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dc.contributor.authorNeta, Beny
dc.contributor.authorGivoli, Dan
dc.contributor.authorPatlashenko, Igor
dc.date2003-02
dc.date.accessioned2014-03-12T22:47:59Z
dc.date.available2014-03-12T22:47:59Z
dc.date.issued2003-02
dc.identifier.urihttp://hdl.handle.net/10945/39468
dc.description.abstractA new Finite Element (FE) scheme is proposed for the solution of time-dependent semi- infinite wave-guide problems, in dispersive or non-dispersive media. The semi-infinite do- main is truncated via an artificial boundary B, and a high-order Non-Reflecting Boundary Condition (NRBC), based on the Higdon non-reflecting operators, is developed and applied on B. The new NRBC does not involve any high derivatives beyond second order, but its order of accuracy is as high as one desires. It involves some parameters which are chosen automatically as a pre-process. A C0 semi-discrete FE formulation incorporating this NRBC is constructed for the problem in the finite domain bounded by B. Augmented and split ver- sions of this FE formulation are proposed. The semi-discrete system of equations is solved by the Newmark time-integration scheme. Numerical examples concerning dispersive waves in a semi-infinite wave guide are used to demonstrate the performance of the new method.en_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleFinite Element Analysis of Time-Dependent Semi-Infinite Wave-Guides with High-Order Boundary Treatmenten_US
dc.contributor.departmentApplied Mathematicsen_US
dc.subject.authorWavesen_US
dc.subject.authorHigh-orderen_US
dc.subject.authorArtificial boundaryen_US
dc.subject.authorNon-reflecting boundary conditionen_US
dc.subject.authorFinite elementsen_US
dc.subject.authorHigdonen_US
dc.subject.authorAuxiliary variablesen_US
dc.subject.authorNewmarken_US


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