Writing data file for specified variables

SH_P · June 17, 2012, 13:58

Hello friends,

I am doing a transient simulation on a large mesh resulting in large data files. Is there any way to reduce data files size.

The only quantities that I need are velocity and pressure, However fluent write many others which are of no use for me and I could not dis-select the default variables in data file quantities window.

Please help me. my thesis depends on this simulation an I really can not handle such huge amount of data.

Thanks in advance.

SH_P · June 18, 2012, 13:20

Someone told me that there must be a way to write a UDF in order to specify variables to write. Does anyone know how to do this? I want my .dat file be connected to .cas file with less variable.

SO the question is how to write a output file (with UDF maybe) with the same format as the original fluent data file which is connected to the corresponding case file ?
Thanks.

coglione · June 19, 2012, 03:21

Maybe writing an interpolation-file (file/interpolate) will do the trick for you. Test it for a given solution-time and if it works fine (check if your velocity and pressure fields are the same as in the corresponding .dat) use a macro to save an interpolation file at specified intervals during the simulation.

cheers

June 17, 2012, 13:58	Writing data file for specified variables	#1
SH_P Member Soroush Join Date: Mar 2010 Posts: 52 Rep Power: 16	Hello friends, I am doing a transient simulation on a large mesh resulting in large data files. Is there any way to reduce data files size. The only quantities that I need are velocity and pressure, However fluent write many others which are of no use for me and I could not dis-select the default variables in data file quantities window. Please help me. my thesis depends on this simulation an I really can not handle such huge amount of data. Thanks in advance.

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June 18, 2012, 13:20		#2
SH_P Member Soroush Join Date: Mar 2010 Posts: 52 Rep Power: 16	Someone told me that there must be a way to write a UDF in order to specify variables to write. Does anyone know how to do this? I want my .dat file be connected to .cas file with less variable. SO the question is how to write a output file (with UDF maybe) with the same format as the original fluent data file which is connected to the corresponding case file ? Thanks.

June 19, 2012, 03:21		#3
coglione Senior Member Max Join Date: Mar 2009 Posts: 133 Rep Power: 17	Maybe writing an interpolation-file (file/interpolate) will do the trick for you. Test it for a given solution-time and if it works fine (check if your velocity and pressure fields are the same as in the corresponding .dat) use a macro to save an interpolation file at specified intervals during the simulation. cheers