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Articles 1 - 3 of 3
Full-Text Articles in Mechanical Engineering
Potential Improvements For Underwater Sound Speed Measurement Devices, Matthieu Bernier
Potential Improvements For Underwater Sound Speed Measurement Devices, Matthieu Bernier
Honors Scholar Theses
Modern sonar systems rely on fast and accurate measurements of the speed of sound in water. Plenty of measurement devices currently exist which are used to gather sound speed measurements in water. They specifically require accurate temperature measurements, as temperature is the most influential factor which affects sound wave speed. Previous research on sound speed properties, a few different examples of sound speed measurement devices, and examples of different types of temperature measurement devices was used along with new research on salinity equations and properties of sound, ocean water, and various existing measurement devices to suggest possible improvements for sound …
A Dynamic Active Noise Control System For Live Music Attenuation, Elliot James Krueger
A Dynamic Active Noise Control System For Live Music Attenuation, Elliot James Krueger
Graduate Research Theses & Dissertations
This thesis proposes a system design that will be suitable for applying active noise control (ANC) effectively to live musical instruments. The design consists of three parts: a signal separation section, an instrument classification section, and the active noise control section. The signal separation section will split up the music signals. The instrument classification section will identify the signals, and the ANC section will attenuate the music signal based on the previous information from the other sections. The two instruments of focus will be the trombone and tuba for their low frequency and ability to be quite loud in a …
Non-Equilibrium Behavior Of Large-Scale Axial Vortex Cores, Robert L. Ash, Irfan R. Zardadkhan
Non-Equilibrium Behavior Of Large-Scale Axial Vortex Cores, Robert L. Ash, Irfan R. Zardadkhan
Mechanical & Aerospace Engineering Faculty Publications
A logical basis for incorporating pressure non-equilibrium and turbulent eddy viscosity in an incompressible vortex model is presented. The infrasonic acoustic source implied in our earlier work has been examined. Finally, this non-equilibrium turbulent vortex core is shown to dissipate mechanical energy more slowly than a Burgers vortex, helping us to explain the persistence of axial vortices in nature. Recent molecular dynamics simulations replicate aspects of this non-equilibrium pressure behavior.