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

• Main Authors: Darvishi M.T., Kani F., Gorla R.S.R.
• Format: Article
• Language: English
• Published: Sciendo 2014-02-01
• Series: International Journal of Applied Mechanics and Engineering
• Subjects: porous radial fin; natural convection; radiation; thermal performance; spectral collocation method
• Online Access: https://doi.org/10.2478/ijame-2014-0003

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