convergence plot interpretation

convergence plot interpretation

mariana_marinX8HLV
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convergence plot interpretation

mariana_marinX8HLV
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Hi, I am currently running my simulation of a transient liquid flow through a flow separator structure (excess flow spills out and the other continues down the pipe). The mesh is not very dense for the dimensions of the structure (5 cm uniform), the model was working for more than 8 hours, almost 9 hours and during this time it had significant changes in the convergence graph, for a time of 4 hours the graph looked like this:

mariana_marinX8HLV_0-1682696331356.png

 

for a time of 5 hours it looked like this:

mariana_marinX8HLV_1-1682696404470.png

for a time of 7 hours it looked like this:

mariana_marinX8HLV_2-1682696443779.png

for a time of 8 hours it looked like this:

mariana_marinX8HLV_0-1682696866005.png

 

mariana_marinX8HLV_3-1682696481134.png

Based on my criteria and comparing the different graphs, it can be assumed that the simulation converged, but I'm not totally sure if it is, or if I should let it run longer.

 

Thank you very much for any suggestions, I also attached a .cfz file for your analysis.

 

 

 

 

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marwan_azzam
Alumni
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Accepted solution

It looks like it did converge but to a state of steady fluctuation.

Some flows do behave like that.

 

Marwan