Learning Forum

[dheeraj_jaisingh]

I am running a CFD simulation to try and optimise the residence time in a domain as the particles move from the inlet to the outlet. The inlet is a velocity BC and the outlet a pressure BC, and both are input parameters. I want to study how the Residence time varies with the outlet gauge pressure. Any suggestions on how to view the average particle residence time at the outlet surface as an output parameter? Thank you in advance :)

[Rob]

I don't think you can. The residence time is stored on the particle but the parameters are attached to the cells. Also, one cell may have many particles pass through it each having a different residence time. The DPM Summary (dpm.out files) will give you the data you want, but you'd need to use Excel or the like to get the mean value.

[dheeraj_jaisingh]

Thank you for the reply. Actually, there is an average Elapsed Time (s) value in the DPM Summary file for the selected injection, and there's an option to write to a file or to the console. I'll make use of that.