Failed to run NIST_Douglas_Firs fds file

[GetPython2020]

I am trying to run a .fds file downloaded from /Validation/NIST_Douglas_Firs/FDS_Input_Files/tree_5_m_26_pc.fds in FDS 6.10 but keep getting an ERROR(101): Problem with SURF number 2, line number 30. I have the vegetation_model_.txt in the same folder and also tried to copy and paste the txt into the fds file, but always get the error about SURF. Anyone know how to fix it? Thanks.

[mcgratta]

I'll take a look.

[mcgratta]

Type fds at the console and paste it here. I want to know the exact version.

[GetPython2020]

FDS-6.10.1-0-g12efa16-release

[mcgratta]

Paste the second SURF line here

[GetPython2020]

the file is at: https://github.com/firemodels/fds/blob/master/Validation/NIST_Douglas_Firs/FDS_Input_Files/tree_5_m_26_pc.fds

&SURF ID = 'small roundwood'
MATL_ID(1,1) = 'GENERIC VEGETATION'
MATL_MASS_FRACTION(1,1) = 1.0
MOISTURE_CONTENT = 0.26
SURFACE_VOLUME_RATIO = 2667.
LENGTH = 0.10
GEOMETRY = 'CYLINDRICAL' /

The line number mentioned in the ERROR is not the exact line where the SURF located.

[mcgratta]

Now I see it. We changed the parameter MOISTURE_FRACTION to MOISTURE_CONTENT because that is the name that is more commonly used. The current code is backward compatible, but your version is not forward compatible. So change all the MOISTURE_CONTENTs back to MOISTURE_FRACTION in both the .fds and .txt files.

[GetPython2020]

Now it works. Thank you.