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 Oct 22 accepted Why is the turbulent energy cascade described as function of a wavenumber? Feb 11 comment Why is the turbulent energy cascade described as function of a wavenumber? So exactly what non-linear waves are we talking about here? Feb 6 asked Why is the turbulent energy cascade described as function of a wavenumber? Jun 28 comment Darcy law yields extreme speed for gas flow throgh packed spheres? Additionaly, would using Forchheimer instead prinicpaly change the pressure diffreence magnitudes required to generate a given speed? Jun 28 comment Darcy law yields extreme speed for gas flow throgh packed spheres? Because I gave a hard time imagining 10 Pa pressure fluctuations cause a 10 cm/s speed in a packed bed. I am modelling combustion in porous media and it is very sensitive to velocity: $u=0.05$ m/s and $u=0.25$ m/s can yeild quite different results. And accoring to Darcy's law it seems that velocities would fluctate randomly in those value ranges because it is a matter of a few Pa fluctuations in pressure. Jun 28 comment Darcy law yields extreme speed for gas flow throgh packed spheres? In that case, when is Darcy's law ever applicible for gas flow anyway? I mean, if even with a perssure difference of 10 Pa it is already unreasonable.. Jun 27 awarded Editor Jun 27 revised Darcy law yields extreme speed for gas flow throgh packed spheres? added 9 characters in body Jun 27 comment Darcy law yields extreme speed for gas flow throgh packed spheres? Everything in SI. Jun 20 asked Darcy law yields extreme speed for gas flow throgh packed spheres? May 25 awarded Supporter May 25 comment Strict general mathematical definition of drag You're on top of things as usually, Ron, thanks! May 25 accepted Strict general mathematical definition of drag May 11 asked How do I simulate a constant velocity flow in porous media Mar 10 awarded Scholar Mar 10 accepted Boundary condition for water waves generation Mar 10 comment Boundary condition for water waves generation I think it does, it gives a reference too look up the BCs setup, fluent's theory guide is incredibly thorough. Mar 7 answered Boundary condition for water waves generation Mar 6 asked Boundary condition for water waves generation Feb 26 comment Strict general mathematical definition of drag I have all the flow characteristics as a solution in FLUENT. Integration can also be done numericaly. But,say, when I integrate he shear forces should I take only the components parallel to the flow direction at the inlet, or all of the components?