[Mesa-users] Setting the value of omega/omega_critical

[Simon Murphy]

Hi Antonio,

you're setting rotation using the near_zams parameters. I think it's important to note that this is not the same as 'after the ZAMS'. I suspect the star is still contracting a little, which is why the rotation is still increasing after it is initially set.

To confirm (and for the benefit of future readers), please could you plot what's happening with (a) the stellar radius, and (b) the nuclear burning, alongside your rotation plot?

cheers,
- Simon
________________________________
From: Mesa-users <mesa-users-bounces at lists.mesastar.org> on behalf of AVG via Mesa-users <mesa-users at lists.mesastar.org>
Sent: 24 March 2022 04:34
To: mesa-users at lists.mesastar.org <mesa-users at lists.mesastar.org>
Subject: [Mesa-users] Setting the value of omega/omega_critical

Dear all,

I am trying to simulate a rotating star with a given value of its
omega/omega_critical, but I find that this parameter varies strongly in
the first 20 Myears of the simulation since the ZAMS starts (I am
specially interesed on what happens in those first 20 Myears after the
ZAMS, as the work I am doing is focused on some previous results
obtained until that time).

In my simulations I turn on the rotation at the begining of ZAMS, and
shortly after it starts the value of its omega changes quickly, as we
can see in the image I attach. I want to set the value of the omega
along the simulation, as I need to analyse results obtained with GYRE
for some specific omegas (so the increasing behaviour of the omega makes
it really difficult for me).

I also attach the inlist I have used.

Could someone give me some tips on this?  Any help will be appreciated.

Best regards,

Antonio Varo
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20220323/43cdeaef/attachment.htm>