Changes between Version 10 and Version 11 of u/erica/scratch5


Ignore:
Timestamp:
04/12/16 14:37:01 (9 years ago)
Author:
Erica Kaminski
Comment:

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  • u/erica/scratch5

    v10 v11  
    5757[[Image(erad_hugedetdt.gif, 35%)]]
    5858
    59 Why do the wings leave the grid faster than the speed of light?
     59Why do the wings leave the grid faster than the speed of light (i.e. before even frame 1)?
    6060
    6161This has to do with the fact I am not 'limiting' the diffusion through the limiter, when I should be doing that. Instead, I am using a constant lambda, which I thought at the time might be appropriate. However, as this plot of R shows, that is not the case:
     
    8282== Run 2 ==
    8383
    84 Same de/dt, but now increasing lambda by factor of 10 (this decreases mean free path by 10x, and thus increases tdiff by 10x).
     84de/dt=7e+5
    8585
     86Here is Erad over time:
     87
     88[[Image(erad_smalldetdt.gif, 35%)]]
     89
     90In this case, it seems the time it takes to diffuse has changed? Hard to tell. Wouldn't expect that  to be, given the diffusion time doesn't depend on Estar.
     91
     92Here is R:
     93
     94[[Image(rlimiter_smalldetdt.png, 35%)]]
     95
     96
     97Here is a [attachment:rlimiter_smalldetdt.gif movie] of R_limiter.
     98
     99
     100Here is a movie of the temperatures over time:
     101
     102[[Image(temps_smalldedt.gif, 35%)]]
    86103
    87104== Run 3 ==
    88105
    89106Same de/dt but now with higher lambda
     107
     108
     109But now increasing lambda by factor of 10 (this decreases mean free path by 10x, and thus increases tdiff by 10x).
    90110
    91111== Run 4 ==