年間 12 号発行
ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508
Indexed in
EXPERIMENTAL STUDIES AND NUMERICAL SIMULATION OF TWO-DIMENSIONAL ALUMINUM METAL FOAMING PROCESS UNDER EXTERNAL FIELD BEFORE SOLIDIFICATION
要約
An improved lattice Boltzmann model is developed to simulate the aluminum foaming process produced with a blowing agent in which gas bubbles expand in the pseudo-plastic aluminum molten matrix. This paper discusses the investigations conducted to achieve an accurate two-dimensional (2D) model of the foaming process and simulation to describe precisely the formation of metallic foams and the expansion phenomenon. The present 2D metallic foam model authorizes enquiry of bubble germination and growth; the expansion process including foam pressure, foam velocity, and foam coalescence; and eventually the evolution of temperature. Finally, the model is validated with a few conditions such as high viscosity compared to a considered pure aluminum molten, gas diffusion, drainage phenomenon; and the numerical results are found to be consistent with the analytical results.
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Zhu Yuxuan, Liu Qiwen, Zhang Ruizhi, Cao Peng, Luo Guoqiang, Yuan Huan, Zhang Jian, Sun Yi, Shen Qiang, Numerical simulation of polymethyl‐methacrylate supercritical fluid foaming process: Bubble growth dynamics, Journal of Applied Polymer Science, 139, 34, 2022. Crossref