular rubber tube? I am doing CFD of a valve that is connected to this tube. The tube cannot be simulated and so i need to impose the impedance of this tube as a boundary condition at the valve outlet. Any help would be appreciated.

Thanks!

Jimmy

 

[amorrison]

???
"cfd-online.com" might be worth 1% of a try.