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Simulation of swimming of a flexible filament using the generalized lattice-spring lattice-Boltzmann method
Tai-Hsien Wu1, Rurng-Sheng Guo2, Guo-Wei He3
1Department of Chemical and Paper Engineering, Western Michigan University, Kalamazoo, MI 49009, USA; Department of Physics National Kaohsiung Normal University, Kaohsiung 82444, Taiwan.
Abstract:
A generalized lattice-spring lattice-Boltzmann model (GLLM) is introduced by adding a three-body force in the traditional lattice-spring model. This method is able to deal with bending deformation of flexible biological bodies in fluids. The interactions between elastic solids and fluid are treated with the immersed boundary-lattice Boltzmann method. GLLM is validated by comparing the present results with the existing theoretical and simulation results. As an application of GLLM, swimming of flagellum in fluid is simulated and propulsive force as a function of driven frequency and fluid structures at various Reynolds numbers 0.15-5.1 are presented in this paper.
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