Changes between Version 10 and Version 11 of u/erica/scratch5
- Timestamp:
- 04/12/16 14:37:01 (9 years ago)
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u/erica/scratch5
v10 v11 57 57 [[Image(erad_hugedetdt.gif, 35%)]] 58 58 59 Why do the wings leave the grid faster than the speed of light ?59 Why do the wings leave the grid faster than the speed of light (i.e. before even frame 1)? 60 60 61 61 This 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: … … 82 82 == Run 2 == 83 83 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). 84 de/dt=7e+5 85 85 86 Here is Erad over time: 87 88 [[Image(erad_smalldetdt.gif, 35%)]] 89 90 In 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 92 Here is R: 93 94 [[Image(rlimiter_smalldetdt.png, 35%)]] 95 96 97 Here is a [attachment:rlimiter_smalldetdt.gif movie] of R_limiter. 98 99 100 Here is a movie of the temperatures over time: 101 102 [[Image(temps_smalldedt.gif, 35%)]] 86 103 87 104 == Run 3 == 88 105 89 106 Same de/dt but now with higher lambda 107 108 109 But now increasing lambda by factor of 10 (this decreases mean free path by 10x, and thus increases tdiff by 10x). 90 110 91 111 == Run 4 ==