کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6932205 867636 2015 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A priori mesh quality metrics for three-dimensional hybrid grids
ترجمه فارسی عنوان
معیارهای کیفیت پیشین برای شبکههای ترکیبی سه بعدی
کلمات کلیدی
شبیه سازی میدان، کیفیت شبکه، خطای تقسیم، اعوجاج شبکه شبکه ترکیبی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
Use of general hybrid grids to attain complex-geometry field simulations poses a challenge on estimation of their quality. Apart from the typical problems of non-uniformity and non-orthogonality, the change in element topology is an extra issue to address. The present work derives and evaluates an a priori mesh quality indicator for structured, unstructured, as well as hybrid grids consisting of hexahedra, prisms, tetrahedra, and pyramids. Emphasis is placed on deriving a direct relation between the quality measure and mesh distortion. The work is based on use of the Finite Volume discretization for evaluation of first order spatial derivatives. The analytic form of the truncation error is derived and applied to elementary types of mesh distortion including typical hybrid grid interfaces. The corresponding analytic expressions provide relations between the truncation error and the degree of stretching, skewness, shearing, torsion, expansion, as well as the type of grid interface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 280, 1 January 2015, Pages 465-488
نویسندگان
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