Analysis of Maneuvering Fish Fin Hydrodynamics Using an Immersed Boundary Method
نویسندگان
چکیده
A thorough understanding of the pectoral fin hydrodynamics of the bluegill sunfish (Lepomis macrochirus) provides insight that can be applied to the design of propulsors for autonomous underwater vehicles (AUVs). The pectoral fin represents a continuously deforming complex moving boundary problem. For the sunfish, both propulsion and maneuvering are entirely controlled by the pectoral fins. First, the kinematics of the fish fins and body are obtained experimentally through the use of high-speed, high resolution cameras. Then, simulations are carried out using a Cartesian grid based immersed boundary method that can handle unstructured deforming boundaries with the digitized kinematics as input. Here, we present a detailed analysis of the performance of the pectoral fins involved in a turning maneuver.
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