Count Particle at Region

IrieConqueror · April 3, 2020, 06:27

hey,
i do euler lagrange simulation. i have different particle diameter. after, lets say 50s (stop criterion), i want to know how many particles of all specific diameters reached a wall.
i know i can set every diameter individually in PRE, do the simulation and the out-file shows me how many reached the wall.
but i want to examine alot of different diameters, so i would like to simulate them all at once, but then i don't know how to get the information.
can somebody help?
thanks and greets

Gert-Jan · April 3, 2020, 07:50

In Pre, got to Output Control. There you define .csv-files that the solver creates at the end of each particle track. It allows you to control the location (outlet, wall1, wall2, .. ) and the variables. One the variables can be the particle diameter.
Then open the csv in your spread sheet and sort on diameter.

IrieConqueror · April 6, 2020, 08:29

Nice! Thank you

IrieConqueror · April 7, 2020, 08:24

I tried to solve the "problem" in two different ways.
First i set every diameter individually in PRE and checked the .out-file.
After that I did what Gert-Jan suggestet.
The results are similar but not identically. Are there differences between "mean particle diameter" and "the specified diameter" (in PRE)?
I used the same .def-file for both simulations, just changed from "discrete diameter distribution" to "specified diameter".
Any ideas?

April 3, 2020, 06:27	Count Particle at Region	#1
IrieConqueror New Member Join Date: Jan 2020 Location: Germany Posts: 24 Rep Power: 6	hey, i do euler lagrange simulation. i have different particle diameter. after, lets say 50s (stop criterion), i want to know how many particles of all specific diameters reached a wall. i know i can set every diameter individually in PRE, do the simulation and the out-file shows me how many reached the wall. but i want to examine alot of different diameters, so i would like to simulate them all at once, but then i don't know how to get the information. can somebody help? thanks and greets

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April 3, 2020, 07:50		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,929 Rep Power: 28	In Pre, got to Output Control. There you define .csv-files that the solver creates at the end of each particle track. It allows you to control the location (outlet, wall1, wall2, .. ) and the variables. One the variables can be the particle diameter. Then open the csv in your spread sheet and sort on diameter.

April 6, 2020, 08:29		#3
IrieConqueror New Member Join Date: Jan 2020 Location: Germany Posts: 24 Rep Power: 6	Nice! Thank you

April 7, 2020, 08:24		#4
IrieConqueror New Member Join Date: Jan 2020 Location: Germany Posts: 24 Rep Power: 6	I tried to solve the "problem" in two different ways. First i set every diameter individually in PRE and checked the .out-file. After that I did what Gert-Jan suggestet. The results are similar but not identically. Are there differences between "mean particle diameter" and "the specified diameter" (in PRE)? I used the same .def-file for both simulations, just changed from "discrete diameter distribution" to "specified diameter". Any ideas?