Quadratic resistance Coefficient
Can anyone let me know how to calculate the following:
Quadratic resistance Coefficient & Linear resistance Coefficient for gas flow through porpus media. Thank you in advance. 
Re: Quadratic resistance Coefficient
Quadratic: Kq = dP/dx * 1/u^2 [kg/m^4]
 Michael Bo 
Re: Quadratic resistance Coefficient
Thank You Very Much Mr. Michael Bo

Quadratic resistance Coefficient & Linear resistance Coefficient for free surface flo
Can anyone let me know how to calculate the following:
Quadratic resistance Coefficient & Linear resistance Coefficient for free surface flow. (references) Thank you in advance. 
Those coefficients are for porous material in single phase flow. They are not suitable for multi phase flow.

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