کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6874305 1441158 2018 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An improved entropy-consistent Euler flux in low Mach number
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
An improved entropy-consistent Euler flux in low Mach number
چکیده انگلیسی
The paper proposes a low-Mach number extension of entropy-consistent Euler flux, called EC-RoeM. The original EC-Roe flux suffers from accuracy deterioration in low Mach number. To overcome this defect, an enhancement is to rescale the left-moving and right-moving acoustic waves into the scaling of convective velocity through the Mach number function. This scaling function is restrained by a shock indicator and free from the cut-off reference Mach number. The resulting scheme is easily implemented and computational expense is negligible. In addition, it avoids global cut-off problem and preserves time consistency unlike preconditioning techniques. EC-RoeM improves low-speed accuracy and possesses numerical dissipation independent of Mach number. A series of inviscid and viscous flows demonstrate its attraction across wide-ranging applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Science - Volume 27, July 2018, Pages 271-283
نویسندگان
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