Source seeking for a Joukowski foil model of fish locomotion

We continue with the study of fish-like underwater source seeking initiated in a companion paper where we considered a three-rigid-link fish model. In this paper we consider a more realistic fish model based on a Joukowski airfoil which has only one degree of freedom in its movement, and thus relies on vortex shedding to move through a perfect fluid. Both the propulsion problem and the source seeking problem are solved by employing the same sinusoidal perturbation input- the flapping of the fish´s tail. The fish converges to the signal source despite being unaware of it´s position, the source´s position, and the spatial distribution of the source.