Integral Equation Method in a Problem on Acoustic Scattering by a Thin Cylindrical Screen with Dirichlet and Impedance Boundary Conditions on Opposite Sides of the Screen

V. Kolybasova () and P. Krutitskii ()
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V. Kolybasova: Keldysh Institute of Applied Mathematics
P. Krutitskii: Keldysh Institute of Applied Mathematics

Chapter 18 in Integral Methods in Science and Engineering, Volume 1, 2010, pp 179-182 from Springer

Abstract: Abstract A problem on scattering acoustic waves by a thin cylindrical screen is studied. In doing so, the Dirichlet condition is specified on one side of the screen, while the impedance boundary condition is specified on the other side of the screen. The solution of the problem is subject to the radiation condition at infinity and to the propagative Helmholtz equation. By using potential theory, the scattering problem is reduced to a system of singular integral equations with additional conditions. By regularization and subsequent transformations, this system is reduced to a vector Fredholm equation of the second kind and index zero. It is proved that the obtained vector Fredholm equation is uniquely solvable. Therefore, the integral representation for a solution of the original scattering problem is obtained.

Date: 2010
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DOI: 10.1007/978-0-8176-4899-2_18

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