Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
500589 | Computer Methods in Applied Mechanics and Engineering | 2006 | 44 Pages |
Abstract
The computation of exterior wave problems at low wave numbers can become prohibitively expensive when higher circumferential modes are significant, yet local absorbing boundary conditions specified on simple shapes provide satisfactory performance for most scattering problems. An analysis of the effect of wave number and eccentricity on scattering problems, with local absorbing boundary conditions specified on an ellipse and a prolate spheroid as on-surface radiation conditions, shows that at moderate values of eccentricity, good performance extends to relatively low wave numbers. Excessive computational cost may be avoided for many practical applications.
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Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
Robert C. Reiner Jr., Rabia Djellouli, Isaac Harari,