[mesa-users] Mass-transfer in MESA

[Hannah Brinkman]

Thank you for your response. I will look into it.
With kind regards,
Hannah

2016-09-30 17:04 GMT+02:00 Anastasios Fragkos <Anastasios.Fragkos at unige.ch>:

> Dear Hannah,
>
> You need to look into the parameters below on the binary_controls:
> mass_transfer_* ¶
> <http://mesa.sourceforge.net/binary_controls_defaults.html#mass_transfer_>
>
> Transfer efficiency controls. alpha, beta, delta and gamma parameters as
> described in Tauris & van den Heuvel 2006 section 16.4.1, transfer
> efficiency is given by 1-alpha-beta-delta.
>
> These only affect mass that is lost from the donor due to mass transfer,
> winds from each star will carry away angular momentum from the vicinity of
> each even when transfer efficiency is unity. Each of these represent the
> following:
>
>    - alpha : fraction of mass lost from the vicinity of the donor as fast
>    wind
>    - beta : fraction of mass lost from the vicinity of the accretor as
>    fast wind
>    - delta : fraction of mass lost from circumbinary coplanar toroid
>    - gamma : radius of the circumbinary coplanar toroid is gamma**2 *
>    orbital_separation
>
> mass_transfer_alpha = 0.0d0mass_transfer_beta = 0.0d0mass_transfer_delta = 0.0d0mass_transfer_gamma = 0.0d0
>
>
> Cheers,
> Tassos
>
> On 30 Sep 2016, at 13:56, Hannah Brinkman <brinkmanhe at gmail.com> wrote:
>
> Dear all,
>
> for my master thesis, I am working with MESA to evolve binary systems.
> Currently, I am trying to change the mass-transfer between my stars from
> the non-conservative case to a conservative, or partially conservative
> case. By switching off the Eddington limit on the accretion, the
> mass-transfer becomes conservative. However, I'd like to be able to
> transfer a certain percentage of the mass from the primary star to the
> secondary star. Is this possible?
> I have attached my inlist-files just in case they might be needed. The
> ones attached give non-conservative mass-transfer.
> I hope someone can help me with this.
>
> With kind regards,
> Hannah
>
> <inlist><inlist1_spec><inlist2_spec><inlist_project>-
> ------------------------------------------------------------
> -----------------
> _______________________________________________
> mesa-users mailing list
> mesa-users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/mesa-users
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160930/63a3a19d/attachment.html>