Geodesic
Comparison of nonreflecting boundary conditions as
Matematičeskoe modelirovanie, Tome 19 (2007) no. 8, pp. 55-65

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A gasdynamic problem with an external source of acoustic oscillations is considered. This formulation corresponds to a simplified problem of sound suppression in a liner element. Conditions at the free boundary should generate the incoming wave prescribed and provide leaving of acoustic waves without reflection. Two kinds of nonreflecting boundary conditions-local and nonlocal-are constructed. The both approaches are tested on different options of the problem formulation. 
@article{MM_2007_19_8_a6,
     author = {A. V. Alexandrov and L. W. Dorodnicyn and O. V. Podgornova},
     title = {Comparison of nonreflecting boundary conditions as},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {55--65},
     publisher = {mathdoc},
     volume = {19},
     number = {8},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2007_19_8_a6/}
}
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A. V. Alexandrov; L. W. Dorodnicyn; O. V. Podgornova. Comparison of nonreflecting boundary conditions as. Matematičeskoe modelirovanie, Tome 19 (2007) no. 8, pp. 55-65. http://geodesic.mathdoc.fr/item/MM_2007_19_8_a6/