/home66/gary/public_html/cloudy/c08_branch/source/iter_end_chk.cpp

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/* This file is part of Cloudy and is copyright (C)1978-2008 by Gary J. Ferland and
 * others.  For conditions of distribution and use see copyright notice in license.txt */
/*iter_end_check after each zone by Cloudy, determines whether model is complete */
#include "cddefines.h"
/*  */
#ifdef EPS
#       undef EPS
#endif
#define EPS     1.00001
#include "lines.h"
#include "mole.h"
#include "conv.h"
#include "rfield.h"
#include "iterations.h"
#include "trace.h"
#include "dense.h"
#include "colden.h"
#include "taulines.h"
#include "hmi.h"
#include "prt.h"
#include "phycon.h"
#include "geometry.h"
#include "stopcalc.h"
#include "opacity.h"
#include "thermal.h"
#include "cooling.h"
#include "pressure.h"
#include "radius.h"
#include "called.h"
#include "wind.h"
#include "hcmap.h"

/*dmpary print all coolants for some zone, as from print cooling command */
STATIC void dmpary(void);

int iter_end_check(void)
{
        bool lgDone, 
          lgEndFun_v, 
          lgPrinted;
        long int i;
        double oxy_in_grains;

        DEBUG_ENTRY( "iter_end_check()" );

        /* >>chng 05 nov 22 - NPA.  Stop calculation when fraction of oxygen frozen
         * out on grains gets too high - 
         * NB this test is not used since StopCalc.StopDepleteFrac is set to > 1 */
        oxy_in_grains = 0.0f;
        for(i=0;i<mole.num_comole_calc;++i)
        {
                /* define the abundance of oxygen frozen out on grain surfaces */
                oxy_in_grains += (1 - COmole[i]->lgGas_Phase)*COmole[i]->hevmol*COmole[i]->nElem[ipOXYGEN];
        }
        /*fprintf(ioQQQ, "DEBUG oxy in grains %.2e %e %e\n", 
                oxy_in_grains ,
                oxy_in_grains/MAX2(SMALLFLOAT,dense.gas_phase[ipOXYGEN]) , StopCalc.StopDepleteFrac );*/

        if( trace.lgTrace )
        {
                fprintf( ioQQQ, " iter_end_check called, zone %li.\n" , nzone);
        }
        ASSERT( hcmap.MapZone >= 00 || !conv.lgSearch );

        /* >>chng 97 jun 09, now called before first zone with nzone 0 */
        if( nzone == 0 )
        {
                lgEndFun_v = false;

                if( trace.lgTrace )
                {
                        fprintf( ioQQQ, " iter_end_check returns, doing nothing since zone 0.\n" );
                }
                return( lgEndFun_v );
        }

        /* check whether trace is needed for this zone and iteration */
        if( (nzone >= trace.nznbug && iteration >= trace.npsbug) && trace.lgTrOvrd )
        {
                if( trace.nTrConvg==0 )
                {
                        geometry.nprint = 1;
                        trace.lgTrace = true;
                }
                else
                        /* trace convergence entered = but with negative flag = make positive,
                         * abs and not mult by -1 since may trigger more than one time */
                        trace.nTrConvg = abs( trace.nTrConvg );
        }

        /* option to turn printout on after certain zone */
        if( prt.lgPrtStart && prt.nstart == nzone )
        {
                called.lgTalk = true;
        }

        /* check whether model is done, various criteria used. */
        lgDone = false;

        /* this is flag to check whether stopping reason was bad */
        conv.lgBadStop = false;

        /* set temperature floor option  -
         * go to constant temperature calculation if temperature
         * falls below floor */
        if( phycon.te < StopCalc.TeFloor )
        {
                thermal.lgTemperatureConstant = true;
                thermal.ConstTemp = (realnum)StopCalc.TeFloor;
                phycon.te = thermal.ConstTemp;
                TempChange(thermal.ConstTemp , false);
                TotalInsanity();
        }

        /* check on radiation pressure - constant pressure unstable if dominated
         * by radiation pressure */
        if( (pressure.lgPres_radiation_ON && pressure.pbeta > 1.0) && 
                (strcmp(dense.chDenseLaw ,"CPRE") == 0) && 
                /* >>chng 03 aug 20, check on extreme values of pbeta, and abort if true */
                (iterations.lgLastIt||(pressure.pbeta>1000.)) &&
                /* >>chng 03 aug 19, add check on pbeta, and abort even if "no abort"
                 * was specified, since rad pres dominated limit can lead to VERY
                 * small H densities and crash due to underflow */
                (pressure.lgRadPresAbortOK||(pressure.pbeta>1000.)) )
        {
                /* const total pres model; if RadPres>PGAS, then unstable, stop */
                if( called.lgTalk )
                {
                        fprintf( ioQQQ, "\n STOP since P(rad)/P(gas)=%7.3f >1.0\n", 
                          pressure.pbeta );

