Volumetric Velocimetry System for Aquatic Propulsion Analysis
Abstract
The Office of Naval Research recognizes the potential for biological solutions to propulsion to contribute to underwater vehicle des,ign. Jellyfish such as Aurelia aurita are the most energetically efficient metazoan swimmers and emulation of their hydrodynamic eff,iciency has motivated a current project to design a jellyfish profiling float (Phase II MEDUSAE: Tactically Relevant Jellyfish- Insp,ired Profiling Floats, ONR N68335-19-C-0303, M Rufo, Boston Engineering Corporation, and Dr. Yonas Tadesse, U. Texas, Dallas, Progra,m Officer Dr. Thomas M McKenna). The key variables determining the desired hydrodynamic efficiency depend upon vortex interactions, in the fluids surrounding swimming jellyfish. Quantification of these interactions is crucial for translation of biological advanta,ges demonstrated by jellyfish to performance of the jellyfish-profiling float. Current 2D PIV methods have been highly productive bu,t lack the capacity to quantify flows outside the thin illuminated plane ofmeasurement. The requested imaging system for tomographic, particle image velocimetry (Tomo-PIV) and particle tracking velocimetry (Tomo-PTV), will enable simultaneous flow measurements thro,ughout the full 3D volume surrounding a swimming organism or vehicle. This information is necessary to determine forces and torques,acting on structures (animals or vehicles) moving through fluids. This knowledge will be applied immediately to the jellyfish profil,ing float project and, more broadly, contribute to future projects involving fluid-structure hydrodynamics and vehicle design. These, capabilities will contribute to ongoing collaborations with undergraduate and graduate students as well as postdoctoral investigato,rs and research colleagues who regularly work in my laboratory at Providence College, RI and the Marine Biological Laboratory in Woo,ds Hole, MA.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 01, 2022
- Source ID
- N000142212277
Entities
People
- John H Costello
Organizations
- Office of Naval Research
- Providence College
- United States Navy