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hamednadi May 3, 2013 05:03

CFX import velocity
i am modeling a domain with 2 phases (air-water)
for defining model, i selected continues fluid for air and water.i export water.superficial velocity(x,y,z) to a new file and import it to a new domain with sediment and put it on the sediment but sediment volume fraction dosn't have any change. can you help me?

ghorrocks May 3, 2013 07:00

Do you mean your sediment volume fraction initial condition is ignored? Can you post the CCL?

hamednadi May 4, 2013 00:09

my sediment topography dosnt have any change
it behave such a rigid bed without any change (without any erosion)
i import the velocity bc-profile from water-Air modeling but i increase y-axis height of profile to putting it on the sediment.
can i send .def file to your e-mail?

hamednadi May 4, 2013 00:24

1 Attachment(s)
it is ccl file of modeling

ghorrocks May 5, 2013 08:10

I am not sure, but I suspect CFX needs the velocity variable to initialise the velocity in the porous region, not the superficial velocity variable. I think the superficial velocity variable is calculated from the velocity variable, not the other way around.

hamednadi May 5, 2013 09:56

do you have proposal to modeling this problem.
my model have 3 phases (air water sediment). sediment phase is assumed as dispersed solid and water is flowing on it. sediment topography changes is required.

ghorrocks May 5, 2013 18:48

CFX can model many applications of this, but some it cannot. For instance CFX does not have a sedimentation/scouring model.

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