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OPEN-CELL METAL FOAM MESH GENERATION FOR LATTICE BOLTZMANN SIMULATIONS

卷 21, 册 5, 2018, pp. 423-439
DOI: 10.1615/JPorMedia.v21.i5.30
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摘要

The aim of this work is to compare two different approaches for describing the elementary cell shape of porous media. The first one is based on random spheres packing into the control volume. The second one is based on the Lord Kelvin cell reconstruction (commonly named tetrakaidecahedron). Additionally, we include a random deformation of the starting cell in order to better represent the material properties. The first approach allows reconstructing a perfectly isotropic mesh. It has demonstrated some shortcomings with highly porous media due to the possible formation of isolated solid volumes. This is still acceptable for fluid-dynamics simulations, but not for thermal ones because these zones do not exchange heat with the others due to the lack of connections. The second method is oriented to thermal simulation but the isotropy is not guaranteed anymore due to the intrinsic cell definition. In this work we add a random cell deformation and we propose a sensitivity analysis of material isotropy to deformation magnitude. In fact, the nodes, which represent the single cell connections, are randomly rearranged along the three coordinates according to a uniform distribution of imposed magnitude. The maximum displacement imposed during random deformation represents a degree of freedom which is systematically analyzed in this paper. All the simulations are carried out by means of an optimized and parallel D3Q19 lattice Boltzmann code. After an initial validation by means of experimental results available in the literature, the results are analyzed in terms of pressure drop through a metal foam portion and compared in terms of average and standard deviation values.

对本文的引用
  1. Chiappini Daniele, A lattice-Boltzmann free surface model for injection moulding of a non-Newtonian fluid, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 378, 2175, 2020. Crossref

  2. Salim Bded Asaad, Performance Simulation for Gas Flow through a Porous Media in Packed bed Columns using CFD, IOP Conference Series: Materials Science and Engineering, 579, 1, 2019. Crossref

  3. Sayyari Mohammad Javad, Ahmadian Mohammad Hassan, Kim Kyung Chun, Three-dimensional condensation in a vertical channel filled with metal foam using a pseudo-potential lattice Boltzmann model, International Journal of Thermal Sciences, 172, 2022. Crossref

  4. Suo Mengshan, Sun Kai, Chen Rui, Che Zhizhao, Zeng Zhen, Li Qifeng, Tao Xingxiao, Wang Tianyou, Oxygen transport in proton exchange membrane fuel cells with metal foam flow fields, Journal of Power Sources, 521, 2022. Crossref

  5. Salimi M.R., Alizadeh-Seresht E., Taeibi-Rahni M., New hybrid finite volume-thermal lattice Boltzmann method, based on multi relaxation time collision operator, International Journal of Heat and Mass Transfer, 138, 2019. Crossref

  6. Wang Bo , Song Tao , Li Jing , Zhang Xuanyi , Hu Rukun , Yang Xiaohu, EFFECT OF SUPERGRAVITY ON MELTING PHASE CHANGE IN METAL FOAM , Journal of Porous Media, 25, 11, 2022. Crossref

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