Numerical analysis of forced convection heat transfer during fully developed flow in a channel filled with porous medium

• Autorzy: Mitrowski A. , Furmański P.
• Języki publikacji: EN

Abstrakty

EN

The paper presents an analysis of heat transfer in a cylindrical duct filled with porous material in the form of a granular medium. The flow through the porous medium is assumed to be hydrodynamically developed and the porous medium is assumed to have properties variable with the duct radius. The momentum and energy equations for the porous medium were solved numerically and the influence of many factors on the fluid velocity and temperature distributions investigated. Finally, the enhancement of heat transfer from the fluid (flowing through the porous medium) to the duct wall was studied by calculating the heat transfer coefficient (Nusselt number) for the thermally fully developed flow. It was found that the presence of the porous medium in the duct may cause an increase in heat transfer rate by even a hundred of times in comparison to the free fluid flow. This effect of enhancement of heat transfer can be achieved by a proper choise of the medium porosity, solid particles diameter to the tube radius and a ratio of particles to fluid thermal conductivity.

Słowa kluczowe

EN

energy equations; heat transfer; Nusselt number; porous medium

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 1998
• Tom: Vol. 19, no 3/4
• Strony: 39--57
• Opis fizyczny: Bibliogr. 14 poz.,

Twórcy

autor

Mitrowski A.

autor

Furmański P.

• Warsaw University of Technology, Institute of Heat Engineering, ul. Nowowiejska 25, 00-665 Warszawa