کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7054635 1458020 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of the apparent solid thermal conductivity of aerogel
ترجمه فارسی عنوان
مدلسازی هدایت حرارتی ظاهری جامد هیدروژل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
This paper provides an insight into the heat transfer in the solid backbone of aerogel and an effective approach to model the apparent solid thermal conductivity of aerogels. First, a model for the thermal conductivity of aerogel solid backbone is developed based on thermal constriction resistance between interconnected nano-particles by taking into account the size effect of a single particle, and validated by the numerical solutions of the gray Boltzmann transport equation (BTE). Then, combined with the analytical expression derived based on the Laplace heat conduction equation, the proposed model is used to predict the apparent solid thermal conductivity of aerogels, and the predictions are in good agreement with the available experimental data of different kinds of aerogels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 120, May 2018, Pages 724-730
نویسندگان
, ,