                        fprintf( ioQQQ, " Line contributors to radiation pressure follows:\n" );
                        PrtLinePres();
                }
                lgDone = true;
                conv.lgBadStop = true;
                strncpy( StopCalc.chReasonStop, "of radiation pressure.", sizeof(StopCalc.chReasonStop) );
        }

        /* radius and resulting volume too large for this cpu */
        if( radius.drad_x_fillfac*radius.r1r0sq > BIGFLOAT/10.)
        {
                /* too big */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "volume too large for this cpu.", sizeof(StopCalc.chReasonStop) );
        }
        /* supersonic outflowing wind, initial velocity, windv0, was > 0,
         * but it has coasted to a stop - lgVelPos is false */
        else if( !wind.lgVelPos && wind.windv0 > 0.)
        {
                /* wind solution with negative velocity */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "wind veloc too small.", sizeof(StopCalc.chReasonStop) );
        }

        else if( wind.windv!=0. && fabs(wind.windv) < StopCalc.StopVelocity )
        {
                /* stop if absolute value of velocity falls below value */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "wind V too small.", sizeof(StopCalc.chReasonStop) );
        }

        else if( (StopCalc.nTotalIonizStop>0) && conv.nTotalIoniz> StopCalc.nTotalIonizStop )
        {
                /* stop if exceed number of calls to conv base set with 
                 * stop nTotalIonizStop command */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "nTotalIonizStop reached.", sizeof(StopCalc.chReasonStop) );
        }

        /* this flag says that 21cm line optical depth is the stop quantity */
        else if( StopCalc.lgStop21cm && (HFLines[0].Emis->TauCon >=  StopCalc.tauend) )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "21 cm optical depth.", sizeof(StopCalc.chReasonStop) );
        }

        else if( rfield.extin_mag_V_extended >= StopCalc.AV_extended )
        {
                /* stop at specified AV for (1-g) in scattering opacity */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "A_V reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( rfield.extin_mag_V_point >= StopCalc.AV_point )
        {
                /* stop at specified AV without (1-g) in scattering opacity */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "A_V reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( StopCalc.xMass!=0. &&
                log10(SDIV(dense.xMassTotal))+1.0992099+ 2.*log10(radius.rinner) >= StopCalc.xMass )
        {
                /* stop at specified AV without (1-g) in scattering opacity */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "mass reached.", sizeof(StopCalc.chReasonStop) );
        }

        /* >>chg 02 may 31, added pressure.lgSonicPoint logic */
        /* WJH 19 May 2004: for some models, we want to get through the
         * sonic point and out the other side */ 
        else if( pressure.lgSonicPoint && pressure.lgSonicPointAbortOK )
        {
                /* D-critical solution reached sonic point */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "sonic point reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( dense.EdenTrue==0 )
        {
                /* calculation failed */
                conv.lgBadStop = true;
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "zero electron density.", sizeof(StopCalc.chReasonStop) );
        }

        else if( radius.lgdR2Small )
        {
                lgDone = true;
                conv.lgBadStop = true;
                strncpy( StopCalc.chReasonStop, "DR small rel to thick.", sizeof(StopCalc.chReasonStop) );
        }

        else if( dense.eden < StopCalc.StopElecDensity )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "lowest EDEN reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( dense.eden/dense.gas_phase[ipHYDROGEN] < StopCalc.StopElecFrac )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "low electron fraction.", sizeof(StopCalc.chReasonStop) );
        }

        /* >>chng 05 nov 22, NA add this stop condition - stop when too many molecules
         * are ices or solids on grains - the limit StopCalc.StopDepleteFrac is changed
         * with the stop molecular depletion command */
        else if( dense.lgElmtOn[ipOXYGEN] &&
                (oxy_in_grains/MAX2(SMALLFLOAT,dense.gas_phase[ipOXYGEN])) > StopCalc.StopDepleteFrac )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "freeze out fraction.", sizeof(StopCalc.chReasonStop) );
        }

