کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4921196 1429340 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
DEM-CFD simulation of purge gas flow in a solid breeder pebble bed
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
DEM-CFD simulation of purge gas flow in a solid breeder pebble bed
چکیده انگلیسی
Solid tritium breeding blanket applying pebble bed concept is promising for fusion reactors. Tritium bred in the pebble bed is purged out by inert gas. The flow characteristics of the purge gas are important for the tritium transport from the solid breeder materials. In this study, a randomly packed pebble bed was generated by Discrete Element Method (DEM) and verified by radial porosity distribution. The flow parameters of the purge gas in channels were solved by Computational Fluid Dynamics (CFD) method. The results show that the normalized velocity magnitudes have the same damped oscillating patterns with radial porosity distribution. Besides, the bypass flow near the wall cannot be ignored in this model, and it has a slight increase with inlet velocity. Furthermore, higher purging efficiency becomes with higher inlet velocity and especially higher in near wall region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 113, December 2016, Pages 288-292
نویسندگان
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