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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX September 18, 2011, 18:26

Replies: 13 Help in porosity for knitted fabric??? Linear or Quadratic resistance coeff Views: 3,151 Posted By ghorrocks Again, I do not have time to read your link. ... Again, I do not have time to read your link. But it appears that they are simple grossing up the individual cylinder drag to the local porosity. This sounds like a very approximate (ie not very...

Forum: CFX September 18, 2011, 07:42

Replies: 13 Help in porosity for knitted fabric??? Linear or Quadratic resistance coeff Views: 3,151 Posted By ghorrocks I have no idea about that. It does not seem to be... I have no idea about that. It does not seem to be applicable to the CFX approach as CFX does not use a loss coefficient of that form.

Forum: CFX September 17, 2011, 07:15

Replies: 13 Help in porosity for knitted fabric??? Linear or Quadratic resistance coeff Views: 3,151 Posted By ghorrocks This approach looks good. I don't have time to... This approach looks good. I don't have time to read it in detail but it looks promising. If you have the drag force of the membrane then you can divide it by the membrane area to get the...

Forum: CFX September 16, 2011, 06:36

Replies: 13 Help in porosity for knitted fabric??? Linear or Quadratic resistance coeff Views: 3,151 Posted By ghorrocks Yes, that is correct. The drag coefficient is... Yes, that is correct. The drag coefficient is actually a function of Re, but if you are lucky enough to be in the constant drag coefficient regime then a constant is fine. Convert the drag...

Forum: CFX September 15, 2011, 18:57

Replies: 13 Help in porosity for knitted fabric??? Linear or Quadratic resistance coeff Views: 3,151 Posted By ghorrocks You can estimate the resistance of a single... You can estimate the resistance of a single isolated cylinder quite accurately, the drag of a cylinder is well known. If you search the literature you can probably find the drag/resistance of a bank...

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