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Numerical Investigation of Convection Heat Transfer in Pipes with Sintered Porous Metal Rings

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Abstract:

Fully developed turbulence single phase convection heat transfer of water in pipes filled with sintered porous metal inner rings or solid inner rings was investigated numerically respectively. Numerical calculations were conducted with the Fluent 6.3 code, using the SST k-ω turbulence model. Comparing to solid-ring turbulator pipes, porous-ring turbulator pipes have better comprehensive heat transfer effect. The maximum PEC for porous-ring turbulator pipes is 4.4 and the PEC of solid-ring turbulator pipes is less than 1. It was also analyzed effect of geometric structures on porous-ring turbulator pipe performance. f/f0 for porous-ring turbulator pipes increases with the increasing of Re while Nu/Nu0 decreases with the increasing of Re ,and PEC decreases with the increasing of Re. With the same Re, if the width of the porous ring is equal to the width of groove, f/f0, Nu/Nu0 increases and PEC decreases with the increasing height of porous ring. When the height of porous ring is constant, the f/f0, Nu/Nu0 and PEC decreases with the increasing height of porous ring under the same Re.

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Periodical:

Applied Mechanics and Materials (Volumes 556-562)

Pages:

4275-4279

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.556-562.4275

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Online since:

May 2014

Authors:

De Zhi Yang*, Meng Long Dong, Xin Wei Lu, Zhao Yao Zhou

Keywords:

Convection Heat Transfer, Numerical Simulation, Porous Metal Rings, Sintered, Turbulence

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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