        /*else if( 2.*hmi.Hmolec[ipMH2g]/dense.gas_phase[ipHYDROGEN] < StopCalc.StopH2MoleFrac )*/
        else if( 2.*hmi.H2_total/dense.gas_phase[ipHYDROGEN] > StopCalc.StopH2MoleFrac )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "large H_2/H fraction.", sizeof(StopCalc.chReasonStop) );
        }

        else if( dense.xIonDense[ipHYDROGEN][1]/dense.gas_phase[ipHYDROGEN] < 
                StopCalc.StopHPlusFrac )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "low H_+/H fraction.", sizeof(StopCalc.chReasonStop) );
        }

        else if( radius.lgDrMinUsed )
        {
                /* dr became too small */
                conv.lgBadStop = true;
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "DRAD small- set DRMIN.", sizeof(StopCalc.chReasonStop) );
        }

        else if( radius.depth >= radius.router[iteration-1]/EPS || radius.lgDrNeg )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "outer radius reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( StopCalc.iptnu >= 0 && 
                opac.TauAbsGeo[0][StopCalc.iptnu-1] >= StopCalc.tauend/EPS )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "optical depth reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( colden.colden[ipCOL_HTOT] >= StopCalc.HColStop/EPS )
        {
                /* StopCalc.HColStop default set to COLUMN_INIT == 1e30 */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "H column dens reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( colden.colden[ipCOL_Hp] >= StopCalc.colpls/EPS )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "H+ column dens reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( (colden.colden[ipCOL_H2g]+colden.colden[ipCOL_H2s]) >= StopCalc.col_h2/EPS )
        {
                /* >>chng 03 apr 15, add molecular hydrogen */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "H2 column dens reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( (2.*(colden.colden[ipCOL_H2g]+colden.colden[ipCOL_H2s]) + colden.colden[ipCOL_H0]) >= StopCalc.col_h2_nut/EPS )
        {
                /* >>chng 04 feb 10, stopping command for H2 + H I */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "H2+H0 column dens reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( colden.H0_ov_Tspin >= StopCalc.col_H0_ov_Tspin/EPS )
        {
                /* >>chng 05 jan 09, stopping command for N(H0) / Tspin */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "N(H0)/Tspin column dens reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( findspecies("CO")->hevcol >= StopCalc.col_monoxco/EPS )
        {
                /* >>chng 03 oct 27--Nick Abel, add carbon monoxide */
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "CO column dens reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( colden.colden[ipCOL_H0] >= StopCalc.colnut/EPS )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "H0 column dens reached.", sizeof(StopCalc.chReasonStop) );
        }

        /* >>chng 99 jul 7, when no h2 molecules, include h2 as neutral atomic hydrogen,
         * hmi.lgNoH2Mole is set false in zero, true with command no hydrogen molecules */
        else if( hmi.lgNoH2Mole &&
                ( (colden.colden[ipCOL_H0]+2.*(colden.colden[ipCOL_H2g]+colden.colden[ipCOL_H2s])) >= StopCalc.colnut/EPS)  )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "H0-H0+H2 column dens reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( phycon.te > StopCalc.T2High )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "highest Te reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( phycon.te < StopCalc.tend )
        {
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "lowest Te reached.", sizeof(StopCalc.chReasonStop) );
        }

        else if( nzone >= geometry.nend[iteration-1] )
        {
                lgDone = true;
                geometry.lgZoneTrp = true;
                strncpy( StopCalc.chReasonStop, "NZONE reached.", sizeof(StopCalc.chReasonStop) );
        }

        /* option to stop calculation when line intensity ratio reaches certain value,
         * nstpl is number of stop line commands entered */
        else if( StopCalc.nstpl > 0 )
        {
                /* line ratio exceeded maximum permitted value
                 * do not consider case where norm line has zero intensity */
                for( i=0; i < StopCalc.nstpl; i++ )
                {
                        /* the second line is always set to something, default is H beta */
                        if( LineSv[StopCalc.ipStopLin2[i]].sumlin[LineSave.lgLineEmergent] > 0. )
                        {
                                char chString[10];
                                if( LineSv[StopCalc.ipStopLin1[i]].sumlin[LineSave.lgLineEmergent]/
                                        LineSv[StopCalc.ipStopLin2[i]].sumlin[LineSave.lgLineEmergent] > StopCalc.stpint[i] )
                                {
                                        lgDone = true;
                                        sprt_wl( chString , StopCalc.StopLineWl1[i] );
                                        sprintf( StopCalc.chReasonStop, "line %s %s reached", 
                                                StopCalc.chStopLabel1[i] , chString );
                                }
                        }
                }
        }

        else if( radius.drNext <= 0. )
        {
                /* this cant happen */
                if( called.lgTalk )
                {
                        fprintf( ioQQQ, " drNext=%10.2e STOP\n", radius.drNext );
                }
                lgDone = true;
                conv.lgBadStop = true;
                strncpy( StopCalc.chReasonStop, "internal error - DRAD.", sizeof(StopCalc.chReasonStop) );
                ShowMe();
        }

