کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4958708 | 1364831 | 2016 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Central-moment lattice Boltzmann schemes with fixed and moving immersed boundaries
ترجمه فارسی عنوان
طرح های بولتزمن با شبکه مرکزی لحظه ای با مرزهای ثابت و حرکتی غوطه ور شده است
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
علوم کامپیوتر (عمومی)
چکیده انگلیسی
Lattice Boltzmann (LB) schemes based on the relaxation of central moments have recently proved valuable in simulating flows with an improved stability with respect to the original single-relaxation-time BGK formulation, while preserving the accuracy of the latter. This has been assessed mainly for flows in simple geometries, e.g. in periodic domains or with fixed rigid straight boundaries. In the present study, the properties of central-moment LB schemes have been investigated against flow configurations involving arbitrarily-shaped, possibly moving, boundaries within the framework of the so-called immersed boundary (IB) method. Namely, the presence of boundaries is accounted by an external force acting on the fluid that is encompassed in the central-moment LB algorithm. Accuracy and stability issues are examined in comparison with existing results from the literature and LB simulations based on the original BGK scheme. Our results show that central-moment LB schemes accompanied by the IB method provide an efficient tool for fluid-structure interaction simulations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Mathematics with Applications - Volume 72, Issue 6, September 2016, Pages 1616-1628
Journal: Computers & Mathematics with Applications - Volume 72, Issue 6, September 2016, Pages 1616-1628
نویسندگان
Alessandro De Rosis, Emmanuel Lévêque,