Date of Award

5-6-2024

Degree Type

Capstone Project

First Advisor

Bahram Nassersharif

Abstract

The scenario is a vertically oriented hydrophone array in the ocean. For the purposes of the research and development completed, the hydrophones are treated as spheres. The issue this project is meant to address is system vibration due to oscillatory drag known as vortex shedding. This vibration of the system creates noise, which is then picked up by the hydrophones, distorting the data. To obtain clean, precise data from the hydrophones it is essential to remove this data distortion. The approach taken with this year’s work was to improve the hydrodynamics of the system to reduce the opportunity for the vortex shedding to take place. A sphere and a cylinder are among the least hydrodynamically efficient geometries, so covers were designed to delay flow transition over both the support cable and of the hydrophones themselves. Each team member produced designs for these covers and the team compared each design, removing those that didn’t stand up to the others until one design for each cover remained. The designs were transferred from paper drawings to CAD (Computer Assisted Design) models and 3-D printed. Once the models were printed, testing was performed in a flow tank where oscillations were measured with point tracking software, verifying the success of the designs.

Comments

Team Name: Hydrophones (Team 15)

Company Sponsor: Raytheon Technologies

Sponsor Representative: Frank Aldrich, Jr.

Document Reference: URI-MCE-CAP-FDR-2024-15

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