Abstract
An improved implementation of Distributed Lagrange multiplier/fictitious domain method was presented and used to simulate the interactions between two circular particles sedimenting in a two-dimensional channel. The simulation results were verified by comparison with experiments. The results show that the interactions between two particles with different sizes can be described as drafting, kissing, tumbling and separating. Only for small diameter ratio, the two particles will interact undergoing repeated DKT (Drafting, Kissing and Tumbling) process. Otherwise, the two particles will separate after their tumbling. The results also show that, during the interaction process, the motion of the small particle is strongly affected while the large particle, is affected slightly.
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Communicated by LIN Jian-zhong
Project supported by the National Natural Science Foundation of China (No. 10472104) and the Natural Science Foundation of Zhejiang Province Government (No. 101047)
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Xue-ming, S., Yang, L. & Zhao-sheng, Y. Interactions between two sedimenting particles with different sizes. Appl Math Mech 26, 407–414 (2005). https://doi.org/10.1007/BF02440092
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DOI: https://doi.org/10.1007/BF02440092