Monitor points in multiphase flow

stuart230588 · January 17, 2014, 06:41

I am trying to create an expression for an additional variable monitor point.

The expression I have is: volumeInt(Radiation)@Fluid

This has been working fine for single phase fluid flow but I would now like to model multiphase and was wondering how to apply this to expression to a specific fluid.

Probably simple, I just can't think how to do it.

Thanks,
Stuart

Raijin Thunderkeg · January 17, 2014, 07:03

Take a water-air system for example, if u want to monitor the air volume fraction mixing in the tank, u can use volumeAve(air.vf)@Tank.
Similarly, u can use volumeInt(Phase A.Radiation)@REGION in your case.

stuart230588 · March 12, 2014, 09:14

Thanks for your reply, however I am still having problems with it.

When I enter the expression as you suggested, i.e. volumeInt(Air.Radiation)@Fluid I receive a different error message : The additional variable 'Air.Radiation' referenced in parameter 'Expression Value' in object '/FLOW:Flow Analysis 1/OUTPUT CONTROL/MONITOR OBJECTS/MONITOR POINT:Radiation does not exist in Domain 'Fluid'.

January 17, 2014, 06:41	Monitor points in multiphase flow	#1
stuart230588 New Member Join Date: Oct 2013 Posts: 25 Rep Power: 12	I am trying to create an expression for an additional variable monitor point. The expression I have is: volumeInt(Radiation)@Fluid This has been working fine for single phase fluid flow but I would now like to model multiphase and was wondering how to apply this to expression to a specific fluid. Probably simple, I just can't think how to do it. Thanks, Stuart

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
About Some Concepts:Laminar flow, turbulent flow, steady flow and time-dependent flow	Jing	Main CFD Forum	8	October 5, 2018 17:02
multiphase flow ，mass and volume fraction imbalance	sope111	CFX	16	September 3, 2018 00:10
Review: Reversed flow	CRT	FLUENT	1	May 7, 2018 05:36
Multiphase Flow with NIST Real Gas Model	Annka	FLUENT	7	May 23, 2017 07:58
Capillary pressure in multiphase flow in porous media	Lalit	FLUENT	0	March 21, 2013 01:24

January 17, 2014, 07:03		#2
Raijin Thunderkeg Member JESS Join Date: Nov 2010 Posts: 31 Rep Power: 15	Take a water-air system for example, if u want to monitor the air volume fraction mixing in the tank, u can use volumeAve(air.vf)@Tank. Similarly, u can use volumeInt(Phase A.Radiation)@REGION in your case.

March 12, 2014, 09:14		#3
stuart230588 New Member Join Date: Oct 2013 Posts: 25 Rep Power: 12	Thanks for your reply, however I am still having problems with it. When I enter the expression as you suggested, i.e. volumeInt(Air.Radiation)@Fluid I receive a different error message : The additional variable 'Air.Radiation' referenced in parameter 'Expression Value' in object '/FLOW:Flow Analysis 1/OUTPUT CONTROL/MONITOR OBJECTS/MONITOR POINT:Radiation does not exist in Domain 'Fluid'.