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The modeling and simulation of fish-like swimming is of interest in life sciences as well as in engineering applications.Understanding the mechanics of swimming can help in clarifying some aspects of the biological evolution and of the physiology of aquatic organisms.In engineering the study and optimization of aquatic locomotion can improve the design of underwater vehicles having superior maneuvering capabilities.More generally, many other technological applications ranging from the sedimentation of granular flows to the simulation of a maneuvering aircraft can benefit from the efficient modeling of the unsteady interaction between the flow and moving objects.