Patent ID: 8576666

Claim:
An apparatus for analyzing wall-pressure fluctuation measurements in an acoustic array, said apparatus comprising: a plurality of piezoelectric pressure sensors mounted in streamwise and spanwise directions at a fluid-solid interface of the acoustic array; a general purpose programmable computer responsive to measurements of said sensors with said computer configured to operate under the control of instructions, the instructions when operating providing; a graphical user interface configured to accept data in parametric form and to accept data obtained by the response of the acoustic array and representing a fluid property, boundary layer parameters that define a flow field, a wavenumber and a frequency bandwidth, and semi-empirical constants used in mathematical models for the pressure fluctuations, with said interface configured to manipulate the data to a form suitable for computation, and configured to record the data in non-volatile form, the data recorded in at least one form selected from the group consisting of the parametric form and the form suitable for computation; a computational component configured to accept the data and to compute according to a numerical integration mathematical process, a predicted response of wall pressure spectra of the acoustic array to a user-defined flow field as an output, and configured to record as output data as a result of the computation in non-volatile form; and a display configured to receive as input the predicted response of the acoustic array to the user-defined flow field, and to provide as output the predicted response, wherein the predicted response is provided in at least one manner selected from the group consisting of displaying the output to be viewed, recording the output, and transmitting the output and to provide as output the data obtained by measurement for comparison with the predicted response.