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Simulation of Natural Convection in a Triangular Cavity Using the Multi-Relaxation Time Lattice Boltzmann Method: Impact of Heated Chip Position

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Abstract:

This article presents a comprehensive numerical study of natural convection in a water-filled triangular cavity using the multi-relaxation time lattice Boltzmann method (MRT-LBM). The main objective of this study is to thoroughly analyze the influence of the heated chip's position along the left wall and the Rayleigh number on crucial aspects such as isotherms, streamlines, velocity, and temperature profiles, as well as the Nusselt number. In this setup, the hypotenuse wall is kept completely cold, while the other parts of the left wall and the bottom wall are adiabatic. Simulations are conducted for three different positions of the heated chip, with Rayleigh numbers, Ra, set at 103 and 105. The results of these investigations reveal that the heating position plays a crucial role in optimizing control, providing significant implications for various applications. Validation results demonstrate satisfactory agreement with existing literature, reinforcing the robustness and reliability of our numerical approach based on MRT.

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Periodical:

Defect and Diffusion Forum (Volume 448)

Pages:

47-57

DOI:

https://doi.org/10.4028/p-TL5mE3

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Online since:

March 2026

Authors:

Youness Ighris*, Mohsine Qaffou, Jamal Baliti, Ahmed Moussaoui, Youssef El Guennouni, Mohamed Hssikou

Keywords:

Heated Chip, Lattice Boltzmann, MRT, Natural Convection, Triangular Cavity

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] E.F. Kent, Numerical analysis of laminar natural convection in isosceles triangular enclosures, Proc. Inst. Mech. Eng. Part C J. Mech. Eng. Sci. 223 (2009) 1157–1169.

DOI: 10.1243/09544062JMES1122

Google Scholar

[2] K.B. Saleem, A.K. Alshara, Natural convection in a triangular cavity filled with air under the effect of external air stream cooling, Heat Transf. - Asian Res. 48 (2019) 3186–3213.

DOI: 10.1002/htj.21537

Google Scholar

[3] I. Mejri, A. Mahmoudi, M.A. Abbassi, A. Omri, LBM simulation of natural convection in an inclined triangular cavity filled with water, Alexandria Eng. J. 55 (2016) 1385–1394.

DOI: 10.1016/j.aej.2016.03.020

Google Scholar

[4] Y. Elguennouni, M. Hssikou, J. Baliti, M. Alaoui, Numerical study of gas microflow within a triangular lid-driven cavity, Adv. Sci. Technol. Eng. Syst. 5 (2020) 578–591.

DOI: 10.25046/AJ050571

Google Scholar

[5] G. Yesiloz, O. Aydin, Laminar natural convection in right-angled triangular enclosures heated and cooled on adjacent walls, Int. J. Heat Mass Transf. 60 (2013) 365–374.

DOI: 10.1016/j.ijheatmasstransfer.2013.01.009

Google Scholar

[6] H.F. Oztop, Y. Varol, A. Koca, M. Firat, Experimental and numerical analysis of buoyancy-induced flow in inclined triangular enclosures, Int. Commun. Heat Mass Transf. 39 (2012) 1237–1244.

DOI: 10.1016/j.icheatmasstransfer.2012.06.011

Google Scholar

[7] J. Baliti, Y. Elguennouni, M. Hssikou, M. Alaoui, Simulation of natural convection by multirelaxation time lattice Boltzmann method in a triangular enclosure, Fluids 7 (2022).

DOI: 10.3390/fluids7020074

Google Scholar

[8] Y. Elguennouni, M. Hssikou, J. Baliti, M. Alaoui, Cavity inclination effect on convection flow in a triangular geometry, Heat Transf. 52 (2023) 3253–3279.

DOI: 10.1002/htj.22826

Google Scholar

[9] Y. Ighris, M. Qaffou, J. Baliti, Y. Elguennouni, M. Hssikou, Thermal management optimization of natural convection in a triangular chamber: Role of heating positions and ternary hybrid nanofluid, Phys. Fluids 36 (2024).

DOI: 10.1063/5.0226427

Google Scholar

[10] F. Agoujil, Y. Elguennouni, Y. Ighris, J. Baliti, M. Hssikou, Modeling of natural convection by lattice Boltzmann in a partially heated cavity, E3S Web Conf. 469 (2023).

DOI: 10.1051/e3sconf/202346900071

Google Scholar

[11] Y. Ighris, F. Agoujil, Y. ElGuennouni, M. Hssikou, J. Baliti, A. Boumezzough, Y. Bouhouchi, Y. Sadiki, Numerical Investigation of Free Convection in a Water-Filled Cavity with Thermally Active Chips Using the SRT-LBM, in: 2024: p.504–512.

DOI: 10.1007/978-3-031-57022-3_61

Google Scholar

[12] F. Selimefendigil, H.F. Öztop, Mixed convection in a partially heated triangular cavity filled with nanofluid having a partially flexible wall and internal heat generation, J. Taiwan Inst. Chem. Eng. 70 (2017) 168–178.

DOI: 10.1016/j.jtice.2016.10.038

Google Scholar

[13] M. Hssikou, Y. Elguennouni, J. Baliti, M. Alaoui, Heat transfer of gas flow within a partially heated or cooled square cavity, Model. Simul. Eng. 2020 (2020).

DOI: 10.1155/2020/8886682

Google Scholar

[14] Y. Ighris, Y. Bouhouchi, Y. Elguennouni, J. Baliti, M. Hssikou, A. Boumezzough, Numerical study of natural convection in an inclined cavity filled with Al2O3/Cu-H2O nanofluids, Numer. Heat Transf. Part A Appl. 0 (2024) 1–25. https://doi.org/10.1080/10407782. 2024.2314230.

DOI: 10.1080/10407782.2024.2314230

Google Scholar

[15] A.A. Mohamad, Lattice Boltzmann Method: Fundamentals and Engineering Applications with Computer Codes Second Edition, Springer Nature: London, UK, 2019.

Google Scholar

[16] B. El Hadoui, and M. Kaddiri, Double Diffusive Natural Convection with Variable Properties of Nanofluid Using Lattice Boltzmann Method, (2024), p.22–32.

DOI: 10.1007/978-3-031-43934-6_3

Google Scholar