مجله مدل‌سازی پیشرفته ریاضی

مجله مدل‌سازی پیشرفته ریاضی

Analytical and numerical study of a class of nonlinear parabolic moving boundary problems

نوع مقاله : مقاله پژوهشی

نویسندگان
School of Mathematics and Computer Science, Iran University of Science and Technology, Tehran, IRAN
چکیده
The main contribution of this article is the investigation of a parabolic
problem with the moving boundary and nonlinear boundary conditions. Because of the non-linearity of the problem, it is important to put a lot of effort into providing efficient numerical schemes. For this purpose, a numerical approach based on the finite difference method with variable time steps is developed. First, based on the front-fixing approach, the problem is derived as a nonlinear fixed domain parabolic problem, and the uniqueness of the solution of the problem is proved. In sequence, a variable time step finite differencemethod is established to find the solution of the fixed domain problem. Finally, some numerical results are presented for two test problems to prove the ability and strength of the numerical method
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Analytical and numerical study of a class of nonlinear parabolic moving boundary problems

نویسندگان English

Morteza Garshasbi
Kulthom Yaseen
چکیده English

The main contribution of this article is the investigation of a parabolic problem with the moving boundary and nonlinear boundary conditions. Because of the non-linearity of the problem, it is important to put a lot of effort into providing efficient numerical schemes. For this purpose, a numerical approach based on the finite difference method with variable time steps is developed. First, based on the front-fixing approach, the problem is derived as a nonlinear fixed domain parabolic problem, and the uniqueness of the solution of the problem is proved. In sequence, a variable time step finite difference method is established to find the solution of the fixed domain problem. Finally, some numerical results are presented for two test problems to prove the ability and strength
of the numerical method

کلیدواژه‌ها English

Moving boundary problem
Nonlinear parabolic equations
Variable time step
Finite difference method
Uniqueness

  • تاریخ دریافت 05 اردیبهشت 1404
  • تاریخ بازنگری 28 مرداد 1404
  • تاریخ پذیرش 27 خرداد 1405