Learning Forum

[Sakib Abir]

I am trying to get drag average drag coefficient for a certain geometry at some certain Reynolds number. My drag and lift coefficient plots are stabilized with a fluctuation and after the simulation when i calculate the drag or lift coefficients it shows me the instantaneous value of the plot where the simulation stops. But I need to know the maximum, minimum and average drag or lift coefficient values from that fluctuating plots. Can anyone help me about this, please?  

[Amine Ben Hadj Ali]

1/Export the Report as Outfile and do post-processing outside of Fuent to get Max, Min and Average

Or

2/Store Forces in Cell Memories and do all in Point 1/ via User Defined Functions.

 

[Sakib Abir]

Thank you very much for your reply sir. But I am very sorry I could not understand properly. It would be very helpful if you could kindly tell me in a bit details. Actually I am very new to ANSYS as well as in research and my work is stuck for this lack of information. I don't know from where I should export the reoprt as outfile. I am still searching for it. 

[Amine Ben Hadj Ali]

When creating Drag Report or Lift Report you have the option (and in the newst versions always selected) to write an out-file (text file) with the Drag and Lift Values vs time step or flow time. Please have a look into the help and search after Report Definition.

[Sakib Abir]

Dear sir, Thank you very much. I found out how to create report.out file. And did you meant that I need to find out my desired max, min and avg. drag coefficient from the data on my own in Excel? I was finding if there is any built in option in  ANSYS where I can activate the option to calculate max, min or avg? I found there is force option in report definition from where i can just calculate instaneous drag or lift coefficients. 

 

[Amine Ben Hadj Ali]

As mentioned in my first message the only one option will be to the work using UDF to track the forces, the mean, minimum and maximum over time in Ansys Fluent.