Abstract
In this paper, we present the results obtained from the simulation of particle motion induced by the fluid flow driven by an array of beating artificial cilia inside a micro-channel. A worm-like-chain model is used to simulate the elastic cilia, and the lattice Boltzmann equation is used to compute the fluid flow. We employ a harmonic force at the extreme tip of each cilium to actuate it. Our simulation methods are first validated by applying them to the motion of a single cilium and a freely falling sphere. After validation, we simulate the fluid flow generated by an array of beating cilia and find that a maximum flow rate is achieved at an optimum sperm number. Next, we simulate the motion of a neutrally buoyant spherical particle at this optimum sperm number by tracking the particle motion with a smoothed profile method. We address the effect of the following parameters on the particle velocity: the gap between cilia and particle, the particle size, the cilia density, and the presence of an array of intermediate particles.
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Alapati, S., Che, W.S., Mannoor, M. et al. Simulation by using the lattice Boltzmann method of microscopic particle motion induced by artificial cilia. Journal of the Korean Physical Society 68, 1307–1316 (2016). https://doi.org/10.3938/jkps.68.1307
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DOI: https://doi.org/10.3938/jkps.68.1307