subdomain that is just a portion of its parent

h.mortezaee · August 29, 2015, 09:13

dear cfx users
i want to have subdomain that is not consist a whole domain what should i do ?
obviously i need to model another volume in my geometry , i did that now in cfx-pre when i defined my domain to have all the bodies and then i defined my subdomain that is just a portion of my parent domain , i had an error regarding the isolated fluid , so i changed this solver check in expert parameters to false , it did converged then , but when i saw the results it appears that the domains dont have any physical connection i mean that my subdomain that is energy source does not interact with its parent domain,
so what should i do ?
thank you all in advance

h.mortezaee · August 30, 2015, 06:18

no need to help its solved ,

pkladisios · August 31, 2015, 05:40

Out of plain curiosity, how did you manage a subdomain that's only a portion of it's parent? I wasn't aware that was possible.

ghorrocks · August 31, 2015, 06:05

When you define the domain include 2 or more mesh regions in it. You can then define a subdomain consisting of some or all of the mesh regions. If it is only some of it the subdomain will cover a portion of the parent domain.

pkladisios · August 31, 2015, 06:23

Thank you, Glenn. So, if i understood correctly, this has to be done beforehand, during meshing. Creating various mesh regions allows me to select sub-subdomains ?

ghorrocks · August 31, 2015, 06:58

Yes, the mesh regions are defined in the meshing package.

h.mortezaee · August 31, 2015, 08:56

i create couple more regions in my geometry and then i selected all of them and rmb and "Form new part" , by this i have just one part but i got all of the volumes i need to use in my model in cfx-pre ,its really good way to define sources in the domain

pkladisios · August 31, 2015, 10:19

I thank both of you. Useful tip!

August 29, 2015, 09:13	subdomain that is just a portion of its parent	#1
h.mortezaee Member hani mortezaee Join Date: Sep 2014 Posts: 30 Rep Power: 11	dear cfx users i want to have subdomain that is not consist a whole domain what should i do ? obviously i need to model another volume in my geometry , i did that now in cfx-pre when i defined my domain to have all the bodies and then i defined my subdomain that is just a portion of my parent domain , i had an error regarding the isolated fluid , so i changed this solver check in expert parameters to false , it did converged then , but when i saw the results it appears that the domains dont have any physical connection i mean that my subdomain that is energy source does not interact with its parent domain, so what should i do ? thank you all in advance

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August 30, 2015, 06:18		#2
h.mortezaee Member hani mortezaee Join Date: Sep 2014 Posts: 30 Rep Power: 11	no need to help its solved ,

August 31, 2015, 05:40		#3
pkladisios Member pkladisios Join Date: Jul 2015 Posts: 39 Rep Power: 10	Out of plain curiosity, how did you manage a subdomain that's only a portion of it's parent? I wasn't aware that was possible.

August 31, 2015, 06:05		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	When you define the domain include 2 or more mesh regions in it. You can then define a subdomain consisting of some or all of the mesh regions. If it is only some of it the subdomain will cover a portion of the parent domain.

August 31, 2015, 06:23		#5
pkladisios Member pkladisios Join Date: Jul 2015 Posts: 39 Rep Power: 10	Thank you, Glenn. So, if i understood correctly, this has to be done beforehand, during meshing. Creating various mesh regions allows me to select sub-subdomains ?

August 31, 2015, 06:58		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Yes, the mesh regions are defined in the meshing package.

August 31, 2015, 08:56		#7
h.mortezaee Member hani mortezaee Join Date: Sep 2014 Posts: 30 Rep Power: 11	i create couple more regions in my geometry and then i selected all of them and rmb and "Form new part" , by this i have just one part but i got all of the volumes i need to use in my model in cfx-pre ,its really good way to define sources in the domain

August 31, 2015, 10:19		#8
pkladisios Member pkladisios Join Date: Jul 2015 Posts: 39 Rep Power: 10	I thank both of you. Useful tip!