Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Physical Acoustics"”.
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Characterizing The Acoustic Properties Of The Jet Lab At The National Center For Physical Acoustics
… at what frequencies the National Center for Physical Acoustics' Jet Lab Facility is non-anechoic, semi-anechoic, or anechoic. To comply with the guidelines of ISO 3745- 1977, three sources were designed and tested at frequencies from 25 Hz to 16000 Hz. The voltages were acquired at each …
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Experimental Investigation of Transonic Shock Oscillations on NACA 0018 at Incidence
… trisonic wind tunnel at the National Center for Physical Acoustics at the University of Mississippi. Tunnel runs were conducted with the angle of incidence increasing from 0 degrees to 6 degrees at 1 degree increments, while the Mach number was held steady at 0.73. High-speed schlieren images …
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Effects of a Heated Turbulent Boundary Layer on Surface Pressure Fluctuations
… in the wind tunnel that mimics some of the same physical processes associated with the ABL. Experimental data was collected in the 2'x2' square test section low speed wind tunnel at the University of Mississippi's National Center for Physical Acoustics. A 3" tall backward facing step was placed …
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Measurements Of Fluvial Sediments Using A Single-Frequency Acoustic Attenuation System
… that was developed at the National Center for Physical Acoustics (NCPA), located at the University of Mississippi. This field-deployable unit consists of two 20 MHz immersion transducers that are aligned in a "pitch-catch" configuration at a fixed distance of 18 cm. A graphical user interface …
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Topics in diffuse field ultrasonics
Random wave fields that have explored large volumes over long times contain much information. Studying these diffuse fields and extracting the information contained in them are the primary aims of Diffuse Field Theory. When the waves of interest are elastic waves at frequencies above 20kHz, the …