COMPARISON OF LOCAL RADIATION BOUNDARY CONDITIONS FOR THE SCALAR HELMHOLTZ EQUATION WITH GENERAL BOUNDARY SHAPESy
نویسندگان
چکیده
| The relative accuracy of several local radiation boundary conditions based on the second-order Bayliss{Turkel condition are evaluated. These boundary conditions permit the approximate solution of the scalar Helmholtz equation in an in nite domain using traditional nite element and nite di erence techniques. Unlike the standard BaylissTurkel condition, the generalizations considered here are applicable to non-circular solution domains. The accuracy of these conditions are investigated for elliptical and linear/circular boundaries.
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