CGNS for Tecplot

Dr.J · April 19, 2009, 22:00

Hi guys!

In a transient simulation, if you ask CFX to create CGNS output files, it does it but creates one file each timestep. So if I have 5 timestep I will have 5 files.
But Tecplot to work with unsteady simulations wants all the timesteps in one single CGNS file.
Do you know if exists a small program/code that can put together all the CGNS files in order to work with Tecplot?

Cheers

minger · April 27, 2009, 12:45

Check out the NASA GRC CGNS utlities (I personally use plot3d_to_cgns)

http://www.grc.nasa.gov/WWW/cgns/cgn...ies/index.html

Dr.J · April 29, 2009, 18:28

Thanks man!

I feel stupid but... I don't know how to use it. I mean... I don't know how to use the cgnstools, since it requires also tcl... could you tell what I have to do?

Cheers

J

minger · April 30, 2009, 09:14

From what I understand, either Linux or Windows, all executables need to be ran from the command line. Since I have a Windows machine here, I start up cmd.exe and navigate to where the executable is.

If I do a
plot3d_to_cgns -help

Then I get all the required arguments and options. So, to actually do my plot3d to cgns conversion, my particular command is

./> plot3d_to_cgns -fc grid.fast flow.fast output.cgns

Where -f means formatted text, and -c means convert to primitive variables. After you install just navigate to the folder and do a help on the function to see whats required.

Mimou · June 22, 2010, 12:35

Hi minger,

How could install CGNS ? I'm using a VS .NET 2003 with f90. Thanks in advance.

hamzamotiwala · November 4, 2010, 05:15

Hello,

I am new to this forum. Since the discussion was about CGNS, I thought of making a relevant request .I am looking for a working sample C program that can read and write data from an unstructured grid file in CGNS Format. Can anyone help me out with this problem please. Will really appreciate the help.

Thanks

April 19, 2009, 22:00	CGNS for Tecplot	#1
Dr.J New Member Jacopo Biasetti Join Date: Apr 2009 Posts: 6 Rep Power: 17	Hi guys! In a transient simulation, if you ask CFX to create CGNS output files, it does it but creates one file each timestep. So if I have 5 timestep I will have 5 files. But Tecplot to work with unsteady simulations wants all the timesteps in one single CGNS file. Do you know if exists a small program/code that can put together all the CGNS files in order to work with Tecplot? Cheers

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April 27, 2009, 12:45		#2
minger Member Join Date: Apr 2009 Posts: 36 Rep Power: 17	Check out the NASA GRC CGNS utlities (I personally use plot3d_to_cgns) http://www.grc.nasa.gov/WWW/cgns/cgn...ies/index.html

April 29, 2009, 18:28		#3
Dr.J New Member Jacopo Biasetti Join Date: Apr 2009 Posts: 6 Rep Power: 17	Thanks man! I feel stupid but... I don't know how to use it. I mean... I don't know how to use the cgnstools, since it requires also tcl... could you tell what I have to do? Cheers J

April 30, 2009, 09:14		#4
minger Member Join Date: Apr 2009 Posts: 36 Rep Power: 17	From what I understand, either Linux or Windows, all executables need to be ran from the command line. Since I have a Windows machine here, I start up cmd.exe and navigate to where the executable is. If I do a plot3d_to_cgns -help Then I get all the required arguments and options. So, to actually do my plot3d to cgns conversion, my particular command is ./> plot3d_to_cgns -fc grid.fast flow.fast output.cgns Where -f means formatted text, and -c means convert to primitive variables. After you install just navigate to the folder and do a help on the function to see whats required.

June 22, 2010, 12:35		#5
Mimou New Member Mimou Join Date: Jun 2010 Posts: 2 Rep Power: 0	Hi minger, How could install CGNS ? I'm using a VS .NET 2003 with f90. Thanks in advance.

November 4, 2010, 05:15		#6
hamzamotiwala Member Hamza Motiwala Join Date: Nov 2010 Posts: 41 Rep Power: 16	Hello, I am new to this forum. Since the discussion was about CGNS, I thought of making a relevant request .I am looking for a working sample C program that can read and write data from an unstructured grid file in CGNS Format. Can anyone help me out with this problem please. Will really appreciate the help. Thanks