| 51 | | The code failed to run past frame zero. |
| | 51 | I calculated the diffusion time assuming the scale-height was = box radius (which also equals the mean free path). Because of this, I thought I was in the optically thick limit everywhere in my box, so chose the flux limiter to be constant... =1/3 in the data file. From this, I calculate the diffusion time to be 24 days. Is this a good estimate? |
| | 52 | |
| | 53 | Why do the wings leave the grid faster than the speed of light? |
| | 54 | |
| | 55 | This has to do with the fact I am not 'limiting' the diffusion through the limiter, when I should be doing that. Show plots of R. |
| | 56 | |
| | 57 | However, the scale height is not the same as the mean free path in actuality, and so it is curious then what it means to calculate a diffusion time in the FLD approximation. |
| | 58 | |
| | 59 | If my entire box was optically thick, I would expect the t_diff=24 days. But since it is not, the wave should diffuse through some parts |
| | 60 | |
| | 61 | Now knowing that my signal is propagating through my medium at an unphysical speed, |
| | 62 | |
| | 63 | == Run 2 == |
| | 64 | |
| | 65 | Same de/dt, but now increasing lambda by factor of 10 (this decreases mean free path by 10x, and thus increases tdiff by 10x). |