        else if( lgAbort )
        {
                /* calculation failed */
                conv.lgBadStop = true;
                lgDone = true;
                strncpy( StopCalc.chReasonStop, "calculation aborted.", sizeof(StopCalc.chReasonStop) );
        }

        lgPrinted = false;
        if( lgDone )
        {
                /* flag to call it quits */
                lgEndFun_v = true;
                PrtZone();
                lgPrinted = true;
        }

        else
        {
                /* passed all the tests, keep going */
                /* check whether this zone should be printed */
                if( ((nzone/geometry.nprint)*geometry.nprint == nzone || 
                  nzone == 1) || trace.nTrConvg )
                {
                        PrtZone();
                        lgPrinted = true;
                }
                /* flag to keep going */
                lgEndFun_v = false;
        }

        /* dump cooling arrays for this zone? */
        if( prt.nzdump == nzone || prt.nzdump == 0 )
                dmpary();

        /* do map of cooling function if desired, and not yet done */
        /* >>chng 02 may 29, MapZone < = to <= 0 - map 0 did not work */
        /* >>chng 04 jun 16, change to MapZone = 0 for map of first zone then quit,
         * -1 is not set, positive, do map of that zone */
        if( !hcmap.lgMapDone && (hcmap.MapZone == 0 || nzone == hcmap.MapZone) )
        {
                /* print last zone if not already done */
                if( !lgPrinted )
                {
                        PrtZone();
                }

                /* say that we are doing a map */
                hcmap.lgMapBeingDone = true;

                /* save old output file then redirect to map file */
                /* >>chng 01 mar 28, ioMAP may not be initialized, PvH */
                if( ioMAP != NULL )
                        map_do(ioMAP, " map");
                else
                        map_do(ioQQQ, " map");

                /* stop after doing map */
                lgEndFun_v = true;
                strncpy( StopCalc.chReasonStop, "MAP command used-stop.", sizeof(StopCalc.chReasonStop) );

                /* >>chng 03 jun 06, reset iterations since we want to stop even if
                 * iterate xx is specified, bug caught by Joop Schaye */
                iterations.itermx = 0;

                /* make really sure that the string contained in StopCalc.chReasonStop is properly terminated */
                StopCalc.chReasonStop[sizeof(StopCalc.chReasonStop)-1] = '\0';

                if( trace.lgTrace )
                {
                        fprintf( ioQQQ, " iter_end_check returns after map.\n" );
                }
                return( lgEndFun_v );
        }

        if( lgEndFun_v && prt.lgOnlyZone )
        {
                cdEXIT(EXIT_FAILURE);
        }

        /* the string contained in StopCalc.chReasonStop must be properly 
         * terminated -this can't fail - strlen returns the number of characters
         * in str, excluding the terminal NULL.*/
        if( strlen( StopCalc.chReasonStop ) >= nCHREASONSTOP-1 )
                TotalInsanity();

        if( trace.lgTrace )
        {
                fprintf( ioQQQ, " iter_end_check bottom return.\n" );
        }
        return( lgEndFun_v );
}

#ifdef EPS
#       undef EPS
#endif
#define EPS     0.005
/*dmpary print all coolants for some zone, as from print cooling command */
STATIC void dmpary(void)
{
        long int i;
        realnum ratio;

        DEBUG_ENTRY( "dmpary()" );

        fprintf( ioQQQ, 
                " This is a print out of the cooling array for zone number %3ld\n", 
          nzone );

        fprintf( ioQQQ, 
                " The total heating was HTOT=%10.2e erg/s/cm3, the total cooling was CTOT=%10.2e, and the temperature was%10.3eK.\n", 
          thermal.htot, thermal.ctot, phycon.te );

        fprintf( ioQQQ, 
                " All coolants greater than%6.2f%% of the total will be printed.\n", 
          EPS*100. );

        /* flag all significant coolants */
        coolpr(ioQQQ,"ZERO",1,0.,"ZERO");
        for( i=0; i < thermal.ncltot; i++ )
        {
                ratio = (realnum)(thermal.cooling[i]/thermal.ctot);
                if( fabs(ratio) > EPS )
                {
                        coolpr(ioQQQ,(char*)thermal.chClntLab[i],thermal.collam[i],
                          ratio,"DOIT");
                }

                ratio = (realnum)(thermal.heatnt[i]/thermal.ctot);
                if( fabs(ratio) > EPS )
                {
                        coolpr(ioQQQ,(char*)thermal.chClntLab[i],thermal.collam[i],
                          ratio,"DOIT");
                }
        }
        coolpr(ioQQQ,"DONE",1,0.,"DONE");
        return;
}

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