International Research Journal of Innovations in Engineering and Technology - IRJIET International Open Access, Monthly, Peer Reviewed, Reputed Journal ISSN (online): 2581-3048

Impact Factor (2025): 6.9

DOI Prefix: 10.47001/IRJIET

Mixed Convection of Heat Transfer around Rotating Cylinders inside Enclosure Filled with Nano Fluid

Abstract

Mixed convection of heat transfer in 2D-square enclosure with an inner two rotating solid circular cylinder had been investigated numerically, the domain between the enclosure walls and cylinders is filled with (Cu-Water) nano fluid. For numerical computational, the dimensionless governing equations were modeled and formulated based on the Galerkin Finite Element Methods. All walls of the enclosure were insulated while the right cylinder was kept at constant hot temperature and the other left cylinder was kept at constant cold temperature. The current study examines the effect of the cylinders angular rotational speed between (0 and -10000), cylinders diameter (0.2, 0.3, and 0.4), Richardson number (0.1 and 10), and the volume fraction of the nano particle (0 to 0.6). The results have been shown in term of isotherm lines, stream function, average Nusselt number, and offered graphically. The results showed that the temperature gradient , intensity of flow and average Nusselt number increases with increase of angular rotational speed, the diameter, and the volume fraction of the nanoparticle whereas it decreases with an increase in Richardson number. The enhancement of the average Nusselt number increase with increase of rotating speed, concentration of nanoparticle and cylinder diameter with ratio of (75.17%), (3.37%) and (73.25%) respectively. While the average Nusselt number decreased with increase in Richardson number with ratio of (13.37%).

Country : Iraq

1 Farhan A.I.2 Ziad M.Al-Makhyoul

  1. Department of Mechanical Engineering, University of Mosul, Iraq
  2. Department of Mechanical Engineering, University of Mosul, Iraq

IRJIET, Volume 5, Issue 10, October 2021 pp. 51-64

doi.org/10.47001/IRJIET/2021.510010

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