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International Journal of Nanoscience and Nanotechnology (IJNN)، جلد ۹، شماره ۲، صفحات ۷۷-۸۴
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عنوان انگلیسی Experimental Study of Nanofluids Flow in a Micromodel as Porous Medium
چکیده انگلیسی مقاله For better understanding the effect of nanofluid flow in a porous medium, a set of experiments were conducted on a horizontal glass micromodel for Al2O3-water nanofluids. To characterize the flow of nanofluids the same experiment was done by pure water. The glass micromodel was constructed by a photolithography technique. The Al2O3-water nanofluids were produced by a two-step method and no surfactant or PH changes were used. The nanofluids were made in different volume fractions of 0.1%, 0.5%, and 1%. The experimental results show that the pressure drop of nanofluids through the micromodel increases up to 43% at volume concentration of 0.01. Moreover, the Al2O3-water nanofluids behave like a Newtonian fluid and follow Darcy’s law at low Reynolds numbers. The permeability of the porous medium has been evaluated in different volume fraction of nanofluids and pure water. The results reveal that the assessed permeability doesn’t change significantly in various volume concentrations of nanoparticles in the constructed micromodel. A semi analytical correlation was proposed for calculating the permeability of such porous medium.
کلیدواژه‌های انگلیسی مقاله Nanofluid,Micromodel,Porous Medium,Permeability,Experiment
نویسندگان مقاله امیرحسین مقدادی اصفهانی | a h meghdadi isfahani
department of mechanical engineering, najafabad branch, islamic azad university, isfahan, i. r. iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

محمد مهدی هیهات | m m
faculty of mechanical engineering, k. n. toosi university of technology, tehran, i. r. iran
سازمان اصلی تایید شده: دانشگاه صنعتی خواجه نصیرالدین طوسی (Khajeh nasir toosi university of technology)

نشانی اینترنتی http://www.ijnnonline.net/article_3822_9b6d6f1bc6dabc98a348d089f28e55bd.pdf
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