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Low frequency acoustic and electromagnetic scattering
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hariharan, S. I. Maccamy, R. C. |
| Copyright Year | 1983 |
| Description | This paper deals with two classes of problems arising from acoustics and electromagnetics scattering in the low frequency stations. The first class of problem is solving Helmholtz equation with Dirichlet boundary conditions on an arbitrary two dimensional body while the second one is an interior-exterior interface problem with Helmholtz equation in the exterior. Low frequency analysis show that there are two intermediate problems which solve the above problems accurate to 0(k(2) log k) where k is the frequency. These solutions greatly differ from the zero frequency approximations. For the Dirichlet problem numerical examples are shown to verify the theoretical estimates. |
| File Size | 912331 |
| Page Count | 29 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830026389 |
| Archival Resource Key | ark:/13960/t07x1717c |
| Language | English |
| Publisher Date | 1983-08-01 |
| Access Restriction | Open |
| Subject Keyword | Numerical Analysis Helmholtz Vorticity Equation Two Dimensional Bodies Approximation Integral Equations Electromagnetic Scattering Acoustic Scattering Laplace Equation Dirichlet Problem Logarithms Low Frequencies Eddy Currents Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
