کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7058562 1458077 2013 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Energy conservative dissipative particle dynamics simulation of natural convection in eccentric annulus
ترجمه فارسی عنوان
شبیه سازی انرژی پراکنده ذرات تجزیه کننده انرژی از انتقال طبیعی در حلقه بیرونی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In this paper, an efficient numerical approach, the dissipative particle dynamics with energy conservation (eDPD), is used to simulate natural convection in eccentric annulus over a wide range of Rayleigh numbers. A numerical strategy is presented for dealing with irregular geometries in DPD system. The eDPD results are compared to the finite volume solutions and the experimental data, and it is found that the temperature and flow fields for the natural convection in complex geometries are correctly predicted using eDPD. The effect of eccentricity on heat transfer at various locations is examined at Ra = 104, and the streamlines and temperature distributions as well as Nusselt number are obtained. The results show that the average Nusselt number increases when the inner cylinder moves downward regardless of the radial position.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 65, October 2013, Pages 409-422
نویسندگان
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