کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
669628 1458801 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Probabilistic modeling of transient heat transfer and assessment of thermal reliability of fibrous insulation under aerodynamic heating conditions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Probabilistic modeling of transient heat transfer and assessment of thermal reliability of fibrous insulation under aerodynamic heating conditions
چکیده انگلیسی
In present paper, the probabilistic thermal analysis of the fibrous insulation subjected to aerodynamic heating conditions was performed to account for the uncertainties such as material properties, loading conditions and geometrical variations. The statistical analysis of thermal response showed that the response temperature was significantly dependent on time and location. Large variations in the statistics parameters were observed at the location where temperature slip occurred for the first one minute of entry. To identify the dominant variables which most influence temperature response scatter, the correlation coefficients of various variables were computed. The results showed that the aerodynamic heating temperature and initial temperature had significant effects for the considered locations. However, the extinction coefficient, the specific heat of virgin material and the solid fraction ratio had non-negligible effect on the back side temperature scatter of fibrous insulation. Furthermore, the relationship between the probabilistic thermal reliability and thickness factor of safety was developed. Quantitative as well as qualitative information is provided in the present methodology, which is valuable to the thermal analysis, design and testing of fibrous materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 48, Issue 7, July 2009, Pages 1302-1310
نویسندگان
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