TY - JOUR
T1 - One-dimensional swimmers in viscous fluids: dynamics, controllability, and existence of optimal controls
Y1 - 2013
A1 - Gianni Dal Maso
A1 - Antonio DeSimone
A1 - Marco Morandotti
AB - In this paper we study a mathematical model of one-dimensional swimmers performing a planar motion while fully immersed in a viscous fluid. The swimmers are assumed to be of small size, and all inertial effects are neglected. Hydrodynamic interactions are treated in a simplified way, using the local drag approximation of resistive force theory. We prove existence and uniqueness of the solution of the equations of motion driven by shape changes of the swimmer. Moreover, we prove a controllability result showing that given any pair of initial and final states, there exists a history of shape changes such that the resulting motion takes the swimmer from the initial to the final state. We give a constructive proof, based on the composition of elementary maneuvers (straightening and its inverse, rotation, translation), each of which represents the solution of an interesting motion planning problem. Finally, we prove the existence of solutions for the optimal control problem of finding, among the histories of shape changes taking the swimmer from an initial to a final state, the one of minimal energetic cost.
PB - SISSA
UR - http://hdl.handle.net/1963/6467
U1 - 6412
U2 - Mathematics
U4 - 1
U5 - MAT/05 ANALISI MATEMATICA
ER -