کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
522381 867824 2006 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a 2-D algorithm to simulate convection and phase transition efficiently
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Development of a 2-D algorithm to simulate convection and phase transition efficiently
چکیده انگلیسی

We develop a Jacobian-Free Newton–Krylov (JFNK) method for the solution of a two-dimensional convection phase change model using the incompressible Navier–Stokes equation set and enthalpy as the energy conservation variable. The SIMPLE algorithm acts as a physics-based preconditioner to JFNK. This combined algorithm is compared to solutions using SIMPLE as the main solver. Algorithm performance is assessed for two benchmark problems of phase change convection of a pure material, one melting and one freezing. The JFNK-SIMPLE method is shown to be more efficient per time step and more robust at larger time steps. Overall CPU savings of more than an order of magnitude are realized.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 219, Issue 1, 20 November 2006, Pages 404–417
نویسندگان
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