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Title: Natural convection heat transfer between an eccentric circular cylinder inside a tilted square enclosure
Authors: Samrout, Ragheb
Advisors: Daaboul, Michel 
Keywords: Natural convection, Square enclosure, Vertical location, Tilted enclosure, eccentric cylinders
Subjects: Heat engineering
Heat transfer
University of Balamand--Dissertations
Dissertations, Academic
Issue Date: 2021
A numerical study of two-dimensional steady natural convection is performed for a uniform heat source applied on the inner circular cylinder in a square air-filled enclosure in which all boundaries are assumed to be isothermal. The developed mathematical model is governed by the Governing equations of continuity, momentum and energy. The effects of vertical cylinder locations and Rayleigh numbers on fluid flow and heat transfer performance are investigated. Rayleigh number is varied from 103 to 106 and the location of the inner cylinder is changed vertically along the centerline of the enclosure from an eccentricity of −0.5 to 0.5 upward and downward, respectively. It is found that at small Rayleigh numbers does not have much influence on the flow field while at high Rayleigh numbers have considerable effect on the flow pattern. In addition, the total average Nusselt number behaves nonlinearly as a function of locations. Results are presented in terms of the streamlines, isotherms, local and average Nusselt numbers. The number, size and formation of the cell strongly depend on the Rayleigh number and the position of the inner circular cylinder. Detailed results of the numerical has been compared with literature ones, and it gives a reliable agreement.
Includes bibliographical references (p. 42-44)
Rights: This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the personal and educational use exceptions must be obtained from the copyright holder
Type: Thesis
Appears in Collections:UOB Theses and Projects

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