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Direct Numerical Simulation of an Open-Cell Metallic Foam through Lattice Boltzmann Method

Published online by Cambridge University Press:  14 September 2015

Daniele Chiappini,
Gino Bella,
Alessio Festuccia and
Alessandro Simoncini
Daniele Chiappini*
Affiliation:
University Niccoló Cusano - Department of Mechanical Engineering, Via don Carlo Gnocchi 3, 00166 Rome (RM), Italy
Gino Bella
Affiliation:
University of Rome Tor Vergata - Department of Mechanical Engineering, Via del Politecnico 1, 00133 Rome (RM), Italy
Alessio Festuccia
Affiliation:
University of Rome Tor Vergata - Department of Mechanical Engineering, Via del Politecnico 1, 00133 Rome (RM), Italy
Alessandro Simoncini
Affiliation:
University of Rome Tor Vergata - Department of Mechanical Engineering, Via del Politecnico 1, 00133 Rome (RM), Italy
*
*Corresponding author. Email addresses: daniele.chiappini@unicusano.it (D. Chiappini), bella@uniroma2.it (G. Bella), alessio.festuccia@gmail.com (A. Festuccia), alessandrosimoncini@hotmail.it (A. Simoncini)

Abstract

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In this paper Lattice Boltzmann Method (LBM) has been used in order to perform Direct Numerical Simulation (DNS) for porous media analysis. Among the different configurations of porous media, open cell metallic foams are gaining a key role for a large number of applications, like heat exchangers for high performance cars or aeronautic components as well. Their structure allows improving heat transfer process with fruitful advantages for packaging issues and size reduction. In order to better understand metallic foam capabilities, a random sphere generation code has been implemented and fluid-dynamic simulations have been carried out by means of a kinetic approach. After having defined a computational domain the Reynolds number influence has been studied with the aim of characterizing both pressure drop and friction factor throughout a finite foam volume. In order to validate the proposed model, a comparison analysis with experimental data has been carried out too.

Keywords

47.11.-j47.11.Qr47.15.Rq47.56.+rLBMDNSporous media simulationmetallic foam characterization

Information

Type
Research Article
Information
Communications in Computational Physics , Volume 18 , Issue 3 , September 2015, pp. 707 - 722
Copyright
Copyright © Global-Science Press 2015 

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