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- Engquist, BjörnUppsala universitet,KTH,Numerisk analys, NA,Institutionen för teknisk databehandling (author)
Radiation boundary conditions for acoustic and elastic wave calculations
- Article/chapterEnglish1979
Publisher, publication year, extent ...
- Wiley,1979
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-90521
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-90521URI
- https://doi.org/10.1002/cpa.3160320303DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-25645URI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- NR 20140805
- A technique for developing radiating boundary conditions for artificial computational boundaries is described and applied to a class of problems typical in exploration seismology involving acoustic and elastic wave equations. First, one considers a constant coefficient scalar wave equation where the artificial boundary is one edge of a rectangular domain. By using continued fraction expansions, a systematic sequence of stable highly absorbing boundary conditions with successively better absorbing properties as the order of the boundary conditions increases is obtained. There follows a systematic derivation of a hierarchy of local radiating boundary conditions for the elastic wave equation. A theoretical procedure to guarantee stability at corners of the rectangular domain is worked out. A technique for fitting the discrete radiating boundary conditions directly to the difference scheme itself is proposed.
Subject headings and genre
- NATURVETENSKAP Data- och informationsvetenskap hsv//swe
- NATURAL SCIENCES Computer and Information Sciences hsv//eng
- NATURVETENSKAP Matematik Beräkningsmatematik hsv//swe
- NATURAL SCIENCES Mathematics Computational Mathematics hsv//eng
- ACOUSTIC PROPAGATION
- BOUNDARY CONDITIONS
- BOUNDARY VALUE PROBLEMS
- ELASTIC WAVES
- RADIATIVE TRANSFER
- SOUND WAVES
- COMPUTER TECHNIQUES
- ERROR ANALYSIS
- FAR FIELDS
- SEISMOLOGY
Added entries (persons, corporate bodies, meetings, titles ...)
- Majda, A (author)
- KTHNumerisk analys, NA (creator_code:org_t)
Related titles
- In:Communications on Pure and Applied Mathematics: Wiley32:3, s. 314-3580010-36401097-0312
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- Royal Institute of Technology
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