Ingard-myers boundary condition
Webbs[30 f TAs LCTAS20 (laulks Lincoln County Tennessee Dioneers VOL. XXI NO.2 June 1992 Jane Warren Waller, Editor 238 Doint Clear Conroe, Texas T7304 (409) 856-5624 …
Ingard-myers boundary condition
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Webbobserved in industrial practice. A systematically regularised boundary condition, to replace the Ingard-Myers condition, is proposed that retains the e ects of a finite h, … WebbIt is shown that, despite of their distinct boundary layers, the selected flow profiles lead to essentially the same impedance results. And also, for the impedance eduction the strict consideration of no-slip shear flow is very consistent with the use of the Ingard-Myers' boundary condition with the uniform flow assumption over the test conditions.
WebbThis Ingard-Myers impedance boundary condition has been extensively used for several decades. Yet, more recently, both experimentally and analytically, this Ingard-Myers boundary condition has been shown to have shortcomings. For instance, Renou & Aur´egan (2010) could not retrieve consistent impedance values using the Ingard … http://perso.univ-lemans.fr/~yauregan/publi/JASMyers.pdf
http://www.diva-portal.org/smash/record.jsf?pid=diva2:1315625 Webb22 dec. 2024 · The Ingard–Myers boundary condition enforces continuity of acoustic displacement across an infinitely thin inviscid boundary layer to the leading order [11]. Even if the liner is locally reacting, so that Z ( ω ) is independent of the wavenumber k , the Ingard–Myers boundary condition shows that the effective impedance Z eff ( ω, k ) is …
Webbimpedance boundary condition when the boundary layer becomes much thinner than an acoustic wavelength. The presently accepted Ingard–Myers boundary condition was originally proposed by Ingard [21] for a plane wall and later generalised by Myers [22] for curved walls. It adopts the point of view of concentrating the vorticity of the
Webb27 apr. 2006 · It is demonstrated that satisfactory results can be obtained using the extended time domain impedance boundary condition based on the correct effective impedances and mean flow profiles. ACKNOWLEDGMENTS The work was supported by NSFC-10472010, ASFC-05C51030, the DFG project group FOR-486 and LiMiT. st michael church in daceyville kingsfordWebbThe boundary condition on the acoustic perturbation velocity at an impermeable surface in a flow is considered for the cases in which the surface generates a sound field by ... st michael church houston texasWebbThe analysis is made using a single mode straightforward method based on transmission coefficients involving the classic Ingard-Myers boundary condition. The multivariate … st michael church in elizabeth paWebbThirdly, we will propose a corrected or regularised “Ingard-Myers” boundary condition, that replaces the boundary layer (like the Ingard-Myers limit) but includes otherwise … st michael church in derby ctWebb2 apr. 2024 · Comparisons are made between the results of impedance eductions with uniform flow and the Ingard–Myers boundary condition, with the one-dimensional (1D) … st michael church in flushingWebb17 feb. 2024 · It is not sufficient to describe the boundary condition by an impedance for a lined and locally reacting duct wall. For a model to account for the entire frequency … st michael church in murrells inletWebbAbstract. The accuracy of the Ingard-Myers boundary condition and a recently proposed modified Ingard-Myers boundary condition is evaluated for use in impedance … st michael church in kyiv