does it follows mass, momentum, energy conservatin

August 31, 2008, 03:31

how can we check, that the domain for which we make calculation, is following all conservation laws???

thank you.

August 31, 2008, 21:52

Hi,

Looks at the mass, momentum, energy imbalances. There will also be imbalances for additional variables, volume/mass fraction etc.

Glenn Horrocks

September 1, 2008, 01:08

Thanks Glenn:

would you please tell me; can we get a report of how much mass is flowing at a perticular time, as we get in the fluent. if it option is there than tell me how?

September 1, 2008, 19:13

Hi,

Yes, that is easy. Set up a monitor point under the output settings with an expression something like massFlow()@BoundaryName. Have a look in the CFX Reference manual in the section titled CEL Expression language for more detail on CEL.

Glenn Horrocks

September 2, 2008, 16:10

Actually, flows are already written to the mon file (which the Solver Manager reads from the run directory to make plots). Just create a new plot in the Solver Manager and pick the appropriate boundary region under the FLOWS section.

-CycLone

August 31, 2008, 03:31	does it follows mass, momentum, energy conservatin	#1
NITIN DEWANGAN Guest Posts: n/a	how can we check, that the domain for which we make calculation, is following all conservation laws??? thank you.

August 31, 2008, 21:52	Re: does it follows mass, momentum, energy conserv	#2
Glenn Horrocks Guest Posts: n/a	Hi, Looks at the mass, momentum, energy imbalances. There will also be imbalances for additional variables, volume/mass fraction etc. Glenn Horrocks

September 1, 2008, 01:08	Re: does it follows mass, momentum, energy conserv	#3
Nitin Dewangan Guest Posts: n/a	Thanks Glenn: would you please tell me; can we get a report of how much mass is flowing at a perticular time, as we get in the fluent. if it option is there than tell me how?

September 1, 2008, 19:13	Re: does it follows mass, momentum, energy conserv	#4
Glenn Horrocks Guest Posts: n/a	Hi, Yes, that is easy. Set up a monitor point under the output settings with an expression something like massFlow()@BoundaryName. Have a look in the CFX Reference manual in the section titled CEL Expression language for more detail on CEL. Glenn Horrocks

September 2, 2008, 16:10	Re: does it follows mass, momentum, energy conserv	#5
CycLone Guest Posts: n/a	Actually, flows are already written to the mon file (which the Solver Manager reads from the run directory to make plots). Just create a new plot in the Solver Manager and pick the appropriate boundary region under the FLOWS section. -CycLone

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