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On the use of co-ordinate stretching in the numeral computation of high frequency scattering

โœ Scribed by A. Bayliss

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
502 KB
Volume
60
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

The scattering of the sound of a jet engine by an airplane fuselage is modelled by solving the axially symmetric Helmholtz equation exterior to a long thin ellipsoid. The integral equation method based on the single layer potential formulation is used. A family of coordinate systems on the body is introduced and an algorithm is presented to determine the optimal co-ordinate system. Numerical results verify that the optimal choice enables the solution to be computed with a grid that is coarse relative to the wavelength. .

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