TY - GEN
T1 - Optimal gaits of fish-like swimming
AU - An, Xuanhong
AU - Floryan, Daniel
AU - Rowley, Clarence W.
N1 - Publisher Copyright:
© 2021, American Institute of Aeronautics and Astronautics Inc, AIAA. All Rights Reserved.
PY - 2021
Y1 - 2021
N2 - In this work, we investigate optimal gaits for fish-like swimming. Specifically, we develop and use an efficient adjoint-based optimization algorithm to find the periodic gait that maximizes the average thrust. The optimization algorithm has three components: (1) an immersed boundary DNS solver, which is employed to solve for the flow field and compute the lift and drag on an oscillating 2D plate; (2) an iterative adjoint-based optimizer, formulated to compute the gradient of the objective function with respect to the parameters and obtain the optimal gaits; and (3) a Newton-GMRES solver, which is used to accelerate the calculation of limit cycles. We also carry out a detailed analysis of the optimal gait.
AB - In this work, we investigate optimal gaits for fish-like swimming. Specifically, we develop and use an efficient adjoint-based optimization algorithm to find the periodic gait that maximizes the average thrust. The optimization algorithm has three components: (1) an immersed boundary DNS solver, which is employed to solve for the flow field and compute the lift and drag on an oscillating 2D plate; (2) an iterative adjoint-based optimizer, formulated to compute the gradient of the objective function with respect to the parameters and obtain the optimal gaits; and (3) a Newton-GMRES solver, which is used to accelerate the calculation of limit cycles. We also carry out a detailed analysis of the optimal gait.
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U2 - 10.2514/6.2021-1083
DO - 10.2514/6.2021-1083
M3 - Conference contribution
AN - SCOPUS:85100287765
SN - 9781624106095
T3 - AIAA Scitech 2021 Forum
SP - 1
EP - 11
BT - AIAA Scitech 2021 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
Y2 - 11 January 2021 through 15 January 2021
ER -