SCALE Software Coordinator
This topic has been migrated from the SCALE 6 notebook.
Date: Wed Sep 22 22:40:16 2010
I am trying to do an analytical benchmark with NEWT. I have the exact solution to a two group infinite medium problem. I want to perturb the macroscopic cross sections generated by newt and compare the results to my analytical solution. I generated the two group cross section from the command
read collapse
8r1 36r2
end collapse
I then generate the macroscopic cross section from the command
read hmog
500 fuel 1 end
end hmog
The macroscopic cross section is printed to ft13001. I then run my problem using the xlnib=13 and everything works perfectly.
I am now trying to change the macroscopic cross section so I need to convert ft13001 to its text format. I use the awl to do this with the command
=awl
ft13f001 ascii.lib binary_to_character
end
And it seems to convert it to text. However when I try to go back to bin I get an error with this command
=awl
ascii.lib ft13f001 character_to_binary
end
I can use awl for ft04f001 and ft30f001 with no problem. I was wondering if awl was meant to read macroscopic cross sections too.
Also I was wondering if you could recommend a different way of modifying the macroscopic cross sections. Thanks
I also found one other problem. When I try to run the Macroscopic cross section ft13f001 I get the following problem
************************************************************************************************************************************
Execution stopped in STOPIT. Error code = 28
Error: Nuclide 0 was found on the mixing table but was not found on the associated cross-section library.
************************************************************************************************************************************
********************Solution*******************************************
So we came up with a temporary solution to the problem
To convert back to bin I changed the initial header from
******** 1 2 2 0 0 0 1 0 0
to :
44000 1 2 2 0 0 0 1 0 0
As for the second problem the solution is a little more complex. I needed to add a placeholder for the radionuclide zero. I will attach the new text file that I used to run Macroscopic cross sections so that people can see what I did to correct the second problem
*****************************************
Joshua Peterson