sources

October 7, 2002, 06:03

Hello CFX users! Could anyone please give me some examples or explanation about source specifications in multiphase flow? There are no source specifications in Tutorial 15 and 16 in CFX 5.5.1. However, according to the governing equations sources are very common. I am really puzzled. Looking forward to your comments. Thanks.

Best regards David

October 7, 2002, 10:20

If you transform one phase into another (mass source and sink will exist) for example... That is quite straighforward to implement in CFX-5 using cel and ub-domains.

October 8, 2002, 00:28

Thanks. What does "ub-domains" and "cel" mean ? Does it mean "sub-domains"?

Regards David

October 8, 2002, 00:30

Sorry, another question. How to generate mesh for a very long pipe with narrow diameter, for example, with 2 metres length and a 0.02 metres width?

October 8, 2002, 00:49

A Hex mesh would be best for this pipe. You can switch the meshing mode to Patran Meshing from the Preferences menu in CFX-Build to allow Hex meshing. Your support rep should be able to tell you more about using this feature. Mike

October 8, 2002, 02:16

Thanks Mike. First I want to try Patran method.

October 7, 2002, 06:03	sources	#1
David George Guest Posts: n/a	Hello CFX users! Could anyone please give me some examples or explanation about source specifications in multiphase flow? There are no source specifications in Tutorial 15 and 16 in CFX 5.5.1. However, according to the governing equations sources are very common. I am really puzzled. Looking forward to your comments. Thanks. Best regards David

October 7, 2002, 10:20	Re: sources	#2
Holidays Guest Posts: n/a	If you transform one phase into another (mass source and sink will exist) for example... That is quite straighforward to implement in CFX-5 using cel and ub-domains.

October 8, 2002, 00:28	Re: sources	#3
David George Guest Posts: n/a	Thanks. What does "ub-domains" and "cel" mean ? Does it mean "sub-domains"? Regards David

October 8, 2002, 00:30	Re: sources	#4
David George Guest Posts: n/a	Sorry, another question. How to generate mesh for a very long pipe with narrow diameter, for example, with 2 metres length and a 0.02 metres width?

October 8, 2002, 00:49	Re: sources	#5
Mike Guest Posts: n/a	A Hex mesh would be best for this pipe. You can switch the meshing mode to Patran Meshing from the Preferences menu in CFX-Build to allow Hex meshing. Your support rep should be able to tell you more about using this feature. Mike

October 8, 2002, 02:16	Re: sources	#6
David George Guest Posts: n/a	Thanks Mike. First I want to try Patran method.

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