کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
656483 1458043 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dependency of the thermophysical properties of nanofluids on the excess adsorption
ترجمه فارسی عنوان
وابستگی خواص ترموفیزیکی نانوسیم ها بر جذب بیش از حد
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• The base fluid molecules create solid like layers around nanoparticles.
• The size of nanoparticle and temperature affect the nanolayer structure.
• Thermophysical properties of the nanolayer are different from the bulk molecules.
• Increasing the adsorption cause to significant change in the nanofluid properties.
• Enhancement of the nanofluid properties has a linear correlation with adsorption.

The difference between the experimental thermophysical properties of nanofluids and the values obtained by ideal mixture theory was investigated. It is shown that by ignoring fluid adsorption around nanoparticles in a nanofluid, ideal mixture theory underestimates the density, thermal conductivity, and viscosity and overestimates the heat capacity and thermal expansion coefficient of the nanofluids. Dependency of these deviations upon the adsorption of nanofluid molecules on the surface of nanoparticles was investigated and a linear correlation was observed at different temperatures, concentrations, and nanoparticle diameters. The excess adsorption of the nanofluid molecules is obtained by using an accurate version of the density functional theory.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 99, August 2016, Pages 630–637
نویسندگان
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