کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7055147 | 1458040 | 2016 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of pressure drop-flow rate and flow resistance characteristics of heated porous materials under local thermal non-equilibrium conditions
ترجمه فارسی عنوان
بررسی افت جریان فشار و ویژگی های مقاومت جریان از مواد متخلخل تحت حرارت در شرایط غیر گرمای محلی حرارتی
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کلمات کلیدی
مواد متخلخل افت فشار، مقاومت در برابر جریان، قدرت پمپاژ مبتنی بر دما، توزیع دما،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Porous materials are used as pneumatic components in a wide range of industrial applications. Such porous materials contain thousands of interconnected irregular micro-pores that produce a large pressure drop (ÎP) between the upstream and downstream sides of the porous material when a fluid flows through it. The relationship between the pressure drop and flow rate (i.e., the ÎP â G characteristic) and the relationship between flow resistance (γ) and flow rate (the γ-G characteristic) are two very important basic characteristics. One factor affecting them is temperature, whose variation changes the viscosity and density of the fluid. In this study, we experimentally and theoretically analyzed the effect of temperature on ÎP â G and flow resistance characteristics of porous materials by heating them under constant electric heating power. The resulting experimental ÎP â G and flow resistance curves shift upward relative to their counterparts at room temperature owing to the increase in fluid temperature, but remain within the adiabatic and room temperature curves. The temperature-effect ratio η at constant heating power increases from 1.3 to 1.7 as the flow rate decreases from 21.53 Ã 10â5 kg/s to 5.80 Ã 10â5 kg/s, indicating that ÎP â G and flow resistance characteristics and pumping power change significantly when a porous material is heated. Furthermore, temperature distributions were obtained numerically to gain deeper understanding of the temperature effect. The effects of heating power values, characteristic porous material coefficients, and average fluid density on ÎP â G and flow resistance characteristics were also investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 102, November 2016, Pages 528-543
Journal: International Journal of Heat and Mass Transfer - Volume 102, November 2016, Pages 528-543
نویسندگان
Yuxuan Liao, Xin Li, Wei Zhong, Guoliang Tao,