Files made by CATHARE team in 2023 for the UNEP/IMEO working group on
“estimate of total methane emissions from the Nord Stream gas leak incident”

CATHARE code licence can be get at https://cathare.cea.fr/Pages/Contact/Contact_Us.aspx 
The CATHARE license is free for non-commercial use (university, ...)

Files description :
1/Main input files for CATHARE code :
-NS1_A_N.dat is the main input deck to compute the break flow rate corresponding to the ‘Russia to rupture localization’  pipeline part for NS1-pipe A break, localized at pos. 55° 33,40'N - 015° 47,30'E (in Swedish EEZ) ; the rupture has occurred on 26 September 2022 at 19:03 CEST.
-NS1_A_S.dat is the main input deck to compute the break flow rate corresponding to the 'Germany to rupture localization’ pipeline part for NS1-pipe A break, localized at pos. 55° 33,40'N - 015° 47,30'E (in Swedish EEZ) ; the rupture has occurred on 26 September 2022 at 19:03 CEST.
-NS1_B_N.dat is the main input deck to compute the break flow rate corresponding to the ‘Russia to rupture localization’  pipeline part for NS1-pipe B break, localized at pos. 55° 32,10'N - 015° 41,90'E (in Danish EEZ)  ; the rupture has occurred on 26 September 2022 at 19:03 CEST.
-NS1_B_S.dat is the main input deck to compute the break flow rate corresponding to the 'Germany to rupture localization’ pipeline part for NS1-pipe B break, localized at pos. 55° 32,10'N - 015° 41,90'E (in Danish EEZ)  ; the rupture has occurred on 26 September 2022 at 19:03 CEST.
-NS2_A_N.dat is the main input deck to compute the break flow rate corresponding to the ‘Russia to rupture localization’  pipeline part for NS2-pipe A break, localized at pos. 54° 52.60'N - 015° 24.60'E (in Danish EEZ)  ; the rupture has occurred on 26 September 2022 at 02:03 CEST.
-NS2_A_S.dat is the main input deck to compute the break flow rate corresponding to the 'Germany to rupture localization’ pipeline part for NS2-pipe A break, localized at pos. 54° 52.60'N - 015° 24.60'E (in Danish EEZ)  ; the rupture has occurred on 26 September 2022 at 02:03 CEST.

2/Secondary input files, theses files are includes in the main inputs files :
- Data_NS.dat : data from Extended Data Table 3 
- Exec_block.dat : transient management
- Fluid.dat : fluid topology definition
- geom_CL.dat : geometry and limit conditions definitions
- wall_south.dat : wall of the southern part of the pipelines
- wall_south.dat : wall of the northern part of the pipelines
- sensi.dat : sensivity parameters

3/ jddg.dat is the post-treatment input deck

4/ NG4.MIX is the files which contain the Natural Gas composition used by CATHARE (Extended Data Table 4), this file is used  by REFPROP

5/ Script :
- calcul.unix is a script used to run CATHARE code and CATHARE input deck
- liste_pipe is a test file used by calcul.unix
- posttraitement.unix is a script used to run the post-treatment
- liste_post is a test file used by posttraitement.unix