Simulation of biomimetic traveling-wave micro-pump using a modified immersed boundary–lattice Boltzmann method
| Autor: | Liu Feifei, Wei Shoushui, Ren Xiao-Fei, Wei Changzhi, Wang Shaowei |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanoengineering and Nanosystems. 228:189-198 |
| ISSN: | 2041-3092 1740-3499 |
| Popis: | A biomimetic micro-pump model was constructed in this study based on the hydrodynamics of flagellated bacteria traveling-wave movement in a viscous fluid environment. In order to avoid the complicated force calculation, immersed boundary was introduced into lattice Boltzmann equation as velocity source. This method modified the traditional immersed boundary–lattice Boltzmann method in which immersed boundary was treated as force source. The present modified immersed boundary–lattice Boltzmann method was applied for solving the model, which can improve the computational efficiency and accuracy. The effect of the traveling field produced by the elastomer on the fluid flow was then probed. Numerical-simulation experiments were carried out to discuss the influences of traveling-wave deformations on the pressure distribution and velocity field and also to find out the effects of frequency, amplitude, elastomer’s length, wavelength, the thickness of the elastomer, and kinematic viscosity of the fluid on the flow rate. |
| Databáze: | OpenAIRE |
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