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Computational and Experimental Investigation of Flow and Convective Heat Transfer Along Rough Surfaces Read chapter Read first chapter

2023 | OriginalPaper | Chapter

Convective Instability in a Composite Nanofluid Layer Under Local Thermal Non-equilibrium

Authors : Anurag Srivastava, B. S. Bhadauria

Published in: Frontiers in Industrial and Applied Mathematics

Publisher: Springer Nature Singapore

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Abstract

Linear, as well as weakly non-linear, analyses have been done to understand the onset of convection and heat and mass transport in a composite nanofluid horizontal layer heated from below under LTNE (local thermal non-equilibrium) effect. Two different types of nanoparticles are assumed to be suspended in the base fluid. Both the nanoparticles and the base fluid are taken to be at different temperature, and therefore, three temperature model is used for LTNE. Thermal Rayleigh number is evaluated analytically using Galerkin’s approach while non-linear analysis is done numerically. The effect of both top-heavy and bottom-heavy configurations of nanoparticles over convective instability is examined. It is found that the system is more stable in case of bottom-heavy configuration when compared to that of top-heavy case. Moreover, the effect of LTNE depends upon the concentration of nanoparticles significantly. A comparison between streamlines, isotherms and isohalines for both LTE (local thermal equilibrium) and LTNE cases is also presented.

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Metadata
Title
Convective Instability in a Composite Nanofluid Layer Under Local Thermal Non-equilibrium
Authors
Anurag Srivastava
B. S. Bhadauria
Copyright Year
2023
Publisher
Springer Nature Singapore
Book
Frontiers in Industrial and Applied Mathematics

Print ISBN: 978-981-19-7271-3

Electronic ISBN: 978-981-19-7272-0

Copyright Year: 2023

DOI
https://doi.org/10.1007/978-981-19-7272-0_9

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