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peter (2 matches)

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#23 model of hydrogen deficient nebula crashes due to convergence problems in eden solver ionization convergence defect - convergence 2007-04-04

The attached sim crashes on the mainline due to convergence problems in the eden solver in the molecular region. The remarkable thing is that choosing either a lower or higher carbon abundance makes the problem go away, so it requires some fine tuning... running the sim yields:

cloudy.exe < cloudy.inp
   ....<snip> ...
 PROBLEM  ConvFail 1, eden not converged itr 2 zone 915 fnzone 915.71 correct=6.722e+00 assumed=1.095e+01.  Electron density oscillating.  Heating-cooling oscillating.
 PROBLEM  ConvFail 2, eden not converged itr 2 zone 916 fnzone 919.14 correct=7.015e+00 assumed=8.874e+00.  Heating-cooling oscillating.
 PROBLEM  ConvFail 3, eden not converged itr 2 zone 917 fnzone 917.73 correct=6.647e+00 assumed=1.460e+01.  Electron density oscillating.  Heating-cooling oscillating.
 PROBLEM  ConvFail 4, eden not converged itr 2 zone 918 fnzone 920.61 correct=1.932e+01 assumed=1.351e+01.  Heating-cooling oscillating.
 PROBLEM  ConvFail 5, eden not converged itr 2 zone 919 fnzone 919.55 correct=2.354e+01 assumed=8.156e+00.  Electron density oscillating.  Heating-cooling oscillating.
 PROBLEM  ConvFail 6, eden not converged itr 2 zone 920 fnzone 920.63 correct=6.710e+00 assumed=1.201e+01.  Electron density oscillating.  Heating-cooling oscillating.
 PROBLEM  ConvFail 7, eden not converged itr 2 zone 921 fnzone 921.51 correct=2.162e+01 assumed=1.057e+01.  Electron density oscillating.  Heating-cooling oscillating.
 PROBLEM  ConvFail 8, eden not converged itr 2 zone 922 fnzone 924.48 correct=6.803e+00 assumed=9.727e+00.  Heating-cooling oscillating.
 PROBLEM  ConvFail 9, eden not converged itr 2 zone 923 fnzone 925.41 correct=2.004e+01 assumed=1.257e+01.  Heating-cooling oscillating.
 PROBLEM  ConvFail 10, eden not converged itr 2 zone 924 fnzone 927.56 correct=2.320e+01 assumed=8.566e+00.  Electron density oscillating.  Heating-cooling oscillating.
 PROBLEM  ConvFail 11, eden not converged itr 2 zone 925 fnzone 925.66 correct=6.806e+00 assumed=1.198e+01.  Electron density oscillating.  Heating-cooling oscillating.

 DISASTER PROBLEM radius_next finds dr too small and aborts.  This is zone 925 iteration 2

