Acoustic diffraction by a half plane in a viscous medium

1999 ◽  
Vol 106 (4) ◽  
pp. 2289-2289
Author(s):  
Allan D. Pierce ◽  
Raymond J. Nagem ◽  
Mario Zampolli
Keyword(s):  
Half Plane ◽  
Viscous Medium ◽  
Acoustic Diffraction

Acoustic diffraction by a half-plane in a viscous fluid medium

2002 ◽  
Vol 112 (4) ◽  
pp. 1288-1296 ◽  
Author(s):  
Anthony M. J. Davis ◽  
Raymond J. Nagem
Keyword(s):  
Viscous Fluid ◽  
Half Plane ◽  
Fluid Medium ◽  
Acoustic Diffraction

Acoustic diffraction by a disk in a viscous medium

2003 ◽  
Vol 114 (4) ◽  
pp. 2332-2332
Author(s):  
Anthony M. J. Davis ◽  
Raymond J. Nagem
Keyword(s):  
Viscous Medium ◽  
Acoustic Diffraction

30.—Acoustic Diffraction by an Absorbing Semi-infinite Half Plane in a Moving Fluid

1975 ◽  
Vol 72 (4) ◽  
pp. 337-357 ◽  
Author(s):  
A. D. Rawlins
Keyword(s):  
Fluid Flow ◽  
Half Space ◽  
Half Plane ◽  
Line Source ◽  
Subsonic Flow ◽  
Sound Intensity ◽  
Acoustic Diffraction ◽  
Radiated Sound ◽  
Acoustic Instabilities ◽  
Moving Fluid

SynopsisThe diffraction of a line source of sound by an absorbing semi-infinite half plane in the presence of a fluid flow is examined. It is found that the radiated sound intensity, in the half space in which the source is located, can be considerably reduced by a suitable choice of the absorption parameter. For subsonic flow the system exhibits no acoustic instabilities.

Boundary Layer Analysis of Acoustic Diffraction by a Half-Plane in a Viscous Fluid Medium

2001 ◽  
Author(s):  
Raymond J. Nagem ◽  
Guido Sandri
Keyword(s):  
Boundary Layer ◽  
Half Plane ◽  
Multiple Scale ◽  
Fluid Viscosity ◽  
Fluid Medium ◽  
Boundary Layer Approximation ◽  
Incompressible Viscous Flow ◽  
Time Harmonic ◽  
Layer Analysis ◽  
Acoustic Diffraction

Abstract We investigate the effects of fluid viscosity on the diffraction of a time-harmonic acoustic plane wave by a semi-infinite half-plane. A boundary layer approximation based on a multiple scale expansion and the known inviscid diffraction solution is used to derive the velocity field near the surface of the half-plane. The boundary layer approximation is compared to an independent incompressible viscous flow solution that is derived for a small circular region in the neighborhood of the edge of the half-plane.

Exact time-domain solutions for acoustic diffraction by a half plane

1989 ◽  
Vol 10 (2-4) ◽  
pp. 305-330 ◽  
Author(s):  
David R. Dalton ◽  
Matthew J. Yedlin
Keyword(s):  
Half Plane ◽  
Time Domain ◽  
Exact Time ◽  
Acoustic Diffraction

Influence of viscosity on acoustic diffraction by a half plane

1998 ◽  
Vol 104 (3) ◽  
pp. 1753-1753
Author(s):  
Allan D. Pierce ◽  
Mario Zampolli
Keyword(s):  
Half Plane ◽  
Acoustic Diffraction

Exact modeling of acoustic diffraction by a half‐plane

1988 ◽  
Author(s):  
David Dalton ◽  
Matthrew J. Yedlin
Keyword(s):  
Half Plane ◽  
Acoustic Diffraction
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