000013111 001__ 13111
000013111 005__ 20161114160327.0
000013111 04107 $$aeng
000013111 046__ $$k2009-06-22
000013111 100__ $$aGivoli, D.
000013111 24500 $$aHigh-order absorbing boundaries: recent extensions and improvements

000013111 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013111 260__ $$bNational Technical University of Athens, 2009
000013111 506__ $$arestricted
000013111 520__ $$2eng$$aRecently new finite element formulations have been proposed which involve highorder Absorbing Boundary Conditions (ABCs) for the solution of exterior time-dependent wave problems. In the first part of this talk the general subject will be briefly reviewed and the proposed approach will be discussed and contrasted with other approaches, such as the Perfectly Matched Layer (PML). In the second part of the talk the high-order Hagstrom-Warburton (HW) ABCs will be presented, and recent extensions and improvements related to them will be discussed and demonstrated. These include, among other things, the application of the ABCs to stratified and anisotropic media, their use in one-way nesting schemes, and their incorporation in spectral-element schemes. Difficulties that are encountered in extending these ideas to elastic waves will also be discussed.

000013111 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013111 653__ $$aAbsorbing Boundary Conditions, Perfectly Matched Layers, High-Order, Group Velocity, Stability, Anisotropic, Evanescent Waves. Abstract. Recently new finite element formulations have been proposed which involve highorder Absorbing Boundary Conditions (ABCs) for the solution of exterior time-dependent wave problems. In the first part of this talk the general subject will be briefly reviewed and the proposed approach will be discussed and contrasted with other approaches, such as the Perfectly Matched Layer (PML). In the second part of the talk the high-order Hagstrom-Warburton (HW) ABCs will be presented, and recent extensions and improvements related to them will be discussed and demonstrated. These include, among other things, the application of the ABCs to stratified and anisotropic media, their use in one-way nesting schemes, and their incorporation in spectral-element schemes. Difficulties that are encountered in extending these ideas to elastic waves will also be discussed.

000013111 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013111 720__ $$aGivoli, D.$$iHagstrom, T.$$iMar-Or, A.$$iBecache, E.
000013111 8560_ $$ffischerc@itam.cas.cz
000013111 8564_ $$s142185$$uhttps://invenio.itam.cas.cz/record/13111/files/CD148.pdf$$yOriginal version of the author's contribution as presented on CD, section: Computational methods for waves - i (MS).
000013111 962__ $$r13074
000013111 980__ $$aPAPER