[mesa-users] He-flash problem

[Josiah Schwab]

Hi Jakub,

The 1Msun movie that I made on the MESA main page was produced with r3723.  Since we're nearly 1000(!) revisions later, perhaps it's not surprising that things have changed a bit.  In the 4400s (April), I believe Bill increased the default spatial resolution, which would seems like a prime candidate for the increased number of steps to He flash that you observe.

Josiah

On Dec 14, 2012, at 6:39 AM, Jakub Ostrowski wrote:

> Hi!
> 
> Ehsan, thank you for your advice, being patient solved the problem. I got helium flash around model 18000 (~3 hours of calculations) but I'm a little bit surprised that it was so late.
> 
> Cheers,
> Jakub
> 
> On 13 gru 2012, at 15:29, Ehsan Moravveji <moravveji at iasbs.ac.ir> wrote:
> 
>> Hello Jakub,
>> As a first attempt, try to be more patient, and let the model number pass
>> nearly 14,000. In my case, I have it around there.
>> 
>> Let us know how it goes.
>> Ehsan.
>> 
>>> Hi!
>>> 
>>> I'm a new user of MESA and I'm currently trying to learn how to use the
>>> code. It's totally awesome :) However I found a problem with helium flash.
>>> I try to calculate evolution of 1.0 M_S star and it doesn't want to start
>>> helium burning.
>>> 
>>> I tried many inlists with different parameters but nothing helps. I'm
>>> especially bothered because even the unmodified be me inlist from test
>>> '1M_pre_ms_to_wd' doesn't work. I calculated up to 10500 models and then
>>> forced stop. In awesome video '1M summary', which is available on the main
>>> page of MESA, there is a helium flash around model 4500.
>>> 
>>> I don't have problem with helium burning in massive models without
>>> He-flash. I tested eg. 7 or 20 solar masses.
>>> 
>>> I use OS X 10.8.2, MESA 4631 and the latest version of SDK. Because I'm
>>> really a beginning user I don't know which other information I should
>>> provide you in order to solve this problem.
>>> 
>>> I would be grateful for any kind of help.
>>> 
>>> Cheers,
>>> Jakub
>>> 
>>> PS. Is it possible to use with PGSTAR the same format of output during
>>> calculations of evolution like in the mentioned video? I think it has
>>> perfect size and optimal set of parameters just to follow what the code is
>>> doing.
>>> --
>>> This message has been scanned for viruses and
>>> dangerous content by MailScanner, and is
>>> believed to be clean.
>>> 
>>> ------------------------------------------------------------------------------
>>> LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial
>>> Remotely access PCs and mobile devices and provide instant support
>>> Improve your efficiency, and focus on delivering more value-add services
>>> Discover what IT Professionals Know. Rescue delivers
>>> http://p.sf.net/sfu/logmein_12329d2d_______________________________________________
>>> mesa-users mailing list
>>> mesa-users at lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/mesa-users
>>> 
>> 
>> 
>> 
>> -- 
>> This message has been scanned for viruses and
>> dangerous content by MailScanner, and is
>> believed to be clean.
>> 
> 
> 
> ------------------------------------------------------------------------------
> LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial
> Remotely access PCs and mobile devices and provide instant support
> Improve your efficiency, and focus on delivering more value-add services
> Discover what IT Professionals Know. Rescue delivers
> http://p.sf.net/sfu/logmein_12329d2d
> _______________________________________________
> mesa-users mailing list
> mesa-users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/mesa-users