A new domain decomposition method is presented for the exterior Helmholtz problem. The nonlocal Dirichlet-to-Neumann (DtN) map is used as a nonreflecting condition on the outer computational boundary. The computational domain is divided into nonoverlapping subdomains with Sommerfeld-type conditions
A Domain Decomposition Method for the Helmholtz Equation and Related Optimal Control Problems
✍ Scribed by Jean-David Benamou; Bruno Desprès
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 504 KB
- Volume
- 136
- Category
- Article
- ISSN
- 0021-9991
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✦ Synopsis
We present an iterative domain decomposition method to solve the Helmholtz equation and related optimal control problems. The tionally expresses that the control is optimal. This method proof of convergence of this method relies on energy techniques. actually solves at the same time the equations and the This method leads to efficient algorithms for the numerical resoluoptimization problem, whereas classical methods require tion of harmonic wave propagation problems in homogeneous and the iterated resolution of direct and adjoint problems in heterogeneous media.
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