Water channel and hydrogen bubble flow visualization for a bionic fin with fin drive 

Bionic fins
Motion generator
CFD simulation of fin movement
Motion generator
Fins movement simulation device
CFD flow visualisation
CFD simulation of fin movement

A special mechanical setup above the flow channel allows both a rotational and a phase shifted translational motion of a bionic fin with a single motor. This allows the movement of the fin in water to be recreated and adjusted.