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Natural Convection from Two Hot Semi-Circular Cylinder Confined in Cold Circular Cylinder

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Abstract:

Numerical simulations were performed to study the pertinent parameters of natural convection in annular space. The studied geometry consists of two semi-circular cylinders of hot walls confined in cold cavity of circular cross-sectional form. The simulations were done by solving numerically the governing equations via the commercial software ANSYS-CFX. The results showed that this new form of inner cylinders is suitable for insulating applications. The pertinent parameters were selected for this work were: Prandtl number (Pr = 0.71 to 1000) and Rayleigh number (Ra = 103, 104 and 105).

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Periodical:

Defect and Diffusion Forum (Volume 409)

Pages:

58-66

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.409.58

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Online since:

May 2021

Authors:

Mustapha Helmaoui*, Houssem Laidoudi, Abedallah Ghenaim

Keywords:

Heat Transfer, Natural Convection, Numerical Simulation, Semi-Cylinder, Steady Flow

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