Changes between Version 9 and Version 10 of u/erica/CoreCollapseBlog


Ignore:
Timestamp:
03/15/18 18:34:07 (7 years ago)
Author:
Erica Kaminski
Comment:

Legend:

Unmodified
Added
Removed
Modified
  • u/erica/CoreCollapseBlog

    v9 v10  
    1 === 3/15/18 ===
     1== 3/15/18 ==
    22
    33Have a working 2D solution on the grid — As shown in Figure 1, Astrobear attempts to interpolate between the progenitor density profile (red diamonds, Fig. 1) to arbitrary positions on the mesh (i.e. cell centers, blue curve). It then feeds these density values into the HSE numerical integrator and populates the zones with a pressure profile in HSE, working its way from the ambient boundary in (Fig. 2). The values of the ambient medium are just the constant progenitor profiles beyond a radius containing 3 solar masses ($r=7.26 e+9 ~cm$).
     
    2727
    2828
    29 '''3/5/18'''
     29== 3/5/18 ==
    3030
    3131The HSE module takes as input:
     
    3636
    3737
    38 === 2/26/18 ===
     38== 2/26/18 ==
    3939
    4040The Lane Emden equation non-dimensionalizes the HSE equation in an attempt to find analytic solutions. However, analytic solutions only exist for certain values of the polytropic index. Thus, if we are looking for numerical solutions, we can instead just start with the equation of HSE in spherical coordinates and discretize it:
     
    5151
    5252
    53 === 2/7/18 ===
     53== 2/7/18 ==
    5454
    5555Fryer sent progenitor data. The density, pressure, temperature, and velocity profiles of this progenitor look like:
     
    8080
    8181
    82 === 2/5/18 ===
     82== 2/5/18 ==
    8383
    8484We would like to model the progenitor of a core collapse supernova in astrobear. The project will be a parameter study to explore the role of magnetic fields and turbulent perturbations on the collapsing core.