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Computer Simulation fof Flexiblity and Inertial Effects on Self-propelled Swimming Bodies

Faculty Mentor

Dr. Dewei Qi


Chemical and Paper Engineering

Presentation Date


Document Type



In this research, a numerical simulation method is employed to simulate a flapping movement for a flexible slender swimmer in a fluid. Our objective is to study dynamic behaviors of the flapping movement. Fig. 1 shows a sketch of the simulation: the leading edge of the swimming body is swung in the vertical direction to generate a horizontal thrust force, which drives the body itself to cruise in the horizontal direction in a fluid. The simulation is based on a combination of three numerical methods: the Lattice Boltzmann Method (LBM), Lattice Spring Model (LSM), and Immersed Boundary Method (IBM). The results show that two characteristics of the swimmer, flexibility and inertia, affect the swimmer cruising direction and performance. Illustrations are given in this study to explain the underlying mechanism of these phenomena.