 ####925  Te:1.169E+02 Hden:3.162E+03 Ne:1.198E+01 R:3.122E+15 R-R0:1.693E+15 dR:7.617E+01 NTR: 67 Htot:7.854E-18 T912: 1.42e+04###
 Hydrogen      7.82e-03 1.25e-12 H+o/Hden 7.82e-03 2.48e-14 H-    H2 4.96e-01 3.33e-14 H2+ HeH+ 4.08e-18 Ho+ ColD 3.08e+18 3.85e+17
 Helium        1.00e+00 1.35e-12 0.00e+00 He I2SP3 9.17e-19 Comp H,C 2.38e-25 5.50e-26 Fill Fac 1.00e+00 Gam1/tot 5.63e-05
 He singlet n  1.00e+00 6.93e-25 1.26e-29 7.81e-32 3.81e-31 1.86e-31 He tripl 9.17e-19 1.11e-28 1.49e-31 1.54e-30 5.11e-31
 Pressure      NgasTgas 1.24e+08 P(total) 1.71e-08 P( gas ) 1.71e-08 P(Radtn) 2.73e-12 Rad accl 4.26e-05 ForceMul 2.05e+07
               Texc(La) 2.11e+03 T(contn) 2.93e+01 T(diffs) 1.39e+02 nT (c+d) 4.07e+07 Prad/Gas 1.60e-04 Pmag/Gas 0.00e+00
 gra-ism01     DustTemp 1.71e+02 Pot Volt 7.66e-03 Chrg (e)-9.68e-01 drf cm/s 1.02e+04 Heating: 3.83e-21 Frac tot 4.88e-04
 gra-ism02     DustTemp 1.71e+02 Pot Volt 4.30e-03 Chrg (e)-9.74e-01 drf cm/s 1.50e+04 Heating: 3.46e-21 Frac tot 4.41e-04
 gra-ism03     DustTemp 1.71e+02 Pot Volt 2.27e-03 Chrg (e)-9.80e-01 drf cm/s 2.22e+04 Heating: 3.19e-21 Frac tot 4.06e-04
 gra-ism04     DustTemp 1.72e+02 Pot Volt 5.08e-04 Chrg (e)-9.93e-01 drf cm/s 3.29e+04 Heating: 3.04e-21 Frac tot 3.87e-04
 gra-ism05     DustTemp 1.72e+02 Pot Volt-2.85e-02 Chrg (e)-1.56e+00 drf cm/s 4.87e+04 Heating: 2.93e-21 Frac tot 3.73e-04
 gra-ism06     DustTemp 1.73e+02 Pot Volt-3.11e-02 Chrg (e)-1.91e+00 drf cm/s 7.23e+04 Heating: 2.30e-21 Frac tot 2.93e-04
 gra-ism07     DustTemp 1.75e+02 Pot Volt-3.77e-02 Chrg (e)-2.62e+00 drf cm/s 1.08e+05 Heating: 1.63e-21 Frac tot 2.08e-04
 gra-ism08     DustTemp 1.80e+02 Pot Volt-4.02e-02 Chrg (e)-3.56e+00 drf cm/s 1.65e+05 Heating: 1.07e-21 Frac tot 1.36e-04
 gra-ism09     DustTemp 1.88e+02 Pot Volt-4.14e-02 Chrg (e)-4.90e+00 drf cm/s 2.59e+05 Heating: 6.83e-22 Frac tot 8.69e-05
 gra-ism10     DustTemp 1.98e+02 Pot Volt-4.25e-02 Chrg (e)-6.92e+00 drf cm/s 4.23e+05 Heating: 4.44e-22 Frac tot 5.65e-05
 Molecules     CH/Ctot: 9.79e-10 CH+/Ctot 4.93e-15 CO/Ctot: 3.16e-02 CO+/Ctot 1.66e-13 H2O/Otot 1.88e-17 OH/Ototl 1.02e-18
 Lithium       9.98e-01 1.95e-03 0.00e+00 0.00e+00 Berylliu 1.00e-00 5.98e-05 0.00e+00 0.00e+00 0.00e+00 sec ion: 2.03e-17
 Boron         9.94e-01 5.97e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Carbon        9.66e-01 3.97e-08 9.82e-16 0.00e+00 0.00e+00 0.00e+00 0.00e+00 H2O+/O   9.18e-21 OH+/Otot 1.62e-18 Hex(tot) 0.00e+00
 Nitrogen      8.24e-03 5.82e-11 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 O2/Ototl 1.98e-24 O2+/Otot 1.21e-25
 Oxygen        4.11e-07 1.85e-16 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Fluorine      1.00e+00 1.33e-09 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Neon          1.00e+00 1.37e-09 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Sodium        1.00e-00 1.23e-04 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Magnesium     9.77e-01 2.31e-02 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Aluminium  0  9.52e-01 4.81e-02 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Silicon    0  9.91e-01 8.63e-03 2.25e-12 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Phosphorus 0  1.00e-00 1.31e-06 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Sulphur    0  6.08e-02 1.54e-06 4.15e-14 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Chlorine   0  1.00e-00 1.53e-11 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Argon      0  1.00e+00 1.93e-09 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Potassium  0  9.98e-01 1.80e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Calcium    0  9.93e-01 7.20e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Scandium   0  9.91e-01 9.01e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Titanium   0  1.00e-00 1.93e-04 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Vanadium   0  9.99e-01 5.20e-04 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Chromium   0  9.96e-01 4.09e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Manganese  0  9.98e-01 2.01e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Iron       0  9.69e-01 3.11e-02 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Cobalt     0  9.97e-01 2.80e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Nickel     0  9.94e-01 5.67e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Copper     0  9.98e-01 1.60e-03 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
 Zinc       0  1.00e-00 6.04e-05 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00
  .... etc ....

#80 FPE in grains grains defect - FPE 2008-11-10

The following sim causes an FPE in source:trunk/source/grains.cpp. It happens at different places depending upon whether NDEBUG is set. If so, the failure is at line source:trunk/source/grains.cpp@2452#L3103, otherwise it is at source:trunk/source/grains.cpp@2452#L3123. In both cases the failure is division by zero.

blackbody 200 STE
Hden 2.0     
stop zone 1
sphere                                
Abundances H II region no qheat no grains  
grains PAH 10   
grains orion 1
no grain qheat       
element Helium abundance -0.98  
element Carbon abundance -4.14 
element Nitrogen abundance -4.2  
element Oxygen abundance -3.47  
element Neon abundance -4.4     
element Sulphur abundance -5.06  
element Chlorine abundance -6.88   
element Argon abundance -5.64  
element Iron abundance  -5.5   
element Boron off                 
element Beryllium off    
element Scandium off            
element Vanadium off           
element Copper off         
element Cobalt off  
element Nickel off    
element Zinc off   
element Manganese off  
element Titanium off 
turbulence 3km/s 2

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