mass flow through surfaces in CFD-Post

rfavalli · August 20, 2015, 11:44

Hello.

I need to calculate the mass flow through a cilyndrical surface in CFD-Post, but I want to get only the mass flow entering into the surface, and exclude what comes out of it. IS it possible? If it is, how do I do it?

ghorrocks · August 20, 2015, 19:30

You could integrate the velocity vector with massFlowAveAbs

Or do a conditional statement on the velocity vector to only get the positive bits and integrate that.

rfavalli · August 21, 2015, 08:33

Quote:

Originally Posted by ghorrocks

You could integrate the velocity vector with massFlowAveAbs

Or do a conditional statement on the velocity vector to only get the positive bits and integrate that.

Thanks for your reply, Glenn.

Theoretically I know what I have to do, but I wish to know how to implement that on CFD-post... Is it via CEL, command line, etc...

August 20, 2015, 11:44	mass flow through surfaces in CFD-Post	#1
rfavalli New Member RCris Join Date: Aug 2015 Posts: 6 Rep Power: 11	Hello. I need to calculate the mass flow through a cilyndrical surface in CFD-Post, but I want to get only the mass flow entering into the surface, and exclude what comes out of it. IS it possible? If it is, how do I do it?

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August 20, 2015, 19:30		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	You could integrate the velocity vector with massFlowAveAbs Or do a conditional statement on the velocity vector to only get the positive bits and integrate that.