کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
657493 | 1458069 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heat conduction modeling in 3-D ordered structures for prediction of aerogel thermal conductivity
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Heat conduction modeling in 3-D ordered structures for prediction of aerogel thermal conductivity Heat conduction modeling in 3-D ordered structures for prediction of aerogel thermal conductivity](/preview/png/657493.png)
چکیده انگلیسی
A modified three-dimensional (3-D) numerical model is proposed to study heat conduction in nanoporous aerogel by simulating the representative ordered structures. We introduce size effects of the aerogel particle and the pore into the numerical model to improve prediction accuracy for the effective thermal conductivity of aerogel. The numerical model is examined by comparing with available experimental data and 2-D numerical results. The coupled heat transfer between the aerogel solid and gas phases is investigated, and the effect of gas pressure on prediction accuracy of the present model is also discussed. The results show that the present model can accurately predict the effective thermal conductivity of aerogel when the aerogel density is above 120Â kg/m3 and the gas pressure is in the range of 104-105Â Pa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 73, June 2014, Pages 103-109
Journal: International Journal of Heat and Mass Transfer - Volume 73, June 2014, Pages 103-109
نویسندگان
C. Bi, G.H. Tang, Z.J. Hu,