[mesa-users] Other_Energy and Mesh Refinement

[Bill Paxton]

Hi,

At each timestep, the remeshing happens before the call on the other_energy hook.
So there is no need to remesh the other-energy vector -- it is already for the current mesh.

It is of course up to the hook routine to recalculate the other energy vector at each timestep so that is it alway up to date.

Cheers,
Bill





On Mar 14, 2015, at 4:42 AM, Francis Timmes wrote:

> after the mesh planning stage, mesh adjustment is performed as described 
> in the 4th paragraph of section 6.4 in mesa I. no special mesh adjustment
> is done based solely on what may be in other_energy. one could also look 
> at the code starting from, say, $MESA_DIR/star/private/mesh_adjust.f90 to
> see exactly what is done.
> 
> fxt
> 
> 
> 
> 
>> On Mar 13, 2015, at 11:52 AM, Thaddeus Komacek <tkomacek at lpl.arizona.edu> wrote:
>> 
>> Hi all,
>> 
>> I just have a basic question about how Newton iterations are performed 
>> in MESA.
>> 
>> When mesh adjustment is necessary and extra_heat is being added to a 
>> region with the "other_energy" hook, how is the extra_heat remeshed? I 
>> am assuming that when cells are split there is either a linear 
>> interpolation done or the split cells simply inherit the original cell's 
>> value of extra_heat, as discussed in Section 6.5 of Paxton+ 11. Is one 
>> of the two options above being performed, or is some other algorithm used?
>> 
>> Thank you,
>> Tad
>> 
>> -- 
>> Thaddeus Komacek
>> Graduate Student
>> Lunar and Planetary Laboratory
>> University of Arizona
>> Office Phone: 520-626-3814
>> http://www.lpl.arizona.edu/~tkomacek/
>> --
>> 
>> 
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