Multiphase aluminum A356 foam formationprocess simulation using lattice Boltzmann method

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Abstract

Shan-Chen model is a numerical scheme to simulate multiphase fluid flows using latticeBoltzmann approach. The original Shan-Chen model suffers from inability to accuratelypredict behavior of air bubbles interacting in a non-aqueous fluid. In the present study,we extended the Shan-Chen model to take the effect of the attraction-repulsion barriersamong bubbles in to account. The proposed model corrects the interaction and coalescencecriterion of the original Shan-Chen scheme in order to have a more accurate simulationof bubbles morphology in a metal foam. The model is based on forming a thin film (nar-row channel) between merging bubbles during growth. Rupturing of the film occurs whenan oscillation in velocity and pressure arises inside the channel followed by merging ofthe bubbles. Comparing numerical results obtained from proposed model with metallogra-phy images for aluminum A356 demonstrated a good consistency in mean bubble size andbubbles distribution.

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Barzegari, M., Bayani, H., Mirbagheri, S. M. H., & Shetabivash, H. (2018). Multiphase aluminum A356 foam formationprocess simulation using lattice Boltzmann method. Journal of Materials Research and Technology. https://doi.org/10.1016/j.jmrt.2018.03.010

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