Reading .dat file

shivakumar · March 6, 2015, 06:13

Hi,

How the connectivity between cells/nodes in the output ASCII file of fluent.? Is it one after the another or random?

. In mesh file, cells/ nodes arranged in random. I needed this solution information for further coding.. Any help would be appreciated.

Thanks
Shivakumar

ImolaSpa · March 6, 2015, 16:37

I had issues with this when i was looking at data. I had a structured mesh from ICEM. I found the cells/nodes are ordered in accordance with the blocking. Had to create a MatLab code to work with the data properly.

shivakumar · March 12, 2015, 03:01

I am also not understanding the arrangements of cells/nodes in output file. Have you solved your issue?. I am planning to code in C.

Thanks

`e` · March 12, 2015, 05:34

What data are you trying to record? Alternatively, you could write a UDF to save information to a data file in a format of your choice.

shivakumar · March 12, 2015, 05:56

I need to find out the neighbours of each cell. Later, applying Least square method to calculate gradients

`e` · March 12, 2015, 06:07

You could list the neighbouring cells (with a UDF using F_C0 and F_C1 macros) in a data file and do all of your post processing outside of Fluent. Alternatively, a simpler method would be to evaluate the gradients within Fluent, save them in User-Defined Memory and then export this data to a text file. Here is a thread discussing a method for the neighbouring cells problem.

shivakumar · March 12, 2015, 09:42

Thank you very much.. You're awesome.. I will work on it..

March 6, 2015, 06:13	Reading .dat file	#1
shivakumar Senior Member Join Date: Mar 2013 Location: B'lr Posts: 130 Rep Power: 13	Hi, How the connectivity between cells/nodes in the output ASCII file of fluent.? Is it one after the another or random?. In mesh file, cells/ nodes arranged in random. I needed this solution information for further coding.. Any help would be appreciated. Thanks Shivakumar

March 12, 2015, 06:07		#6
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	You could list the neighbouring cells (with a UDF using F_C0 and F_C1 macros) in a data file and do all of your post processing outside of Fluent. Alternatively, a simpler method would be to evaluate the gradients within Fluent, save them in User-Defined Memory and then export this data to a text file. Here is a thread discussing a method for the neighbouring cells problem. shivakumar likes this.

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March 6, 2015, 16:37		#2
ImolaSpa New Member Jacob Join Date: Oct 2014 Location: Washington State Posts: 6 Rep Power: 11	I had issues with this when i was looking at data. I had a structured mesh from ICEM. I found the cells/nodes are ordered in accordance with the blocking. Had to create a MatLab code to work with the data properly.

March 12, 2015, 03:01		#3
shivakumar Senior Member Join Date: Mar 2013 Location: B'lr Posts: 130 Rep Power: 13	I am also not understanding the arrangements of cells/nodes in output file. Have you solved your issue?. I am planning to code in C. Thanks

March 12, 2015, 05:34		#4
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	What data are you trying to record? Alternatively, you could write a UDF to save information to a data file in a format of your choice.

March 12, 2015, 05:56		#5
shivakumar Senior Member Join Date: Mar 2013 Location: B'lr Posts: 130 Rep Power: 13	I need to find out the neighbours of each cell. Later, applying Least square method to calculate gradients

March 12, 2015, 09:42		#7
shivakumar Senior Member Join Date: Mar 2013 Location: B'lr Posts: 130 Rep Power: 13	Thank you very much.. You're awesome.. I will work on it..