params_impy_coronal_m.f90 Source File


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Source Code

module params_impy_coronal_m
    !! Parameters related with cornal impurity
    use precision_grillix_m, only : GP
    use error_handling_grillix_m, only: handle_error
    use status_codes_grillix_m, only : GRILLIX_ERR_NAMELIST
    use screen_io_m, only :  get_stdout
    use technical_constants_m, only : PATHLEN_MAX
    implicit none
        
    real(GP), protected :: impy_concentration = - 1.0_GP
    !! Impurity concentration (fraction of electron density)
    !! <= 0 disables functionality
    character(len=PATHLEN_MAX), protected :: impy_path = 'coronal_nitrogen.dat'
    !! Filepath to radiation rate coefficient table
    integer, protected :: impy_tab_length = 121
    !! Number of data points in the table

    public :: read_params_impy_coronal
    public :: write_params_impy_coronal
    
    namelist / impy_coronal / &
        impy_concentration, &
        impy_path, &
        impy_tab_length
    private impy_coronal

contains

   subroutine read_params_impy_coronal(filename)
        !! Reads parameters related with impy_coronal
        character(len=*), intent(in) :: filename
        !! Filename, to read from 
        
        integer :: io_unit, io_error
        character(len=256) :: io_errmsg 
         
        open(newunit=io_unit, file=filename, status='old', action='read', &
            iostat=io_error, iomsg=io_errmsg)
        if (io_error /= 0) then
            call handle_error(io_errmsg, GRILLIX_ERR_NAMELIST, &
                              __LINE__, __FILE__)
        endif
  
        read(io_unit, nml=impy_coronal, iostat=io_error, iomsg=io_errmsg)
        if (io_error /= 0) then
            call handle_error(io_errmsg, GRILLIX_ERR_NAMELIST, &
                              __LINE__, __FILE__)
        endif

        close(io_unit)

    end subroutine
    
    subroutine write_params_impy_coronal(filename)
        !! Reads parameters related with impy_coronal
        character(len=*), intent(in), optional :: filename
        !! If present, filename where params are written to, 
        !! if not present, writes to screen 
        
        integer :: io_unit, io_error
        character(len=256) :: io_errmsg 
         
        if (present(filename)) then
            open(newunit=io_unit, file=filename, status='unknown', &
                access='append', action='write', &
                iostat=io_error, iomsg=io_errmsg )
            if (io_error /= 0) then
                call handle_error(io_errmsg, GRILLIX_ERR_NAMELIST, &
                                  __LINE__, __FILE__)
            endif
        else
            io_unit = get_stdout()
        endif

        write(io_unit, nml=impy_coronal, iostat=io_error, iomsg=io_errmsg)
        if (io_error /= 0) then
            call handle_error(io_errmsg, GRILLIX_ERR_NAMELIST, &
                              __LINE__, __FILE__)
        endif

        if (present(filename)) then
            close(io_unit)
        endif

    end subroutine

end module