HR: 17:30h
AN: OS54A-07    [Abstracts]
TI: Energetics of jellyfish locomotion determined from field measurements using a Self- Contained Underwater Velocimetry Apparatus (SCUVA)
AU: * Katija, K
EM: kakani@caltech.edu
AF: California Institute of Technology, Bioengineering and Graduate Aeronautical Laboratories, 1200 E. California Blvd., M/C 205-45, Pasadena, CA 91125, United States
AU: Dabiri, J O
EM: jodabiri@caltech.edu
AF: California Institute of Technology, Bioengineering and Graduate Aeronautical Laboratories, 1200 E. California Blvd., M/C 205-45, Pasadena, CA 91125, United States
AB: We conduct laboratory measurements of the flow fields induced by Aurelia labiata over a range of sizes using the method of digital particle image velocimetry (DPIV). The flow field measurements are used to directly quantify the kinetic energy induced by the swimming motions of individual medusae. This method provides details regarding the temporal evolution of the energetics during a swimming cycle and its scaling with bell diameter. These types of measurements also allow for the determination of propulsive efficiency, which can be used to compare various methods of propulsion, both biological and artificial. We then describe the development and application of a Self-Contained Underwater Velocimetry Apparatus (SCUVA), a device that enables a single SCUBA diver to make DPIV measurements of animal-fluid interactions in the field. Improvements and adjustments made to the original system will be presented, and a comparison between the animal-induced flow fields in the laboratory and in the field will be made.
DE: 4899 General or miscellaneous
SC: Ocean Sciences [OS]
MN: 2007 Fall Meeting