Importing a SOLPS-ITER background

It is possible to perform a DIVIMP simulations using a background generated by the 2D fluid code SOLPS-ITER. When setting up the DIVIMP input file, perform the following steps.

  • Copy the fort.31 file from the “run” folder of the SOLPS-ITER simulation to the shots folder

  • Rename file without the extension, up to you what to call it

    • E.g., shotnumber_timeslice_mesh-number_run_solps_solution

  • Within the DIVIMP input file include the following input options (F05, F06, F17, F18):

    '+F05 SONNET-Number of Fluids in B2 Background Plasma File' 7  # D+C
'+F06 Read Aux. Background Input File 0=off 1=on          ' 0
'*F17 SOLPS Vb interpolation option 0-boundary 1-centered ' 1
'*F18 SOLPS fort.31 file format specifier 0=4.3+ 1=ITER   ' 2

  • F05

    • represents the number of fluids in the SOLPS background fort.31 plasma file

    • will likely be 7 for all D+C SOLPS-ITER simulations

    • will be higher if extra species are included

  • F18

    • set to 1 or 2 for all SOLPS-ITER simulations

    • if =1, all parallel velocity values are multiplied by -1

    • if =2, no modification is made

    • this may need to be changed depending on X-pt. up vs. X-pt. down DIVIMP expects the velocity to be negative at the low index or S=0 target at the start of the ring and positive at the high index target