# Monitoring convergence by pressure drop in fluent

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 November 24, 2014, 12:13 Monitoring convergence by pressure drop in fluent #1 New Member   hamid Join Date: Oct 2014 Posts: 6 Rep Power: 4 Hi everybody, How can monitor convergence by the pressure drop value in fluent? Actually how can define pressure drop value for monitoring and what is the criteria? Thanks in advance for any help.

 November 25, 2014, 04:49 #2 Member   Join Date: Nov 2010 Posts: 90 Rep Power: 8 General comment: Using pressure drop solely isn't a good choice of convergence. But let's say you know the exact value of pressure drop in your domain (from experiment maybe!). What you can do is defining two different planes (or 2 lines if you are modeling 2D) on the levels where the pressures are known. You can get the average values on those planes and then make a costume defined function to subtract the values. Finally plot the result against time. cheers!

May 30, 2016, 15:20
#3
New Member

Bramantyo
Join Date: May 2016
Location: Java
Posts: 11
Rep Power: 3
Quote:
 You can get the average values on those planes and then make a costume defined function to subtract the values. Finally plot the result against time.
Could anyone explain to me, what is the formula in the custom defined function??

Is it P - P ?

Thanks!

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