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- Title
Damped Waves in a Cylinder Shadow.
- Authors
Mironov, M. A.; Urusovskiı, I. A.
- Abstract
The sound field in the region of a deep shadow behind an impedance cylinder is analyzed for the case of plane wave diffraction by the cylinder surface. The main part of the field is represented by a cylindrical wave that has a complex index determined from the boundary conditions and decays with the angular coordinate. An expression for the amplitude of this wave is determined by extracting it from the total field formed in the shadow region. It is demonstrated that this wave approximates more closely the total field behind the cylinder, as compared to the least damped wave in the field representation obtained on the basis of the Watson transform. A way to improve the sound barriers is indicated.
- Subjects
DAMPING of sound waves; ACOUSTIC impedance; ENGINE cylinders -- Vibration
- Publication
Acoustical Physics, 2002, Vol 48, Issue 5, p584
- ISSN
1063-7710
- Publication type
Article
- DOI
10.1134/1.1507203