Entropy generation analysis of multi-walled carbon nanotube dispersed nanoliquid in the presence of heat source through a vertical microchannel

S. Sindhu; B. J. Gireesha; G. Sowmya

doi:10.1108/HFF-10-2019-0754

Entropy generation analysis of multi-walled carbon nanotube dispersed nanoliquid in the presence of heat source through a vertical microchannel

S. Sindhu^*, B. J. Gireesha, G. Sowmya

^*Corresponding author for this work

Department of Mathematics, Manipal Institute of Technology, Bengaluru

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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 (k_nf/k_f)_Lamina > (k_nf/k_f)_Column > (k_nf/k_f)_Tetrahedron > (k_nf/k_f)_Hexahedron > (k_nf/k_f)_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.

Original language	English
Pages (from-to)	5063-5085
Number of pages	23
Journal	International Journal of Numerical Methods for Heat and Fluid Flow
Volume	30
Issue number	12
DOIs	https://doi.org/10.1108/HFF-10-2019-0754
Publication status	Published - 13-11-2020

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Computer Science Applications
Applied Mathematics

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10.1108/HFF-10-2019-0754

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title = "Entropy generation analysis of multi-walled carbon nanotube dispersed nanoliquid in the presence of heat source through a vertical microchannel",

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.",

author = "S. Sindhu and Gireesha, \{B. J.\} and G. Sowmya",

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doi = "10.1108/HFF-10-2019-0754",

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AU - Gireesha, B. J.

AU - Sowmya, G.

PY - 2020/11/13

Y1 - 2020/11/13

N2 - 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.

AB - 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.

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Entropy generation analysis of multi-walled carbon nanotube dispersed nanoliquid in the presence of heat source through a vertical microchannel

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