Mohebbi, Rasul, Abbaszade, Abbas, Varzandeh, Mahsa, Ma, Yuan. (1400). Natural Convection Heat Transfer of Ag-MgO/Water Micropolar Hybrid Nanofluid inside an F-shaped Cavity Equipped by Hot Obstacle. هنرهای کاربردی, 8(2), 139-150. doi: 10.22075/jhmtr.2021.21269.1303
Rasul Mohebbi; Abbas Abbaszade; Mahsa Varzandeh; Yuan Ma. "Natural Convection Heat Transfer of Ag-MgO/Water Micropolar Hybrid Nanofluid inside an F-shaped Cavity Equipped by Hot Obstacle". هنرهای کاربردی, 8, 2, 1400, 139-150. doi: 10.22075/jhmtr.2021.21269.1303
Mohebbi, Rasul, Abbaszade, Abbas, Varzandeh, Mahsa, Ma, Yuan. (1400). 'Natural Convection Heat Transfer of Ag-MgO/Water Micropolar Hybrid Nanofluid inside an F-shaped Cavity Equipped by Hot Obstacle', هنرهای کاربردی, 8(2), pp. 139-150. doi: 10.22075/jhmtr.2021.21269.1303
Mohebbi, Rasul, Abbaszade, Abbas, Varzandeh, Mahsa, Ma, Yuan. Natural Convection Heat Transfer of Ag-MgO/Water Micropolar Hybrid Nanofluid inside an F-shaped Cavity Equipped by Hot Obstacle. هنرهای کاربردی, 1400; 8(2): 139-150. doi: 10.22075/jhmtr.2021.21269.1303

Natural Convection Heat Transfer of Ag-MgO/Water Micropolar Hybrid Nanofluid inside an F-shaped Cavity Equipped by Hot Obstacle

Journal of Heat and Mass Transfer Research
مقاله 1، دوره 8، شماره 2 - شماره پیاپی 16، بهمن 2021، صفحه 139-150    اصل مقاله (2.04 M)
نوع مقاله: Full Length Research Article
شناسه دیجیتال (DOI): 10.22075/jhmtr.2021.21269.1303
نویسندگان
Rasul Mohebbi1؛ Abbas Abbaszade2؛ Mahsa Varzandeh3؛ Yuan Ma* 4
1school of engineering, Damghan university, Damghan, Iran
2School of Engineering, Damghan University, Damghan, Iran
3School of Engineering, Damghan University, Damghan,Iran
42 Shanghai Automotive Wind Tunnel Center, Tongji University, No.4800, Cao’an Road, Shanghai, China, 201804
چکیده
This paper presents a series of numerical simulations of nanofluid natural convection inside an F-shaped enclosure equipped by heat source. A hybrid nanofluid consisting of Ag and MgO nanoparticles and water as base fluid was used. Lattice Boltzmann method (LBM) was applied and the effects of Raleigh number (103 ≤ Ra ≤ 106), solid volume fraction of nanoparticle (0 ≤ ϕ ≤ 0.02), and heat source location (0 ≤ S ≤ 0.9) on the flow field, distribution of temperature and heat transfer performance were analyzed according to streamlines, isotherms, and profiles of average Nusselt numbers. The results indicated that the average Nusselt number enhances by increasing the ϕ, although the addition of nanoparticles cannot change the flow pattern and the thermal field significantly. At low Ra, the effect of Ra on average Nu is weak. However, for high Ra, the heat transfer increases significantly by increasing the Ra. The position of heat source also affects the average Nu. The S = 0.6 is the best position of the hot obstacle for enhancing the heat transfer and S = 0.9 is the worst choice. This trend cannot be affected by Ra and ϕ.
کلیدواژه‌ها
Nanofluid؛ Hot obstacle؛ Lattice Boltzmann Method؛ Natural convection؛ F shaped cavity
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