کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10357142 867850 2009 30 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A transformation-free HOC scheme for incompressible viscous flows past an impulsively started circular cylinder
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A transformation-free HOC scheme for incompressible viscous flows past an impulsively started circular cylinder
چکیده انگلیسی
In this paper, we present a higher order compact scheme for the unsteady two-dimensional (2D) Navier-Stokes equations on nonuniform polar grids specifically designed for the incompressible viscous flows past a circular cylinder. The scheme is second order accurate in time and at least third order accurate in space. The scheme very efficiently computes both unsteady and time-marching steady-state flow for a wide range of Reynolds numbers (Re) ranging from 10 to 9500 for the impulsively started cylinder. The robustness of the scheme is highlighted when it accurately captures the vortex shedding for moderate Re represented by the von Kármán street and the so called α and β-phenomena for higher Re. Comparisons are made with established numerical and experimental results and excellent agreement is found in all the cases, both qualitatively and quantitatively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 228, Issue 14, 1 August 2009, Pages 5207-5236
نویسندگان
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