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On the coupling of BEM and FEM for exterior problems for the Helmholtz equation
Author(s):
Ruixia
Li.
Journal:
Math. Comp.
68
(1999),
945-953.
MSC (1991):
Primary 65N38, 65N30, 15A06
Posted:
February 15, 1999
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Abstract:
This paper deals with the coupled procedure of the boundary element method (BEM) and the finite element method (FEM) for the exterior boundary value problems for the Helmholtz equation. A circle is selected as the common boundary on which the integral equation is set up with Fourier expansion. As a result, the exterior problems are transformed into nonlocal boundary value problems in a bounded domain which is treated with FEM, and the normal derivative of the unknown function at the common boundary does not appear. The solvability of the variational equation and the error estimate are also discussed.
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Additional Information:
Ruixia
Li
Affiliation:
Department of Mathematics, East China University of Science and Technology, Shanghai 200237, P.R.China
DOI:
10.1090/S0025-5718-99-01064-9
PII:
S 0025-5718(99)01064-9
Keywords:
BEM,
FEM,
Helmholtz equation,
integral equation,
Fourier expansion,
variational equation
Received by editor(s):
November 21, 1996
Received by editor(s) in revised form:
April 10, 1997 and January 22, 1998
Posted:
February 15, 1999
Copyright of article:
Copyright
1999,
American Mathematical Society
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