Nanofluid flow and heat transfer due to natural convection in a semi-circle/ellipse annulus using modified lattice Boltzmann method
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 16 July 2019
Issue publication date: 21 November 2019
Abstract
Purpose
This paper aims to numerically investigate the nanofluid flow, heat transfer and entropy generation during natural convection in an annulus.
Design/methodology/approach
The lattice Boltzmann method is used to simulate the velocity and temperature fields. Furthermore, some special modifications are applied to make the lattice Boltzmann method capable for simulation in the curved boundary conditions. The annulus is filled with CuO-water nanofluid. The dynamic viscosity of nanofluid is estimated using KLL (Koo-Kleinstreuer-Li) model, and the nanoparticle shape effect is taken account in calculating the thermal conductivity. On the other hand, the local/volumetric entropy generation is used to show the irreversibility under influence of different parameters.
Findings
The effect of considered governing parameters including Rayleigh number (103<Ra < 106); nanoparticle concentration (0<<0.04) and configuration of annulus on the flow structure; temperature field; and local and total entropy generation and heat transfer rate are presented.
Originality/value
The originality of this work is using of lattice Boltzmann method is simulation of natural convection in a curved configuration and using of Koo–Kleinstreuer–Li correlation for simulation of nanofluid.
Keywords
Acknowledgements
Retraction notice: The publishers of International Journal of Numerical Methods for Heat & Fluid Flow wish to retract the article “Nanofluid flow and heat transfer due to natural convection in a semi-circle/ellipse annulus using modified lattice Boltzmann method” by Q. Xiong, A. Khosravi, N. Nabipour, M.H. Doranehgard, A. Sabaghmoghadam and D. Ross which appeared in Volume 29, Issue 12, 2019.
It has come to our attention that there are concerns regarding the identity of the author “David Ross” and the paper’s authors have not been able to confirm David Ross’ identity. Despite numerous attempts to contact “David Ross” the journal has not received any response.
Portions of the article are also taken, without attribution, from the following sources:
Payam Hooshmand, Hamidreza Khakrah, Mohammad Yaghoub Abdollahzadeh Jamalabadi, David Ross, (2019), ‘RETRACTED: Natural convection heat transfer in a circle-square annulus using lattice Boltzmann method- Treatment of curved boundary conditions’, International Journal of Mechanical Sciences, Volumes, 161-162, 105086, ISSN 0020-7403, https://doi.org/10.1016/j.ijmecsci.2019.105086.
Aravindhan Surendar, J. Muralidharan, Ali Dehghan Saee, Andino Maseleno, Aleksandr Alekseevich Rudenko, David Ross, (2019), ‘WITHDRAWN: Mathematical modelling of free convection in an ellipse-rectangular annulus filled with nanofluid using LBM’, Thermal Science and Engineering Progress, 100375, ISSN 2451-9049, https://doi.org/10.1016/j.tsep.2019.100375.
Pu, Q., Aalizadeh, F., Aghamolaei, D., Masoumnezhad, M., Rahimi, A. and Kasaeipoor, A. (2019), “Lattice Boltzmann simulation of convective flow and heat transfer in a nanofluid-filled hollow cavity”, International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 9, pp. 3075-3094, https://doi.org/10.1108/HFF-12-2018-0809.
Ahmad Hasanzadeh Fard, Payam Hooshmand, Mehdi Mohammaei, David Ross, (2019), ‘RETRACTED: Numerical study on free convection in a U-shaped CuO/water nanofluidfilled cavity with different aspect ratios using double-MRT lattice Boltzmann’, Thermal Science and Engineering Progress, Volume 14, 100373, ISSN 2451-9049, https://doi.org/10.1016/j.tsep.2019.100373.
KhakRah, H., Hooshmand, P., Ross, D. and Jamshidian, M. (2019), “Numerical analysis of free convection and entropy generation in a cavity using compact finite-difference lattice Boltzmann method”, International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 30 No. 2, pp. 977-995, https://doi.org/10.1108/HFF-07-2019-0532.
Hamidreza Khakrah, Payam Hooshmand, Mohammad Yaghoub Abdollahzadeh Jamalabadi, Sina Azar, (2019), ‘Thermal lattice Boltzmann simulation of natural convection in a multi-pipe sinusoidal-wall cavity filled with Al2O3-EG nanofluid’, Powder Technology, Volume 356, Pages 240-252, ISSN 0032-5910, https://doi.org/10.1016/j.powtec.2019.08.013.
Sun, H. and Ross, D. (2019), “Multiple-relaxation-time lattice Boltzmann model for simulation of free convection in axisymmetric nanofluid-filled annulus-experimental and numerical observations”, International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 30 No. 2, pp. 934-955, https://doi.org/10.1108/HFF-05-2019-0400.
Hamidreza Khakrah, Payam Hooshmand, M.Y. Abdollahzadeh Jamalabadi, David Ross, (2019), ‘RETRACTED: Numerical modelling of free convection in a symmetrical cone using MRT LB model combined with experimental properties of TiO2-water’, Physica E: Low-dimensional Systems and Nanostructures, Volume 114, 113633, ISSN 1386-9477, https://doi.org/10.1016/j.physe.2019.113633.
Citation
Xiong, Q., Khosravi, A., Nabipour, N., Doranehgard, M.H., Sabaghmoghadam, A. and Ross, D. (2019), "Nanofluid flow and heat transfer due to natural convection in a semi-circle/ellipse annulus using modified lattice Boltzmann method", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 12, pp. 4746-4763. https://doi.org/10.1108/HFF-03-2019-0273
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited