Investigation of Nanoparticles Morphology on Viscosity of Nanofluids and New Correlation for Prediction
This article presents an experimental investigation on effects of morphology of nanoparticles on the viscosity nanofluids (NFs). Water and ethylene glycol were used as base fluids. A two step method was used for preparation of NFs. SiO2 nanoparticles, CNT and graphene nano sheets were dispersed in t...
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Nanoscience and Nanotechnology Research Center, University of Kashan
2015-04-01
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doaj-ffdbef96f5464ac5baf630793f7c10992020-11-24T23:15:38ZengNanoscience and Nanotechnology Research Center, University of KashanJournal of Nanostructures2251-78712251-788X2015-04-015216116810.7508/jns.2015.02.01110319Investigation of Nanoparticles Morphology on Viscosity of Nanofluids and New Correlation for PredictionA. Ghozatloo0S. Azimi Maleki1M. Shariaty-Niassar2A. Morad Rashidi3Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, P.O. Box: 14665-137, Tehran, Iran| Transport phenomena and Nanotechnology Laboratory (TPNT), Department of Chemical Engineering, School of Eng., University of Tehran, P.O. Box: 11155-4563, Tehran, IranDepartment of Chemical Engineering, College of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran.Transport phenomena and Nanotechnology Laboratory (TPNT), Department of Chemical Engineering, School of Eng., University of Tehran, P.O. Box: 11155-4563, Tehran, IranResearch Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, P.O. Box: 14665-137, Tehran, IranThis article presents an experimental investigation on effects of morphology of nanoparticles on the viscosity nanofluids (NFs). Water and ethylene glycol were used as base fluids. A two step method was used for preparation of NFs. SiO2 nanoparticles, CNT and graphene nano sheets were dispersed in the base fluids separately with the volume fraction ranging from 0.05% to 1.5%. Stability of the nanoparticles was established by adding adequate surfactant and sonication enough time. Then viscosity of the NFs was measured by Brookfield viscometer at fix ambient temperature. First, it has been concluded that, viscosity of NFs increases significantly with increasing of nanoparticle volume fraction. Then the results of theoretical models (Einstein, Brinkman, Batchelor and Wang) were compared with experimental data and the deviation of theme was calculated. In order to reduce of this deviation, a correlation was developed based on the geometry of nanoparticles. The modified models showed reasonably better agreement with the experimental resultshttp://jns.kashanu.ac.ir/article_10319_1bb8dedd9e637111219782fe8b544528.pdfCNTGrapheneNanofluidmorphologyViscosity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A. Ghozatloo S. Azimi Maleki M. Shariaty-Niassar A. Morad Rashidi |
spellingShingle |
A. Ghozatloo S. Azimi Maleki M. Shariaty-Niassar A. Morad Rashidi Investigation of Nanoparticles Morphology on Viscosity of Nanofluids and New Correlation for Prediction Journal of Nanostructures CNT Graphene Nanofluid morphology Viscosity |
author_facet |
A. Ghozatloo S. Azimi Maleki M. Shariaty-Niassar A. Morad Rashidi |
author_sort |
A. Ghozatloo |
title |
Investigation of Nanoparticles Morphology on Viscosity of Nanofluids and New Correlation for Prediction |
title_short |
Investigation of Nanoparticles Morphology on Viscosity of Nanofluids and New Correlation for Prediction |
title_full |
Investigation of Nanoparticles Morphology on Viscosity of Nanofluids and New Correlation for Prediction |
title_fullStr |
Investigation of Nanoparticles Morphology on Viscosity of Nanofluids and New Correlation for Prediction |
title_full_unstemmed |
Investigation of Nanoparticles Morphology on Viscosity of Nanofluids and New Correlation for Prediction |
title_sort |
investigation of nanoparticles morphology on viscosity of nanofluids and new correlation for prediction |
publisher |
Nanoscience and Nanotechnology Research Center, University of Kashan |
series |
Journal of Nanostructures |
issn |
2251-7871 2251-788X |
publishDate |
2015-04-01 |
description |
This article presents an experimental investigation on effects of morphology of nanoparticles on the viscosity nanofluids (NFs). Water and ethylene glycol were used as base fluids. A two step method was used for preparation of NFs. SiO2 nanoparticles, CNT and graphene nano sheets were dispersed in the base fluids separately with the volume fraction ranging from 0.05% to 1.5%. Stability of the nanoparticles was established by adding adequate surfactant and sonication enough time. Then viscosity of the NFs was measured by Brookfield viscometer at fix ambient temperature. First, it has been concluded that, viscosity of NFs increases significantly with increasing of nanoparticle volume fraction. Then the results of theoretical models (Einstein, Brinkman, Batchelor and Wang) were compared with experimental data and the deviation of theme was calculated. In order to reduce of this deviation, a correlation was developed based on the geometry of nanoparticles. The modified models showed reasonably better agreement with the experimental results |
topic |
CNT Graphene Nanofluid morphology Viscosity |
url |
http://jns.kashanu.ac.ir/article_10319_1bb8dedd9e637111219782fe8b544528.pdf |
work_keys_str_mv |
AT aghozatloo investigationofnanoparticlesmorphologyonviscosityofnanofluidsandnewcorrelationforprediction AT sazimimaleki investigationofnanoparticlesmorphologyonviscosityofnanofluidsandnewcorrelationforprediction AT mshariatyniassar investigationofnanoparticlesmorphologyonviscosityofnanofluidsandnewcorrelationforprediction AT amoradrashidi investigationofnanoparticlesmorphologyonviscosityofnanofluidsandnewcorrelationforprediction |
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1725590089302540288 |