کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1799141 1524836 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Control of wake and vortex shedding behind a porous circular obstacle by exerting an external magnetic field
ترجمه فارسی عنوان
کنترل زلزله و گرداب در پشت یک مانع دیوانه متخلخل با اعمال یک میدان مغناطیسی خارجی
کلمات کلیدی
ریختن وورث، بدن متخلخل، میدان مغناطیسی، روش حجم محدود شماره استوارت
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی


• The formation and shedding of wakes behind a porous bluff-body are investigated.
• Effects of a magnetic field on controlling the wake formation is explored.
• Roles of Darcy, Reynolds and Stuart numbers on the flow behavior are analyzed.
• Flow patterns change with Reynolds number and Darcy numbers.
• The critical Stuart number decreases with increased Darcy numbers.

In this article the finite volume method (FVM) is carried out to simulate the flow around and through a two-dimensional porous cylinder. An external magnetic field is used to control the wake behind the bluff body and also to suppress the vortex shedding phenomena. The Darcy–Brinkman–Forchheimer model has been used for modeling the flow in the porous medium. Effects of Stuart (N), Reynolds (Re) and Darcy (Da) numbers on the flow behavior have been investigated. The results show that the critical Stuart number for suppress vortex shedding decreases with increasing the Darcy numbers. Also, the Stuart number for disappearance the re-circulating wake increases with increased Reynolds number for both porous and solid cylinders.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 385, 1 July 2015, Pages 198–206
نویسندگان
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