کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
499819 863062 2007 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A divergence-free-condition compensated method for incompressible Navier–Stokes equations
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A divergence-free-condition compensated method for incompressible Navier–Stokes equations
چکیده انگلیسی

The present study aims to develop a new formulation to effectively calculate the incompressible Navier–Stokes solutions in non-staggered grids. The distinguished feature of the proposed method, which avoids directly solving the divergence-free equation, is to add a rigorously derived source term to the momentum equation to ensure satisfaction of the fluid incompressibility. For the sake of numerical accuracy, dispersion-relation-preserving upwind scheme developed within the two-dimensional context was employed to approximate the convection terms. The validity of the proposed mass-preserving Navier–Stokes method is justified by solving two benchmark problems at high Reynolds and Rayleigh numbers. Based on the simulated Navier–Stokes solutions, the proposed formulation is shown to outperform the conventional segregated method in terms of the reduction of CPU time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 196, Issues 45–48, 15 September 2007, Pages 4479–4494
نویسندگان
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