prt_lines_grains.cpp

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/* This file is part of Cloudy and is copyright (C)1978-2022 by Gary J. Ferland and
 * others.  For conditions of distribution and use see copyright notice in license.txt */
/*lines_hydro put H-iso seq into line intensity stack */
#include "cddefines.h"
#include "radius.h"
#include "thermal.h"
#include "dense.h"
#include "grainvar.h"
#include "lines.h"
#include "lines_service.h"

void lines_grains(void)
{
        double 
          dhtot,
          hold;
        long i;

        DEBUG_ENTRY( "lines_grains()" );

        if( !gv.lgGrainPhysicsOn )
        {
                return;
        }

        i = StuffComment( "grains" );
        linadd( 0., (realnum)i , "####", 'i',
                "the grain output");

        /* find total grain heating */
        dhtot = 0.;
        for( size_t nd=0; nd < gv.bin.size(); nd++ )
        {
                /* add heating due to all grain species that are included */
                dhtot += gv.bin[nd]->GasHeatPhotoEl;
        }

        /* total heating due to dust integrated over model */
        gv.TotalDustHeat += (realnum)(dhtot*radius.dVeffAper);
        /* largest fraction of local heating due to grains photo */
        gv.dphmax = MAX2((realnum)(safe_div(dhtot,thermal.htot,0.0)),gv.dphmax);
        /* largest local cooling of gas by collisions with grains */
        gv.dclmax = MAX2(gv.dclmax,(realnum)(safe_div(gv.GasCoolColl,thermal.htot,0.0)));

        /* largest relative number of electrons donated by grains */
        hold = SDIV(dense.EdenTrue);
        gv.GrnElecDonateMax = 
                (realnum)MAX2( gv.GrnElecDonateMax , gv.TotalEden/hold );

        /* largest relative number of electrons on grain surface */
        gv.GrnElecHoldMax = 
                (realnum)MAX2( gv.GrnElecHoldMax , -gv.TotalEden/hold );

        linadd(dhtot,0,"GrGH",'h',
                " gas heating by grain photoionization");

        linadd(thermal.heating(0,25),0,"GrTH",'h',
                " gas heating by thermionic emissions of grains ");

        linadd(MAX2(0.,gv.GasCoolColl),0,"GrGC",'c',
                "gas cooling by collisions with grains ");      

        linadd(MAX2(0.,-gv.GasCoolColl),0,"GrGC",'c',
                " gas heating by collisions with grains ");     

        linadd(gv.GrainHeatSum,0,"GraT",'i',
                " total grain heating by all sources, lines, collisions, incident continuum ");

        linadd(gv.GrainHeatInc,0,"GraI",'i',
                " grain heating by incident continuum ");

        linadd(gv.GrainHeatLya,1215.67,"GraL",'i',
                " grain heating due to destruction of Ly alpha  ");

        linadd(gv.GrainHeatCollSum,0,"GraC",'i',
                " grain heating due to collisions with gas ");

        linadd(gv.GrainHeatDif,0,"GraD",'i',
                " grain heating due to diffuse fields, may also have grain emission ");
        return;

}