Natural convection and radiation in a radial porous fin with variable thermal conductivity

In this study, the effects of radiation and convection heat transfer in a radial porous fin are considered. The geometry considered is that of a rectangular profile fin. The porous fin allows the flow to infiltrate through it and solid-fluid interaction takes place. This study is performed using Darcy’s model to formulate the heat transfer equation. The thermal conductivity is assumed to be a function of temperature. The effects of the natural convection parameter Nc , radiation parameter Nr and thermal conductivity parameter m on the dimensionless temperature distribution and heat transfer rate are discussed. The results suggest that the radiation transfers more heat than a similar model without radiation

FUNDING

This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.

CONFLICT OF INTEREST

The authors declare that they have no conflict of interest.

DATA AVAILABILITY

All data generated or analysed during this study are included in this published article.

REFERENCES (10)

Abu-Hijleh (2003): Enhanced forced convection heat transfer from a cylinder using permeable fins. - ASME J. Heat Transfer, vol.125, pp.804-811.

Google Scholar

Darvishi M.T. (2007): Spectral collocation method and Darvishis preconditionings for Tchebychev-Gauss-Lobatto points. - International Mathematical Forum, vol.2(6), pp.263-272.

Google Scholar

Gorla R.S.R. and Bakier A.Y. (2011): Thermal analysis of natural convection and radiation in porous fins. - Int.

Google Scholar

Commun. Heat Mass Transfer, vol.38, pp.638-645.

Google Scholar

Kiwan S. (2006): Thermal analysis of natural convection in porous fins. - Transport in Porous Media, vol.67, pp.17-29.

Google Scholar

Kundu B. and Bhanja D. (2010): Performance and optimization analysis of a constructal T-shaped fin subject to variable thermal conductivity and convective heat transfer coefficient. - Int. J. Heat Mass Transfer, vol.53 pp.254-267.

Google Scholar

Lorenzini G. and Moretti S. (2007): Numerical analysis on heat removal from Y-shaped fins: efficiency and volume occupied for a new approach to performance optimization. - Int. J. Thermal Science, vol.46, pp.573-579.

Google Scholar

Mobedi M. and Sunden B. (2006): Natural convection heat transfer from a thermal heat source located in a vertical plate fin. - Int. J. Heat Mass Transfer, vol.33, pp.943-950.

Google Scholar

Nguyen A. and Aziz A. (1992): The heat transfer rate from convecting-radiating fins for different profile shapes. - Heat and Mass Transfer, vol.27 pp.67-72.

Google Scholar

10.

Yu L.T. and Chen C.K. (1999): Optimization of circular fins with variable thermal parameters. - J. Franklin Institute, vol.336 pp.77-95.

Google Scholar

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