کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
657215 1458059 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three dimensional radiative heat transfer model for the evaluation of the anisotropic effective conductivity of fibrous materials
ترجمه فارسی عنوان
مدل سه بعدی انتقال گرما تابشی برای ارزیابی هدایت مؤثر آنیوسوتروپیک مواد فیبری
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی

The effective radiative conductivity of fibrous material is an important part of the evaluation of the thermal performance of fibrous insulators. To better evaluate this material property, a three-dimensional direct simulation model which calculates the effective radiative conductivity of fibrous material is proposed. The simplified model assumes that the fibers are in a cylindrical shape and does not require identically-sized fibers or a symmetric configuration. Using a geometry with properties resembling those of a fibrous insulator, a numerical calculation of the geometric configuration factor is carried out. The results show the dependency of thermal conductivity on temperature as well as the orientation of the fibers. The calculated conductivity values are also used in the continuum heat equation, and the results are compared to the ones obtained using the direct simulation approach, showing a good agreement.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 83, April 2015, Pages 629–635
نویسندگان
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