Search found 17 matches

by khajezade
Thu Jan 24, 2019 10:51 pm
Forum: phase-field model
Topic: general Phase field equation for multi-obstacle potential
Replies: 4
Views: 2144

Re: general Phase field equation for multi-obstacle potential

Hi Janin; Thanks for the explanation. I am writing the code from scratch for different phase-field models for grain growth and texture predictions. For my Ph.D. project, we are thinking to scale up our simulation domains (around a million grains). I asked you before about feasibility of doing these ...
by khajezade
Mon Jan 21, 2019 7:59 pm
Forum: phase-field model
Topic: general Phase field equation for multi-obstacle potential
Replies: 4
Views: 2144

Re: general Phase field equation for multi-obstacle potential

Hi Janin; Thanks for your explanation. I have three more questions regarding these equations. 1) In these relationships, Is M_{\alpha \beta }^{\phi } the physical interface mobility? Is it equal to the user's input or it is modified in this relationship? 2) What does \nu mean in term of physical int...
by khajezade
Mon Jan 21, 2019 3:19 am
Forum: phase-field model
Topic: general Phase field equation for multi-obstacle potential
Replies: 4
Views: 2144

general Phase field equation for multi-obstacle potential

Hi there; If I want to use the multi-phase-field model with the multi-obstacle potential option, what will be the final form of phase evolution? Is it the eq. 25 in the following paper? "Multiphase-Field approach for multicomponent alloys with extrapolation scheme for numerical application" in Phys....
by khajezade
Tue May 15, 2018 7:54 pm
Forum: phase-field model
Topic: FD correction
Replies: 3
Views: 1725

Re: FD correction

Hi Deepu, Thanks for the reply. Yes, I have already studied these papers. I think the first paper is the general guideline of how you have got the phase field equation and also extrapolation scheme to use external thermodynamical databases. However, I couldn't find anything regarding FD-correction (...
by khajezade
Tue May 15, 2018 3:08 am
Forum: phase-field model
Topic: FD correction
Replies: 3
Views: 1725

FD correction

Hi there;

I was wondering how do you extend your FD-correction formulism to multicomponent systems with non-conserved phase parameter? Any paper that I can refer to?

Thanks,

Ali
by khajezade
Tue May 01, 2018 12:36 am
Forum: recrystallisation/grain growth
Topic: interface mobility and energy
Replies: 1
Views: 1392

interface mobility and energy

Hi there, I am doing simulation on anisotropic grain growth where I use misorientation to describe interface mobility and surface energy. For now it is 2D and everything is fine. I want to go toward the 3D simulations but I just want to estimate the amount of physical memory that I need for the 3D s...
by khajezade
Thu Dec 14, 2017 1:13 am
Forum: phase-field model
Topic: finite difference formulas
Replies: 9
Views: 2871

Re: finite difference formulas

Dear Bernd;

I forgot to ask you a question in the previous reply. For now, I choose fixed time increment for the simulations. Is it modified based on your multi-level criterion during the course of grain growth simulation?

Thanks,

Ali
by khajezade
Thu Dec 14, 2017 12:06 am
Forum: phase-field model
Topic: finite difference formulas
Replies: 9
Views: 2871

Re: finite difference formulas

Dear Bernd; Thanks for your kind reply. Just to verify my understanding, MICRESS solves phase field equation grain by grain and it doesn't solve phase field equation on whole domain. Right? Another question, To solve phase field equation using finite difference when you want to calculate the spatial...
by khajezade
Fri Dec 08, 2017 10:15 pm
Forum: phase-field model
Topic: finite difference formulas
Replies: 9
Views: 2871

Re: finite difference formulas

Dear Bernd, Thanks for the comprehensive explanation. Actually, I need to do anisotropic grain growth and I really do not need to couple TQ or any diffusion with my calculation for now. However, I need fine grid size on a large domain as I have many grains with relatively small size in the microstru...
by khajezade
Thu Dec 07, 2017 7:25 pm
Forum: phase-field model
Topic: finite difference formulas
Replies: 9
Views: 2871

Re: finite difference formulas

Hi Bernd, Thanks for your quick reply. Does it mean that if I want to do a simulation on a bigger domain or if I want to decrease the grid size to very small sizes, then I will have severe stability condition? Is there any implicit version of MICRESS? Because I think it will be more computationally ...