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Convection project update 05-05-2020: StarOnGrid
Clump
- Tried ideal gas gamma = 1.1 (wind speed 1e8, sound speed ~1.1e7)
- upper: table eos, lower: ideal gas with gamma = 1.1
- https://www.pas.rochester.edu/~yishengtu/research_files/CEE_gp_meeting_05042020/Template/out_combined/combined.gif
Convective instability
- stable if |dT/dP| < |dT/dP|_ad
- If blue line above red line, the star in convectively stable. Otherwise unstable
- https://www.pas.rochester.edu/~yishengtu/research_files/CEE_gp_meeting_05042020/StarOnGrid/convective_instability.png
- Notebook of math https://www.pas.rochester.edu/~yishengtu/research_files/CEE_gp_meeting_05042020/StarOnGrid/CEE_convection_notebook.pdf
StarOnGrid simulation
- A simulation with just a star sitting there (left: ideal gas, right: table eos)
- Radial velocity (v_r), red is radially outward and blue is inward https://www.pas.rochester.edu/~yishengtu/research_files/CEE_gp_meeting_05042020/StarOnGrid/combined_vr_figs/combined.gif
- There seems to an infall, leading to a wave propagating outward
- Slow motion of what happened between 0th and 1st frame https://www.pas.rochester.edu/~yishengtu/research_files/CEE_gp_meeting_05042020/StarOnGrid/ideal_slow_figs/movie.gif
- Maybe an change in resolution issue?
Future step
- email MESA (later this week or next week)
- check the resolution issue
- perhaps we are ready to run CE?
- Posted: 4 years ago (Updated: 4 years ago)
- Author: Yisheng
- Categories: (none)
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