Numerical Analysis on Convective Heat Transfer of water Based Hybrid Nanofluid (Alumina-Copper) In a Horizontal Annulus
DOI:
https://doi.org/10.37934/cfdl.14.9.125132Keywords:
Natural convection, Heat transfer, Horizontal Annulus, Hybrid Nanofluid (alumina copper), Particle concentrationAbstract
Numerical inspection of natural thermally induced flow in horizontal annulus has been carried out. The annulus taken under consideration is the circular annulus. By applying heat flux to the inner tube, the inner wall of the annulus is kept at high temperature and the outer wall of the annulus is maintained at constant low temperature. The numerical simulations were accomplished by varying concentrations of the hybrid nanofluid of a hybrid alumina-copper various for each Rayleigh number (4 x 104 < Ra < 4 x l05). Heat transmission through natural convection using air as convective fluid, in the body of horizontally placed annulus resided between two same hollow cylinders, is calculated. The influence of the Rayleigh number along with particle concentration on heat transmission characteristics, change in fluid flow and effective thermal conductivity of an annulus has been studied. The results showed a proportional rise in the heat transfer performance and effective thermal conductivity with the increasing particle concentration and Rayleigh numbers.
Downloads
References
Khalaf, Samer Mahmood, Akeel Abdullah Mohammed, and Qasim Jabbar Mohammed. 2022. “An Experimental Investigation on Heat Transfer Enhancement in An Annulus With Rotating Outer Cylinder Using Nano Fluids”. Tikrit Journal of Engineering Sciences 29 (2):51-60. https://doi.org/10.25130/tjes.29.2.7.
Bouras, A., M. Djezzar, and C. Ghernoug. "Numerical simulation of natural convection between two elliptical cylinders: influence of Rayleigh number and Prandtl number." Energy Procedia 36 (2013): 788-797. https://doi.org/10.1016/j.egypro.2013.07.091
Shareef, Amer Jameel, Waleed Mohammed Abed, and Ahmed Ali Najeeb. "Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube." AJES 3, no. 2 (2010): 31.
Yu, Zi-Tao, Ya-Cai Hu, Li-Wu Fan, and Ke-Fa Cen. "A parametric study of Prandtl number effects on laminar natural convection heat transfer from a horizontal circular cylinder to its coaxial triangular enclosure." Numerical Heat Transfer, Part A: Applications 58, no. 7 (2010): 564-580. https://doi.org/10.13073/0015-7473-61.2.130
Nada, S. A. "Experimental investigation of natural convection heat transfer in horizontal and inclined annular fluid layers." Heat and mass transfer 44, no. 8 (2008): 929-936. https://doi.org/10.1007/s00231-007-0337-5
Chmaissem, Wassim, Seung Jik Suh, and Michel Daguenet. "Numerical study of the Boussinesq model of natural convection in an annular space: having a horizontal axis bounded by circular and elliptical isothermal cylinders." Applied thermal engineering 22, no. 9 (2002): 1013-1025. https://doi.org/10.1016/S1359-4311(02)00002-9
Yuan, Xing, Fatemeh Tavakkoli, and Kambiz Vafai. "Analysis of natural convection in horizontal concentric annuli of varying inner shape." Numerical Heat Transfer, Part A: Applications 68, no. 11 (2015): 1155-1174. DOI:10.1080/10407782.2015.1032016
Husain, Shahid, M. Altamush Siddiqui, and Suhail Ahmad Khan. "Wall boiling in a vertical annulus: Effect of inlet subcooling and mass flow rate." Numerical Heat Transfer, Part A: Applications 75, no. 11 (2019): 776-793. https://doi.org/10.1080/10407782.2019.1612154
Husain, Shahid, M. Altamush Siddiqui, and Suhail Ahmad Khan. "Visualization of flow patterns of water in open-ended vertical annulus during natural convection flow." Journal of Flow Visualization and Image Processing 26, no. 3 (2019) DOI:10.1007/978-981-15-2647-3_9
Husain, Shahid, Mohammad Altamush Siddiqui, and Suhail Ahmad Khan. "Effect of geometrical parameters on natural convection of water in a narrow annulus." Progress in Nuclear Energy 112 (2019): 146-161. https://doi.org/10.1016/j.pnucene.2018.12.011
Husain, Shahid, Suhail Ahmad Khan, and Mohammad Altamush Siddiqui. "Wall boiling of Al2O3-water nanofluid: Effect of nanoparticle concentration." Progress in Nuclear Energy 133 (2021): 103614. https://doi.org/10.1016/j.pnucene.2020.103614
Usmani, Raheel, F. Hussain, S. A. Khan, N. A. Khan, U. Khan, and S. Husain. "Numerical investigation on natural convection of hybrid nanofluid Al2O3–MWCNT/water inside a vertical annulus." In IOP Conference Series: Materials Science and Engineering, vol. 1146, no. 1, p. 012018. IOP Publishing, 2021. DOI:10.1088/1757-899X/1146/1/012018
Mohammadpour, Javad, Shahid Husain, Fatemeh Salehi, and Ann Lee. "Machine learning regression-CFD models for the nanofluid heat transfer of a microchannel heat sink with double synthetic jets." International Communications in Heat and Mass Transfer 130 (2022): 105808. https://doi.org/10.1016/j.icheatmasstransfer.2021.105808
Husain, Shahid, and M. Altamush Siddiqui. "Experimental and numerical analysis of transient natural convection of water in a high aspect ratio narrow vertical annulus." Progress in Nuclear Energy 106 (2018): 1-10. https://doi:10.1080/10407782.2018.1464315
Mohammadpour, Javad, Fatemeh Salehi, Ann Lee, and Luca Brandt. "Nanofluid heat transfer in a microchannel heat sink with multiple synthetic jets and protrusions." International Journal of Thermal Sciences 179 (2022): 107642. https://doi.org/10.1016/j.ijthermalsci.2022.107642