کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8067607 1521103 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of friction on pebble flow pattern in pebble bed reactor
ترجمه فارسی عنوان
اثر اصطکاک بر روی الگوی جریان جابجایی در راکتور پخت رطوبتی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Friction affects pebble flow pattern in pebble-bed high temperature gas-cooled reactor (HTGR) significantly. Through a series of three dimensional DEM (discrete element method) simulations it is shown that reducing friction can be beneficial and create a uniform and consistent flow field required by nuclear engineering. Particle-wall friction poses a decisive impact on flow pattern, and particle-particle friction usually plays a secondary role; relation between particle-wall friction and flow pattern transition is also concluded. Moreover, new criteria are created to describe flow patterns quantitatively according to crucial issues in HTGR like stagnant zone, radial uniformity and flow sequence. Last but not least, it is proved that friction control of hopper part is more important than that of cylinder part in practical pebble beds, so reducing friction between pebbles and hopper surface is the engineering priority.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 94, August 2016, Pages 32-43
نویسندگان
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