Effect of the multi-sized nanoparticle distribution on the thermal conductivity of nanofluids

Sasidhar Kondaraju, E. K. Jin, Joon Sang Lee

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Recent studies of nanofluids have shown that the nanoparticles when mixed in fluid medium such as water and ethylene glycol enhance the thermal conductivity of the colloids when compared to the fluid medium. However, numerous experimental studies conducted on the effective thermal conductivity of nanofluids, while using initial particle distribution consisting of range of diameters, have reported their results at volume-weighted average diameters. Here, we use computer simulations to investigate the effect of initial particle distribution or the effect of polydispersivity on the effective thermal conductivity of nanofluids. The study reveals that the simulations performed with multi-sized nanoparticles predict the effective thermal conductivity values of nanofluids closer to the experimental values than the corresponding volume weighted average diameters. Inhomogeneous coagulations in the multi-sized nanofluids were found to be a major factor for the deviation of effective thermal conductivity of the nanofluids in single- and multi-sized nanofluids. Our results suggest that initial distribution of particles has a significant role in predicting the effective thermal conductivity of nanofluids.

Original languageEnglish
Pages (from-to)133-144
Number of pages12
JournalMicrofluidics and Nanofluidics
Volume10
Issue number1
DOIs
Publication statusPublished - 2011 Jan 1

Fingerprint

Thermal conductivity
thermal conductivity
Nanoparticles
nanoparticles
Fluids
Ethylene Glycol
fluids
Colloids
coagulation
Coagulation
Ethylene glycol
colloids
glycols
ethylene
computerized simulation
deviation
Water
Computer simulation
water
simulation

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

@article{ed538149ad1f43f1a5c06451655c8083,
title = "Effect of the multi-sized nanoparticle distribution on the thermal conductivity of nanofluids",
abstract = "Recent studies of nanofluids have shown that the nanoparticles when mixed in fluid medium such as water and ethylene glycol enhance the thermal conductivity of the colloids when compared to the fluid medium. However, numerous experimental studies conducted on the effective thermal conductivity of nanofluids, while using initial particle distribution consisting of range of diameters, have reported their results at volume-weighted average diameters. Here, we use computer simulations to investigate the effect of initial particle distribution or the effect of polydispersivity on the effective thermal conductivity of nanofluids. The study reveals that the simulations performed with multi-sized nanoparticles predict the effective thermal conductivity values of nanofluids closer to the experimental values than the corresponding volume weighted average diameters. Inhomogeneous coagulations in the multi-sized nanofluids were found to be a major factor for the deviation of effective thermal conductivity of the nanofluids in single- and multi-sized nanofluids. Our results suggest that initial distribution of particles has a significant role in predicting the effective thermal conductivity of nanofluids.",
author = "Sasidhar Kondaraju and Jin, {E. K.} and Lee, {Joon Sang}",
year = "2011",
month = "1",
day = "1",
doi = "10.1007/s10404-010-0653-9",
language = "English",
volume = "10",
pages = "133--144",
journal = "Microfluidics and Nanofluidics",
issn = "1613-4982",
publisher = "Springer Verlag",
number = "1",

}

Effect of the multi-sized nanoparticle distribution on the thermal conductivity of nanofluids. / Kondaraju, Sasidhar; Jin, E. K.; Lee, Joon Sang.

In: Microfluidics and Nanofluidics, Vol. 10, No. 1, 01.01.2011, p. 133-144.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of the multi-sized nanoparticle distribution on the thermal conductivity of nanofluids

AU - Kondaraju, Sasidhar

AU - Jin, E. K.

AU - Lee, Joon Sang

PY - 2011/1/1

Y1 - 2011/1/1

N2 - Recent studies of nanofluids have shown that the nanoparticles when mixed in fluid medium such as water and ethylene glycol enhance the thermal conductivity of the colloids when compared to the fluid medium. However, numerous experimental studies conducted on the effective thermal conductivity of nanofluids, while using initial particle distribution consisting of range of diameters, have reported their results at volume-weighted average diameters. Here, we use computer simulations to investigate the effect of initial particle distribution or the effect of polydispersivity on the effective thermal conductivity of nanofluids. The study reveals that the simulations performed with multi-sized nanoparticles predict the effective thermal conductivity values of nanofluids closer to the experimental values than the corresponding volume weighted average diameters. Inhomogeneous coagulations in the multi-sized nanofluids were found to be a major factor for the deviation of effective thermal conductivity of the nanofluids in single- and multi-sized nanofluids. Our results suggest that initial distribution of particles has a significant role in predicting the effective thermal conductivity of nanofluids.

AB - Recent studies of nanofluids have shown that the nanoparticles when mixed in fluid medium such as water and ethylene glycol enhance the thermal conductivity of the colloids when compared to the fluid medium. However, numerous experimental studies conducted on the effective thermal conductivity of nanofluids, while using initial particle distribution consisting of range of diameters, have reported their results at volume-weighted average diameters. Here, we use computer simulations to investigate the effect of initial particle distribution or the effect of polydispersivity on the effective thermal conductivity of nanofluids. The study reveals that the simulations performed with multi-sized nanoparticles predict the effective thermal conductivity values of nanofluids closer to the experimental values than the corresponding volume weighted average diameters. Inhomogeneous coagulations in the multi-sized nanofluids were found to be a major factor for the deviation of effective thermal conductivity of the nanofluids in single- and multi-sized nanofluids. Our results suggest that initial distribution of particles has a significant role in predicting the effective thermal conductivity of nanofluids.

UR - http://www.scopus.com/inward/record.url?scp=79551471297&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79551471297&partnerID=8YFLogxK

U2 - 10.1007/s10404-010-0653-9

DO - 10.1007/s10404-010-0653-9

M3 - Article

AN - SCOPUS:79551471297

VL - 10

SP - 133

EP - 144

JO - Microfluidics and Nanofluidics

JF - Microfluidics and Nanofluidics

SN - 1613-4982

IS - 1

ER -