Text command line for particle current position

mehrzad · January 28, 2015, 01:30

Hello dear cfd-online.com friends
I am simulating a unsteady case of DPM in fluent and i need to extract the position of particle after each time step. i can save the data file via calculation activity and then extract the current postion of particle for each time step which need a lot effort an it's exhausting when the number of time step is too large. is there any way to create a macro to extract and write to the file the current position to a "his" file via text command line?
i want to save each file with name contain the associate time step.
for example for 0.1 time step
particle-0.1.his
particle-0.2.his
particle-0.3.his
and so on ...
I can access by the graphical display but it overwrite the previous time step file because it can not assign the new name to it.

alibidar12 · April 15, 2015, 01:58

hi mehrzad i simulate unsteady dpm.
can you help me for start and stop time in dpm.
i have trouble with this.
are you iranian?
thanks a lot.

mehrzad · April 15, 2015, 05:33

Quote:

Originally Posted by alibidar12

hi mehrzad i simulate unsteady dpm.
can you help me for start and stop time in dpm.
i have trouble with this.
are you iranian?
thanks a lot.

what about the start stop time?
the start time indicate the time that particle injected in domain for example
you want to inject particle in 2nd second you set the start time"2" and you want to stop the injection at 3rd second you set the stop time "3" in this period 1s the particle will be inject to the domain on the time step you set before.
yes I'm from Iran.
feel free to contact me through private message any time.

January 28, 2015, 01:30	Text command line for particle current position	#1
mehrzad New Member mehrzad Join Date: Jul 2011 Posts: 23 Rep Power: 14	Hello dear cfd-online.com friends I am simulating a unsteady case of DPM in fluent and i need to extract the position of particle after each time step. i can save the data file via calculation activity and then extract the current postion of particle for each time step which need a lot effort an it's exhausting when the number of time step is too large. is there any way to create a macro to extract and write to the file the current position to a "his" file via text command line? i want to save each file with name contain the associate time step. for example for 0.1 time step particle-0.1.his particle-0.2.his particle-0.3.his and so on ... I can access by the graphical display but it overwrite the previous time step file because it can not assign the new name to it. Last edited by mehrzad; January 28, 2015 at 23:21.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Current density visualisation (PEM fuel cell add-on module)	pchoopanya	FLUENT	10	August 21, 2023 14:33
current position of particles	mehrzad	FLUENT	17	October 16, 2014 08:00
Change current working directory with a text command?	macfly	FLUENT	1	May 7, 2014 01:39
DPM UDF particle position using the macro P_POS(p)[i]	dm2747	FLUENT	0	April 17, 2009 01:29
How can I get the particle current position in UDF	cfdfans	FLUENT	4	April 2, 2001 05:03

April 15, 2015, 01:58		#2
alibidar12 New Member Ali Naghi Ghasemi Bidar Join Date: Feb 2015 Posts: 6 Rep Power: 11	hi mehrzad i simulate unsteady dpm. can you help me for start and stop time in dpm. i have trouble with this. are you iranian? thanks a lot.