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\begin{document}

\title{AUGMENTATION OF HEAT TRANSFER IN A MICROTUBE AND A WAVY MICROCHANNEL
USING HYBRID NANOFLUID: A NUMERICAL INVESTIGATION}



\author[1]{Shikhar Singh}%
\author[2]{Suvanjan  Bhattacharyya}%
\author[1]{ A. R.  Paul}%
\author[3]{M.  Sharifpur}%
\author[3]{Josua Petrus Meyer}%
\affil[1]{Motilal Nehru National Institute of Technology}%
\affil[2]{Birla Institute of Technology and Science}%
\affil[3]{University of Pretoria}%


\vspace{-1em}



  
  \date{May 04, 2024}


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\begin{abstract}
The paper discusses the numerical investigation involving forced
convective heat transfer (HT) in the laminar flow regime is carried out
for nanofluid (NF) and hybrid nanofluid (HNF) in a microtube and wavy
microchannel. Water-based Al2O3 nanofluid and water-based Al2O3-Ag
hybrid nanofluid is studied for this purpose. Reynolds Number (Re),
temperature, volume fraction, and nanoparticle (NP) size are varied for
the analysis at a constant heat transfer rate. Numerical results
characterizing the performances of nanofluid and hybrid nanofluid are
presented in terms of the local heat transfer coefficient. It is found
that with the increase in Reynolds number, volume fraction and
temperature, local heat transfer coefficient is increased. Comparison of
nanofluid and hybrid nanofluid reveals superior heat transfer property
of the later. However, microtube exhibits better heat transfer
coefficient than the wavy channel at constant heat flux, length and
area.%
\end{abstract}%



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