[mesa-users] Prevention convergent problem on helium flash

[熊赫然]

Hello every one MESA users:
     I want to know how does MESA handle the convergent problem on He flash process. I had used other star evolution code and it stops on He flash, because the extreme increasing in Helium burning energy leads to a convergent problem: The finite-difference method is not convergent here, and Taylor's series expansion is not applicable to this kind of extreme change.  So i want to know which kind of numerical solution using in MESA that can prevent this convergent problem?
--

Heran XIONG
Yunnan Observatories, Academia Sinica 
Phoenix Mountain, East Suburb 
Kunming, 650011 
P.R. China 


Tel. +86-0871-67381984 (Office)      
     +86-18501150931 (Mobile)
Fax: +86-871-63920599 
E-mail: xiongheran at ynao.ac.cn 


                                                                                                                                                         Sincerely, 
                                                                                                                                                         Heran, Xiong


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