How to read dat file of Fluent using Matlab?

Kanhlbai · November 27, 2015, 03:54

HI everyone

I have saved a time series of .dat files in Fulent and now want to post-process these file. I am trying to read these .dat files using Matlab but it seems there is no information on the data format of these .dat files. Could any one help?

Many thanks in advance!
Ken

sbaffini · November 28, 2015, 03:40

It is present in the manual. But, unless you are trying to go into something really complex, the typical approach to postprocessing is to just save monitors/profiles and post-process them, which are much more easy to manage. This is especially true for memory, as soon as you go beyond 1Mln cells, you either are really good in Matlab or it is going to be very slow in reading files.

Kanhlbai · November 29, 2015, 21:20

Quote:

Originally Posted by sbaffini

It is present in the manual. But, unless you are trying to go into something really complex, the typical approach to postprocessing is to just save monitors/profiles and post-process them, which are much more easy to manage. This is especially true for memory, as soon as you go beyond 1Mln cells, you either are really good in Matlab or it is going to be very slow in reading files.

HI Sbafinni

Thanks very much for your reply. Would you please sepecify where I can get the information on the .dat file formation in the mannual?

Ken

LuckyTran · November 30, 2015, 11:35

It's in the Fluent User's Guide, Appendix B.

Also, note that usually the .cas and .dat files are saved in binary format, which makes importing them that much more annoying.

Usually you save monitors and profiles and only post-process those variables. If you need the entire .dat file, it's better to do the processing directly in Fluent or via a dedicated post-processor rather than writing your own code from scratch.

November 27, 2015, 03:54	How to read dat file of Fluent using Matlab?	#1
Kanhlbai New Member Kanhlbai Join Date: Oct 2015 Posts: 3 Rep Power: 10	HI everyone I have saved a time series of .dat files in Fulent and now want to post-process these file. I am trying to read these .dat files using Matlab but it seems there is no information on the data format of these .dat files. Could any one help? Many thanks in advance! Ken

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November 28, 2015, 03:40		#2
sbaffini Senior Member Paolo Lampitella Join Date: Mar 2009 Location: Italy Posts: 2,151 Blog Entries: 29 Rep Power: 39	It is present in the manual. But, unless you are trying to go into something really complex, the typical approach to postprocessing is to just save monitors/profiles and post-process them, which are much more easy to manage. This is especially true for memory, as soon as you go beyond 1Mln cells, you either are really good in Matlab or it is going to be very slow in reading files.

November 30, 2015, 11:35		#4
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,674 Rep Power: 65	It's in the Fluent User's Guide, Appendix B. Also, note that usually the .cas and .dat files are saved in binary format, which makes importing them that much more annoying. Usually you save monitors and profiles and only post-process those variables. If you need the entire .dat file, it's better to do the processing directly in Fluent or via a dedicated post-processor rather than writing your own code from scratch.