Dual-MRT lattice Boltzmann method combined with experimental measurements of nanofluid’s properties for analysis of fin-orientation effect on natural convection heat transfer
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 30 March 2020
Issue publication date: 16 November 2020
Abstract
Purpose
Natural convection heat transfer during free convection phenomenon in a cavity included with active fins and pipes is investigated. The influence of the orientation of fins on the heat transfer between heat source (i.e. hot fins) and heat sink (i.e. cold pipes) is investigated by using numerical and experimental techniques.
Design/methodology/approach
For the numerical simulations, the multiple relaxation time (MRT) thermal lattice Boltzmann method (LBM) is used. In this numerical approach, two separated distribution functions are used to solve the flow and temperature distributions within the computational domain. Furthermore, the local/volumetric second law analysis is used to show the impact of evaluated parameters on the heat transfer irreversibility. In addition, the dynamic viscosity and thermal conductivity of TiO2-water nanofluid are measured by using Brookfield viscometer and KD2 pro conductmeter, respectively.
Findings
The examined range of Rayleigh number is from 103 to 106, and the nanofluid samples are provided in 0, 20, 40, 60, 80 and 100 ppm.
Originality/value
The originality of this work is use of dual-MRT thermal LBM and experimental measurements of rheological/thermal properties of nanofluid for investigation of free convection problem for the considered application.
Keywords
Acknowledgements
Retraction notice: The publishers of International Journal of Numerical Methods for Heat & Fluid Flow wish to retract the article “Dual-MRT lattice Boltzmann method combined with experimental measurements of nanofluid’s properties for analysis of fin-orientation effect on natural convection heat transfer” by X. Wang and D Ross which appeared in Volume 30, Issue 12, 2020.
It has come to our attention that there are concerns regarding the identity of the author “David Ross” and the originality of this paper. A reasonable description of authors’ contribution to the paper has not been provided and concerns regarding its originality have not been addressed.
Despite numerous attempts to contact the authors, the journal has received no response; the response of the authors would be gratefully received.
The International Journal of Numerical Methods for Heat & Fluid Flow submission guidelines make it clear that only those who have made a substantial contribution to the article should be credited as authors and that articles must be original. The publishers of the journal sincerely apologize to the readers.
Citation
Wang, X. and Ross, D. (2020), "Dual-MRT lattice Boltzmann method combined with experimental measurements of nanofluid’s properties for analysis of fin-orientation effect on natural convection heat transfer", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 30 No. 12, pp. 5017-5035. https://doi.org/10.1108/HFF-10-2019-0735
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited