Mathematical Modelling of the Flow Structure and Heat Transfer in a Channel with a Porous Insert

Oleg V. Matvienko; Aleksei Bubenchikov; Anastasiya Baigulova

doi:10.4028/www.scientific.net/AMR.1013.257

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Mathematical Modelling of the Flow Structure and Heat Transfer in a Channel with a Porous Insert
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1013Mathematical Modelling of the Flow Structure and...

Mathematical Modelling of the Flow Structure and Heat Transfer in a Channel with a Porous Insert

Abstract:

The paper deals with the results of studying the flow structure and heat transfer in a cylindrical channel with a porous insert. While formulating the problem the space-averaged model of interpenetrating continuums was used. The modelled system is described by the equations of continuity, motion and thermal conductivity of a gas phase, as well as the equations of thermal conductivity for a porous backfill. The results of the research show that, due to the displacement of the gas flow from the wall region to the central part of the channel, in the initial flow section a low-temperature area is formed at the inner boundary of the porous layer. The temperature of the structural frame in the initial flow section also decreases because of its cooling by the flow displaced from the wall. In the downward flow direction heating-up of the structural frame occurs due to heat transfer from the gas flow moving in the axial zone. In addition, the structural frame performs the role of a thermal reservoir and, in turn, heats the gas flow in the porous layer.

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Periodical:

Advanced Materials Research (Volume 1013)

Pages:

257-263

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1013.257

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Online since:

October 2014

Authors:

Oleg V. Matvienko, Aleksei Bubenchikov, Anastasiya Baigulova

Keywords:

Heat Transfer, Numerical Modeling, Porous Media, Swirl Flow, Turbulence

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