[mesa-users] MESA test suite case - wd_ignite

[Max Katz]

Notice that in the terminal output you are showing, there are 10 timesteps
passing between the two terminal prints. Therefore it is not guaranteed
that the limit is not being applied. Set:

      terminal_cnt = 1

This will have information printed for every timestep to the terminal
window. If the difference in lg_Lnuc is now no longer larger than your
limit between consecutive timesteps, then there is no issue.

Max Katz
Ph.D. Candidate, Department of Physics and Astronomy
Vice President, Graduate Student Organization
Stony Brook University
http://astro.sunysb.edu/mkatz/

On Thu, Mar 26, 2015 at 12:01 AM, Héctor MR <HEM52 at pitt.edu> wrote:

>   Hi,
>
>   Thanks! Basically, this is the part of my inlist &controls section which
> deals with the problem:
>
>
>       report_why_dt_limits = .true.
>
>       delta_lgL_nuc_limit = 0.5
>
>       !delta_lgL_nuc_hard_limit = 0.5
>
>       min_timestep_factor = 0.8d0
>
>       power_nuc_burn_upper_limit = 1d15
>
>       max_timestep =  1972350000
>
>       varcontrol_target = 1d-3
>       mesh_delta_coeff = 0.5
>
>       logQ_limit = 1d6
>       gamma_center_limit = 1d6
>
>       photostep = 50
>       profile_interval = 50
>       history_interval = 10
>       terminal_cnt = 10
>       write_header_frequency = 10
>
>       min_timestep_limit = 1d-8 ! seconds
>
>       T_mix_limit = 1d4
>
>
>   And, eventually, my terminal output shows that the variation in lg_Lnuc
> is bigger than the limit I established before (0.5). I do not understand my
> misconception regarding the command delta_lgL_nuc_limit. Lnuc is giving me
> problems regarding the time step and this is why I want to limit it.
>
>   Thanks!
>
>
>
> __________________________________________________________________________________________________________________________________________________
>
>        step    lg_Tcntr    Teff       lg_LH     lg_Lnuc     Mass
> H_rich     H_cntr     N_cntr     Y_surf     X_avg     eta_cntr  zones retry
>    lg_dt_yr    lg_Dcntr    lg_R       lg_L3a    lg_Lneu     lg_Mdot
> He_core    He_cntr    O_cntr     Z_surf     Y_avg     gam_cntr  iters bckup
>      age_yr    lg_Pcntr    lg_L       lg_LZ     lg_Psurf    lg_Dsurf
> C_core     C_cntr     Ne_cntr    Si_cntr    Z_avg     v_div_cs     dt_limit
>
> __________________________________________________________________________________________________________________________________________________
>
>         480   8.486869  2.618E+05   2.859290   3.126873   1.382237
> 0.000000   0.000000   0.000206   0.000000   0.000000 214.803526   1919
> 1
>    1.795872   9.535192  -2.586528 -29.955105   2.519596  -7.000000
> 0.000000   0.000000   0.618844   1.000000   0.000000  23.766144      4
> 0
>  3.8224E+06  27.397920   1.452514   2.789604  10.804753  -2.247950
> 1.382237   0.354695   0.019368   0.000662  1.000E+00 -0.519E-12
> max_dt
>
>         490   8.521023  2.618E+05   3.635027   3.909948   1.382299
> 0.000000   0.000000   0.000279   0.000000   0.000000 198.563837   1898
> 1
>    1.795872   9.535305  -2.586601 -28.919191   3.114083  -7.000000
> 0.000000   0.000000   0.618800   1.000000   0.000000  21.980979      4
> 0
>  3.8230E+06  27.398142   1.452150   3.581138  10.804681  -2.247597
> 1.382299   0.353850   0.019502   0.000662  1.000E+00  0.693E-12
> max_dt
>
>
>
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