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July 20, 2009, 14:54 |
30" diam jet on 9 foot perfplate
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Some ignorant fool agreed to have me model a system that consists of a 30" pipe expanding at 90 deg full cone angle to a 9 foot perforated plate that has 2-1/2" holes and 48% open area.
Now I've read all the docs on pressure jump and porus media, but I don't have any flow/pressure drop data on the perforated plate. So I just modeled the actual plate (its 2" thick). Well, I tried to model it, but it looks way wrong, and although it 'converges' the flow patten keeps changing. (Even with 2nd order control) Model is just a flow / turbulence model, constant density/viscosity. Anyone have a clue to what kind of cell size resolution I'm going to need here? |
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