TY  - JOUR
Y1  - 2017///
EP  - 255
A1  - Ilyas, S.U.
A1  - Pendyala, R.
A1  - Narahari, M.
ID  - scholars8347
SN  - 07351933
TI  - Rheological behavior of mechanically stabilized and surfactant-free MWCNT-thermal oil-based nanofluids
SP  - 250
N1  - cited By 20
JF  - International Communications in Heat and Mass Transfer
VL  - 87
N2  - The viscosity of nanofluids is one of the important parameter for the design of heat transfer processes. The evolution of usage of nanofluids in heat transfer processes is gaining more industrial consideration due to excellent thermal properties. However, limited attention is focused on the rheological behavior of nanofluids as of today. The multiwall carbon nanotubes (MWCNTs) are stabilized in thermal oil using ultrasonication and high stability is observed. The rheological behavior of thermal-oil based dispersant-free nanofluids are studied at varying high shear rates (100â??2000 sâ?? 1), temperatures (25â??90 °C) and nanoparticle concentrations (0.1â??1 wt). The effect on the shear stress and viscosity by the addition of carbon nanotubes in thermal oil is discussed. The measured effective viscosity is compared with different theoretical conventional models. A significant increment in relative viscosity is observed at high concentrations of carbon nanotubes. A correlation is developed based on the temperature, nanomaterial concentration, and shear rate. © 2017 Elsevier Ltd
PB  - Elsevier Ltd
AV  - none
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028002562&doi=10.1016%2fj.icheatmasstransfer.2017.07.015&partnerID=40&md5=82b0d454c1f7f6520d1a880dc9f1e65d
ER  -