Abstract
Earlier investigations in the USNA high-speed tow tank, using a 4.5-ft towed model, had shown that large amplitude resonant oscillations can be produced by flow over a wall cavity immersed in water. For this case, it was found that critical speed is predictable from a Strouhal number formula derived for resonant cavity oscillations in air. Currently, an attempt to measure radiation from an underwater resonating cavity is being made, using the same towed model. Since “waveguide” cutoff of the tow tank is above oscillation frequency, it has been necessary to perform the measurements in deeper water. For this purpose a 17-ft catamaran has been adapted for use as a towing platform to make it possible to take measurements in Chesapeake Bay. A YP class vessel, equipped for oceanographic research, is used for towing and for recording data. For speeds up to 10 kn, f11 and f12 modes have been detected at the expected speeds. Current results for amplitude and radiation will be described.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
