Prediction of hydrothermal behavior of a non-Newtonian nanofluid in a square channel by modeling of thermophysical properties using neural network
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Amani M., Amani P., Bahiraei M., Wongwises S.
Publisher: Springer Verlag (Germany) / Akadémiai Kiadó
Publication year: 2019
Journal: Journal of Thermal Analysis and Calorimetry (1388-6150)
Volume number: 135
Issue number: 2
Start page: 901
End page: 910
Number of pages: 10
ISSN: 1388-6150
eISSN: 1588-2926
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
This paper assesses the contribution of TiO 2 nanoparticles on thermal performance of a 0.5 mass% aqueous solution of carboxymethyl cellulose (CMC) in a square channel. In this regard, a neural network model is firstly developed for modeling of power law index, consistency index, and thermal conductivity of the aqueous solution of TiO 2 /CMC-water non-Newtonian nanofluid in terms of the nanoparticle concentration and temperature. Then, an attempt is made to evaluate the friction factor and heat transfer coefficient relative values. According to the results, it is found that the friction factor ratio is directly proportional to the temperature and nanoparticle content, while it inversely varies relative to the shear rate. Moreover, heat transfer coefficient ratio is improved at elevated nanoparticle content, and this improvement is much more profound at higher temperature conditions. For practical purposes, the nanofluid hydrothermal performance index is examined since the addition of nanoparticles increases both heat transfer and friction factor. The corresponding data disclose that the performance index is directly proportional to the nanoparticle content, especially at decreased shear rate and elevated temperature conditions. The application of TiO 2 /CMC-water nanofluid is found to be more favorable for applications with elevated shear rate conditions. ฉ 2018, Akad้miai Kiad๓, Budapest, Hungary.
Keywords
Non-Newtonian nanofluid, Square channel
Contact Information