کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661264 1458157 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Large-cell model of radiation heat transfer in multiphase flows typical for fuel–coolant interaction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Large-cell model of radiation heat transfer in multiphase flows typical for fuel–coolant interaction
چکیده انگلیسی

The visible and near-infrared radiative properties of water containing polydisperse steam bubbles and core melt particles are analyzed. The alternative approximate models of radiation heat transfer in the range of water semi-transparency are considered. A new approach based on radiation balance equations for a large computational cell of size about several centimeters is suggested. This approach called large-cell model takes into account not only water heating but also radiation heat transfer between the particles of different temperatures. The latter is important for problems of fuel–coolant interaction in possible severe accident of light water nuclear reactors. The model problems considered in the paper give estimates of nonlocal effects of thermal radiation and confirm the applicability of the large-cell model at parameters typical for fuel–coolant interaction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 50, Issues 17–18, August 2007, Pages 3401–3410
نویسندگان
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