Entropy generation analysis of multi-walled carbon nanotube dispersed nanoliquid in the presence of heat source through a vertical microchannel
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 27 March 2020
Issue publication date: 16 November 2020
Abstract
Purpose
The influence of radiation on nanoliquid flow through a vertical microchannel in the presence of heat source is examined. This study aims to investigate the efficiency of multi-walled carbon nanotube (MWCNT) considering water and engine oil as base fluid.
Design/methodology/approach
Nondimensional variables are used to obtain the dimensionless physical model. The solutions are computed numerically via Runge–Kutta–Fehlberg integration scheme.
Findings
It is established that (knf/kf)Lamina > (knf/kf)Column > (knf/kf)Tetrahedron > (knf/kf)Hexahedron > (knf/kf)Sphere.
Originality/value
Thermal conductivity of MWCNT is analyzed using different models. Also, it is remarked that Xue model exhibits higher thermal conductivity for MWCNT compared to Maxwell model, Yu-Choi model and Hamilton-Crosser model.
Keywords
Citation
Sindhu, S., Gireesha, B.J. and Sowmya, G. (2020), "Entropy generation analysis of multi-walled carbon nanotube dispersed nanoliquid in the presence of heat source through a vertical microchannel", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 30 No. 12, pp. 5063-5085. https://doi.org/10.1108/HFF-10-2019-0754
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited