کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661208 1458127 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal diffusivity estimation using numerical inverse solution for 1D heat conduction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Thermal diffusivity estimation using numerical inverse solution for 1D heat conduction
چکیده انگلیسی

This work presents an improved apparatus and a numerical approach to obtain the estimate of thermal diffusivity of complex materials. Transient thermal response at the axis of cylindrical sample is measured when boundary temperature is suddenly changed. Instead of assuming an ideal step temperature excitement, a measured temperature of a material boundary was employed. An iterative procedure, based on minimizing a sum of squares function with the Levenberg–Marquardt method, is used to solve the inverse problem. A graphical user interface is built to enable easy use of the inverse thermal diffusivity estimation method. The reference materials used to evaluate the method are Agar water gel, glycerol and Ottawa quartz sand.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 52, Issues 25–26, December 2009, Pages 5675–5681
نویسندگان
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