ENHANCED VISCOSITY OF AQUEOUS SILICA NANOFLUIDS Chapter

abstract

• The viscosity of aqueous silica (SiO 2) nanofluids was measured using a parallel-disk rotational rheometer. The silica nanoparticles had a nominal diameter of 10 nm. The mass concentration of the silica nanoparticles was varied in this study from 0.1%-20%. Each nanofluid sample was sonicated in an ultra-sonication bath for the same duration. A convection oven within the test section was used to investigate the variation of the viscosity as a function of temperature for the aqueous silica nanofluids. The viscosity measurements were also performed by increasing the shear rate. The pH of the nanofluids was maintained at a fixed value for each sample. The results show that the viscosity of the nanofluids follows a shear thinning behavior since the viscosity decreased as the shear rates were increased. This shear thinning behavior was more acute at higher temperatures. The viscosity of the nanofluids was found to increase with increase in the concentration of the nanoparticles, where the pH was maintained at a constant value.

authors

• Banerjee, Debjyoti

author list (cited authors)

• Jo, B., & Banerjee, D.

citation count

• 2

complete list of authors

• Jo, Byeongnam||Banerjee, Debjyoti

Book Title

• Developments in Strategic Materials and Computational Design II

publication date

• September 2011

publisher

• Wiley  Publisher

published in

• Ceramic Engineering and Science Proceedings  Journal

keywords

• Aqueous Silica Nanofluids
• Nominal Diameter
• Shear Rates
• Silica Nanoparticles
• Solar Energy Program

Digital Object Identifier (DOI)

• 10.1002/9781118095393.ch13

International Standard Book Number (ISBN) 13

• 978-1-118-17237-7

start page

• 139

end page

• 146

volume

• 32

URL

• http%3A%2F%2Fdx.doi.org%2F10.1002%2F9781118095393.ch13