Cursory and Primitive Comparison of the Signal-To-Noise Ratios of Pressure and Velocity Planar Arrays
Abstract
A cursory and a primitive comparison between the signal-to-noise ratios of pressure and velocity arrays is conducted. The arrays of concern are planar arrays. The noise of special interest is that induced by Turbulent Boundary Layer (TBL). For a given incident pressure, as defined by its spectral density, when comparing an ideal conditioning plate (a rigid boundary) for the pressure array and an ideal conditioning compliance (a pressure release boundary) for the velocity array, the signal-to-noise ratio in the former array is by far superior to that of the latter array. A conditioning compliance that renders the boundary with an inverse fluid loading parameter that is of the order of unity may achieve for a velocity array a signal-to-noise ratio that is on par with that for the pressure array. In this comparison the two corresponding array types are subjected to the same incident spectral density.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1999
- Accession Number
- ADA365007
Entities
People
- Gideon Maidanik
- K. J. Becker
Organizations
- Naval Surface Warfare Center Carderock Division