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Free convection analysis in a Γ-shaped heat exchanger using lattice Boltzmann method employing second law analysis and heatline visualization

HamidReza KhakRah (Department of Mechanical Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran)
Mehdi Mohammaei (School of Engineering and Science, Sharif University of Technology, International Campus, Kish Island, Kish, Iran)
Payam Hooshmand (Department of Mechanical Engineering, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran)
Navid Bagheri (Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran)
Emad Hasani Malekshah (School of Mathematical Sciences, The University of Adelaide, Adelaide, Australia)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 25 June 2019

Issue publication date: 11 September 2019

99

Abstract

Purpose

The nanofluid flow and heat transfer within a heat exchanger, with different thermal arrangements of internal active bodies, are investigated.

Design/methodology/approach

For the numerical simulations, the lattice Boltzmann method is utilized. The KKL model is used to predict the dynamic viscosity of CuO-water nanofluid. Furthermore, the Brownian method is taken account using this model. The influence of shapes of nanoparticles on the heat transfer performance is considered.

Findings

The results show that the platelet nanoparticles render higher average Nusselt number showing better heat transfer performance. In order to perform comprehensive analysis, the heatline visualization, local and total entropy generation, local and average Nusselt variation are employed.

Originality/value

The originality of this work is carrying out a comprehensive investigation of nanofluid flow and heat transfer during natural convection using lattice Boltzmann method and employing second law analysis and heatline visualization.

Keywords

Acknowledgements

Retraction notice: The publishers of International Journal of Numerical Methods for Heat & Fluid Flow wish to retract the article “Free convection analysis in a Γ-shaped heat exchanger using lattice Boltzmann method employing second law analysis and heatline visualization” by H. KhakRah, M. Mohammaei, P. Hooshmand, N. Bagheri, E. Hasani Malekshah, which appeared in Volume 29, Issue 9, 2019.

It has come to our attention that there are concerns regarding the authorship of the paper and that the peer review process was compromised.

Portions of the article are also taken, without attribution, from the following sources:

1. Alireza Rahimi, Aravindhan Surendar, Abbas Kasaeipoor, Payam Hooshmand, Emad Hasani Malekshah, (2018), “Lattice Boltzmann simulation of nanofluid flow and heat transfer in a hollow multi-pipe heat exchanger considering nanoparticles’ shapes”, Powder Technology, Volume 339, https://doi.org/10.1016/j.powtec.2018.08.086.

2. Liu, J.-B., Bayati, M., Abbas, M., Rahimi, A. and Naderi, M. (2019), “Mesoscopic approach for simulating nanofluid flow and heat transfer in a finned multi-pipe heat exchanger”, International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 8, pp. 2822-2839, https://doi.org/10.1108/HFF-11-2018-0625.

3. Rahimi, A., Azarikhah, P., Kasaeipoor, A., Hasani Malekshah, E. and Kolsi, L. (2019), “Lattice Boltzmann simulation of free convection’s hydrothermal aspects in a finned/multi-pipe cavity filled with CuO-water nanofluid”, International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 3, pp. 1058-1078, https://doi.org/10.1108/HFF-07-2018-0349.

4. Rahimi, A., Bakhshi, H., Dehghan Saee, A., Kasaeipoor, A. and Hasani Malekshah, E. (2019), “Lattice Boltzmann method for nanofluid flow and heat transfer in a curve-ended T-shaped heat exchanger”, International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 1, pp. 21-42, https://doi.org/10.1108/HFF-05-2018-0249.

5. Payam Hooshmand, Hassan Kavoosi Balootaki, Mehdi Mohammaei, Navid Bagheri, Emad Hasani Malekshah, (2019), “Numerical modeling of nanofluid flow and heat transfer in a quartered gearwheel-shaped heat exchanger using FVM”, Chinese Journal of Physics, Volume 59, https://doi.org/10.1016/j.cjph.2019.04.013.

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

KhakRah, H., Mohammaei, M., Hooshmand, P., Bagheri, N. and Hasani Malekshah, E. (2019), "Free convection analysis in a Γ-shaped heat exchanger using lattice Boltzmann method employing second law analysis and heatline visualization", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 9, pp. 3056-3074. https://doi.org/10.1108/HFF-12-2018-0767

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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