Rheological properties and transfer phenomena of nanofluids

Kang Min Jung, Sung Hyun Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This study focused on the synthesis of stable nanofluids and investigation of their rhelogical properties and transfer phenomena. Nanofluids of diamond/ethylene glycol, alumina/transformer oil and silica/water were made to use in this study. Rheological properties of diamond nanofluids were determined at constant temperature (25°C) using a viscometer. For the convective heat transfer experiment, alumina nanofluid passed through the plate heat exchanger. CO2 absorption experiment was conducted in a bubble type absorber containing silica nanofluid. Diamond nanofluid showed non-Newtonian behaviors under a steady-shear flow except the case of very low concentration of solid nanoparticles. The heat transfer coefficient of alumina nanofluid was higher than that of base fluid. One possible reason is that concentration of nanoparticles at the wall side is higher than that of microparticles. Silica nanofluid showed that both average CO2 absorption rate and total absorption amount enhanced than those of base fluid. The stably suspended nanoparticles create a mesh-like structure. That structure arrangement cracks the gas bubble and increases the surface area.

Original languageEnglish
Title of host publicationThe XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting
Pages773-775
Number of pages3
DOIs
Publication statusPublished - 2008
Event15th International Congress on Rheology - Monterey, CA, United States
Duration: 2008 Aug 32008 Aug 8

Publication series

NameAIP Conference Proceedings
Volume1027
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other15th International Congress on Rheology
CountryUnited States
CityMonterey, CA
Period08/8/308/8/8

Keywords

  • CO absorption
  • Heat transfer
  • Nanofluid

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Jung, K. M., & Kim, S. H. (2008). Rheological properties and transfer phenomena of nanofluids. In The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting (pp. 773-775). (AIP Conference Proceedings; Vol. 1027). https://doi.org/10.1063/1.2964842