problem in solver

shaswat · February 5, 2012, 13:47

please find the attached one
i am facing problem while run the settings
can you please help me

regards

shashwat

ghorrocks · February 5, 2012, 17:20

Seems pretty obvious to me. You need more memory, or run it distributed parallel to share the load over several machines. Otherwise remesh with a smaller mesh.

shaswat · February 5, 2012, 22:27

hi
smaller mesh means?
do you mean number of elements and number of nodes ?
my current elements are 256413
nodes 449588

shaswat · February 6, 2012, 01:28

hi
please find the error

I would like to explain my problem

fluid is flowing in a multilayer porous medium which has different porosity and different permeability.

I have created multiple layer and created domain. i did interface fluid porous, porous porous, porous porous and so on .

the layer has 2micro meter , 10 micrometer, 200 micro meter and so on

Please help me where did i made mistake?

thank you

shashwat

ghorrocks · February 6, 2012, 19:09

Rather than specifying this as different sub domains with different permiabilities it might be better to define the porosity and permeability as a function of location and use a single sub domain with variable porosity and permeability.

shaswat · February 6, 2012, 23:19

hi
I got your idea
can you please give a start or hint how to do it ?

shaswat · February 6, 2012, 23:27

hi
how to specify different porosity and permeability in a different layers of region
Please help to start my project

Thank you

Regards

Govind

shaswat · February 6, 2012, 23:54

hi
do you mean in the designmodeler , I have to create two solids, one fluid region part and other is porous region part.In cfx pre I have to specify different porocity and different permeabilty in a different layers( region) of the porous part . Am I correct?

Regards

Shashwat

shaswat · February 7, 2012, 01:08

Hi

How to split the single zone into multiple layers in cfx pre, for applying different porosity and different permeability

Thanks

Regards

Shashwat

ghorrocks · February 7, 2012, 16:21

Define your porosity and permeability as a CEL function, either an expression or an interpolation function. Have a look at the tutorials for how to do this. The free surface flow over a bump tutorial shows how to do this when they set up the inlet boundary condition.

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February 5, 2012, 17:20		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,697 Rep Power: 143	Seems pretty obvious to me. You need more memory, or run it distributed parallel to share the load over several machines. Otherwise remesh with a smaller mesh.

February 5, 2012, 22:27		#3
shaswat Senior Member Shashwat Join Date: Nov 2011 Posts: 107 Rep Power: 14	hi smaller mesh means? do you mean number of elements and number of nodes ? my current elements are 256413 nodes 449588

February 6, 2012, 19:09		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,697 Rep Power: 143	Rather than specifying this as different sub domains with different permiabilities it might be better to define the porosity and permeability as a function of location and use a single sub domain with variable porosity and permeability.

February 6, 2012, 23:19		#6
shaswat Senior Member Shashwat Join Date: Nov 2011 Posts: 107 Rep Power: 14	hi I got your idea can you please give a start or hint how to do it ?

February 6, 2012, 23:27		#7
shaswat Senior Member Shashwat Join Date: Nov 2011 Posts: 107 Rep Power: 14	hi how to specify different porosity and permeability in a different layers of region Please help to start my project Thank you Regards Govind

February 6, 2012, 23:54		#8
shaswat Senior Member Shashwat Join Date: Nov 2011 Posts: 107 Rep Power: 14	hi do you mean in the designmodeler , I have to create two solids, one fluid region part and other is porous region part.In cfx pre I have to specify different porocity and different permeabilty in a different layers( region) of the porous part . Am I correct? Regards Shashwat

February 7, 2012, 01:08		#9
shaswat Senior Member Shashwat Join Date: Nov 2011 Posts: 107 Rep Power: 14	Hi How to split the single zone into multiple layers in cfx pre, for applying different porosity and different permeability Thanks Regards Shashwat

February 7, 2012, 16:21		#10
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,697 Rep Power: 143	Define your porosity and permeability as a CEL function, either an expression or an interpolation function. Have a look at the tutorials for how to do this. The free surface flow over a bump tutorial shows how to do this when they set up the inlet boundary condition.