How to obtain the mass flow rate with CEL functions

longderson · December 29, 2020, 06:14

Dear CFX users,

Recently I got a problem. I tried to obtain the mass flow rate of a specific component at an inlet boundary with the CEL functions 'massFlowInt()@'. It works pretty well and the result is exactly the same as the one displayed in the monitor. However, when a boundary source was added, this function will return the overall flow rate (plus the source). Is there any way to obtain the real mass rate without accounting the source term?

Cheers

ghorrocks · January 5, 2021, 18:30

Set your mass source to a variable, and write that variable to a monitor point. Then you can subtract it from the total mass flow from your existing function.

December 29, 2020, 06:14	How to obtain the mass flow rate with CEL functions	#1
longderson New Member Join Date: Apr 2018 Posts: 12 Rep Power: 8	Dear CFX users, Recently I got a problem. I tried to obtain the mass flow rate of a specific component at an inlet boundary with the CEL functions 'massFlowInt()@'. It works pretty well and the result is exactly the same as the one displayed in the monitor. However, when a boundary source was added, this function will return the overall flow rate (plus the source). Is there any way to obtain the real mass rate without accounting the source term? Cheers

January 5, 2021, 18:30		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,893 Rep Power: 144	Set your mass source to a variable, and write that variable to a monitor point. Then you can subtract it from the total mass flow from your existing function. longderson likes this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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