Statistical Inference Method for Liner Impedance Eduction with a Shear Grazing Flow

Validation of a Numerical Method for Determining Liner Impedance

This paper reports the initial results of a test series to evaluate a method for determining the normal incidence impedance of a locally reacting acoustically absorbing liner, located on the lower wall of a duct in a grazing incidence, multi-modal, nonprogressive acoustic wave environment without ow. This initial evaluation is accomplished by testing the methods' ability to converge to the know...

A New Method for Determining Acoustic-Liner Admittance in a Rectangular Duct With Grazing Flow From Experimental Data

Correction to 'On the acoustics of an impedance liner with shear and cross flow', by Campos, Legendre and Sambuc.

Campos, Legendre, and Sambuc [1] derived an acoustic-vortical wave equation for the study of acoustics within a sheared flow U0(y)ex over an acoustic lining with a constant cross flow V0ey through the lining. Unfortunately, their derivation makes inconsistent assumptions, and the resulting wave equation is therefore incorrect. This comment points out the error, and derives a corresponding equat...

statistical inference via empirical bayes approach for stationary and dynamic contingency tables

چکیده ندارد.

Nonlinear asymptotic impedance model for a Helmholtz resonator liner

The usual nonlinear corrections for a Helmholtz resonator type impedance do not seem to be based on a systematic asymptotic solution of the pertaining equations. We aim to present a systematic derivation of a solution of the nonlinear Helmholtz resonator equation, in order to obtain analytically expressions for impedances close to resonance, while including nonlinear effects. The amplitude regi...