کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
647408 1457181 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical simulations of sodium mixing in a T-junction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Numerical simulations of sodium mixing in a T-junction
چکیده انگلیسی

Thermal fatigue is a major problem for liquid metal fast reactors due to the high temperature differences of the coolant in the circuits and because liquid metals efficiently transmit thermal fluctuations to walls. Detailed thermal hydraulic investigations have been carried out to quantify the amplitudes and frequencies of the temperature fluctuations in the secondary sodium circuit of the Phenix pool type fast reactor. Computational fluid dynamics calculations have been performed using either Reynolds Averaged Navier Stokes equations or Large Eddy Simulations. The characteristics of the mixing jet are well reproduced by the simulations and the high thermal fluctuation zones fit the thermal crack locations observed in the T-junction. Simulations with conjugate heat transfers, which allow inter- changing heat at the wall between fluid and solid, lead to noticeable heat transfers in the pipe wall and to high surface heat flux at fluid/solid interface.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 37, May 2012, Pages 38–43
نویسندگان
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