کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
522837 867873 2007 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A solution for the odd–even decoupling problem in pressure-correction algorithms for variable density flows
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A solution for the odd–even decoupling problem in pressure-correction algorithms for variable density flows
چکیده انگلیسی

When the Navier–Stokes equations are solved on a colocated mesh, a spurious mode for the pressure can appear if no special attention is paid to the discretization of the pressure. This pressure mode can be suppressed by a pressure-weighted interpolation formula for the mass flux over a cell-face. In this paper, a similar cure is presented in the framework of pressure-correction methods in variable density flow. Special attention is given to the solvability condition for the resulting Poisson-like equation for the pressure. It consists of two remedies: a correction term for the cell-face velocity is introduced and the stencil for the discrete Laplacian is compacted. We finally show the applicability of the method on general curvilinear coordinate systems in three dimensions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 227, Issue 1, 10 November 2007, Pages 79–99
نویسندگان
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