کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7051433 | 1457377 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Air flow through confined metal foam passage: Experimental investigation and mathematical modelling
ترجمه فارسی عنوان
جریان هوا از طریق عبور فوم فلزی محصور: تحقیق تجربی و مدل سازی ریاضی
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کلمات کلیدی
جریان سیالات، عبور جریان محدود فوم فلزی، مطالعه تجربی، مدل سازی نظری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
This paper deals with flow behaviour through a confined passage filled with metal foams (MFs). Two sets (four samples) of aluminium foams of 20 and 40â¯ppi pore densities with 9-11% and 12-16% relative densities (RD) individually (as per supplier's specification) were used for the study. Former RD belonged to uncompressed metal foams whereas the later was achieved by unidirectional compression of metal foam of 6-8% RD. Measured porosities of the uncompressed 20 and 40â¯ppi MF samples were equal, which was 0.88. However, measured porosities were 0.83 and 0.86 for compressed 20 and 40â¯ppi MF samples. Flow characteristics of both compressed and uncompressed samples were experimentally measured. Fourie-Plessis's representative unit cell (RUC) model was used as an analytical tool for estimating pressure drop gradient through MFs because of its simplistic approach and independency from flow characteristics. Possible encasing wall effect on pressure drop was theoretically conducted. Due to a significant difference in estimated and experimentally obtained pressure drop gradient, authors have proposed a modification in the RUC model. The modified version of the RUC model was able to estimate pressure drop gradient of the uncompressed samples with a considerably higher accuracy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 99, December 2018, Pages 13-25
Journal: Experimental Thermal and Fluid Science - Volume 99, December 2018, Pages 13-25
نویسندگان
Mohammad Sajid Hossain, Bahman Shabani,