CFD simulation of hydrothermal of a nanofluid in a microchannel subjected to a magnetic field

Document Type : English

Authors

1 Faculty of Mechanical and Chemistry Engineering, Jundi-Shapur University of Technology, Dezful, Iran

2 Department of Mechanical Engineering, Jundi-shapur University of Technology, Dezful, Iran

Abstract

In this study, CFD simulation of hydrothermal of a nanofluid in a microchannel under a magnetic field with spherical depressions and protrusions on hot and cold walls is investigated. The effects of increasing Hartman (Ha) and Reynolds numbers (Re) in various volume fraction (φ) are investigated. The governing equation by using single-phase model, finite volume method and SIMPLE algorithm are solved. Also it assumes the flow is laminar, steady-state and incompressible. The simulation are considered in ranges of 10 ≤ Re ≤150, 0 ≤ Ha ≤10, and 0 ≤ φ ≤0.03. The findings illustrate that in a certain Ha number, increasing in Re number and φ cause the Nu number increase. Also in a constant Re number, As the Ha number increases, the mean Nu number increases. Likewise, an increase in φ has enhanced heat transfer in all Re and Ha numbers. In a certain φ, as Ha number and Re number enhance, the Nu number increases. By enhancing thermal conductivity, the heat transfer increases. When Re=150, the percentage increase of heat transfer in φ=0.03 relative to pure fluid is %5.98.

Keywords


[1] Shahsavar, A., Noori, S., Toghraie, D., & Barnoon, P. (2021). Free convection of non‐Newtonian nanofluid flow inside an eccentric annulus from the point of view of first‐law and second‐law of thermodynamics. ZAMM‐Journal of Applied Mathematics and Mechanics/Zeitschrift für Angewandte Mathematik und Mechanik101(5), e202000266.
[2] El-Shorbagy, M. A., Eslami, F., Ibrahim, M., Barnoon, P., Xia, W. F., & Toghraie, D. (2021). Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium. Case Studies in Thermal Engineering25, 100977.
[3] Monfared, R. H., Niknejadi, M., Toghraie, D., & Barnoon, P. (2021). Numerical investigation of swirling flow and heat transfer of a nanofluid in a tube with helical ribs using a two-phase model. Journal of Thermal Analysis and Calorimetry, 1-14.
[4] Barnoon, P., Toghraie, D., Eslami, F., & Mehmandoust, B. (2019). Entropy generation analysis of different nanofluid flows in the space between two concentric horizontal pipes in the presence of magnetic field: single-phase and two-phase approaches. Computers & Mathematics with Applications77(3), 662-692.
[5] Barnoon, P., & Ashkiyan, M. (2020). Magnetic field generation due to the microwaves by an antenna connected to a power supply to destroy damaged tissue in the liver considering heat control. Journal of Magnetism and Magnetic Materials513, 167245.
[6] Barnoon, P., Toghraie, D., Salarnia, M., & Karimipour, A. (2020). Mixed thermomagnetic convection of ferrofluid in a porous cavity equipped with rotating cylinders: LTE and LTNE models. Journal of Thermal Analysis and Calorimetry, 1-40.
[7] Ho, C. J., Chang, C. Y., Cheng, C. Y., Cheng, S. J., Guo, Y. W., Hsu, S. T., & Yan, W. M. (2016). Laminar forced convection effectiveness of Al2O3–water nanofluid flow in a circular tube at various operation temperatures: Effects of temperature-dependent properties. International Journal of Heat and Mass Transfer100, 464-481.
[8] Dehghan, M., Valipour, M. S., & Saedodin, S. (2015). Temperature-dependent conductivity in forced convection of heat exchangers filled with porous media: a perturbation solution. Energy Conversion and Management91, 259-266.
[9] Gravndyan, Q., Akbari, O. A., Toghraie, D., Marzban, A., Mashayekhi, R., Karimi, R., & Pourfattah, F. (2017). The effect of aspect ratios of rib on the heat transfer and laminar water/TiO2 nanofluid flow in a two-dimensional rectangular microchannel. Journal of Molecular Liquids236, 254-265.
[10] Rashidi, M. M., Nasiri, M., Khezerloo, M., & Laraqi, N. (2016). Numerical investigation of magnetic field effect on mixed convection heat transfer of nanofluid in a channel with sinusoidal walls. Journal of Magnetism and Magnetic Materials401, 159-168.
[11] Nouri, R., Gorji-Bandpy, M., & Domiri Ganji, D. (2014). Numerical investigation of magnetic field effect on forced convection heat transfer of nanofluid in a sinusoidal channel. Modares Mechanical Engineering13(14), 43-55.
[12] Ahmadi, A. A., Khodabandeh, E., Moghadasi, H., Malekian, N., Akbari, O. A., & Bahiraei, M. (2018). Numerical study of flow and heat transfer of water-Al2O3 nanofluid inside a channel with an inner cylinder using Eulerian–Lagrangian approach. Journal of Thermal Analysis and Calorimetry132(1), 651-665.
[13] Pak, B. C., & Cho, Y. I. (1998). Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles. Experimental Heat Transfer an International Journal11(2), 151-170.
[14] Xuan, Y., & Roetzel, W. (2000). Conceptions for heat transfer correlation of nanofluids. International Journal of heat and Mass transfer43(19), 3701-3707.
[15] Chon, C. H., Kihm, K. D., Lee, S. P., & Choi, S. U. (2005). Empirical correlation finding the role of temperature and particle size for nanofluid (Al 2 O 3) thermal conductivity enhancement. Applied Physics Letters87(15), 153107.
[16] Brinkman, H. C. (1952). The viscosity of concentrated suspensions and solutions. The Journal of chemical physics20(4), 571-571.
[17] Barnoon, P., Toghraie, D., & Karimipour, A. (2020). Application of rotating circular obstacles in improving ferrofluid heat transfer in an enclosure saturated with porous medium subjected to a magnetic field. Journal of Thermal Analysis and Calorimetry, 1-23.
[18] Barnoon, P., Ashkiyan, M., & Toghraie, D. (2021). Embedding multiple conical vanes inside a circular porous channel filled by two-phase nanofluid to improve thermal performance considering entropy generation. International Communications in Heat and Mass Transfer124, 105209.
[19] Barnoon, P., Toghraie, D., Mehmandoust, B., Fazilati, M. A., & Eftekhari, S. A. (2021). Comprehensive study on hydrogen production via propane steam reforming inside a reactor. Energy Reports7, 929-941.
[20] Karimipour, A., Taghipour, A., & Malvandi, A. (2016). Developing the laminar MHD forced convection flow of water/FMWNT carbon nanotubes in a microchannel imposed the uniform heat flux. Journal of Magnetism and Magnetic Materials419, 420-428.
[21] Barnoon, P., & Bakhshandehfard, F. (2021). Thermal management in biological tissue in order to degrade tissue under local heating process. Case Studies in Thermal Engineering, 101105.