SwePub
Sök i LIBRIS databas

  Extended search

hsv:(NATURVETENSKAP) hsv:(Matematik) hsv:(Beräkningsmatematik)
 

Search: hsv:(NATURVETENSKAP) hsv:(Matematik) hsv:(Beräkningsmatematik) > (1970-1979) > Radiation boundary ...

Radiation boundary conditions for acoustic and elastic wave calculations

Engquist, Björn (author)
Uppsala universitet,KTH,Numerisk analys, NA,Institutionen för teknisk databehandling
Majda, A (author)
 (creator_code:org_t)
Wiley, 1979
1979
English.
In: Communications on Pure and Applied Mathematics. - : Wiley. - 0010-3640 .- 1097-0312. ; 32:3, s. 314-358
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • 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

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)

Keyword

ACOUSTIC PROPAGATION
BOUNDARY CONDITIONS
BOUNDARY VALUE PROBLEMS
ELASTIC WAVES
RADIATIVE TRANSFER
SOUND WAVES
COMPUTER TECHNIQUES
ERROR ANALYSIS
FAR FIELDS
SEISMOLOGY

Publication and Content Type

ref (subject category)
art (subject category)

Find in a library

To the university's database

Find more in SwePub

By the author/editor
Engquist, Björn
Majda, A
About the subject
NATURAL SCIENCES
NATURAL SCIENCES
and Computer and Inf ...
NATURAL SCIENCES
NATURAL SCIENCES
and Mathematics
and Computational Ma ...
Articles in the publication
Communications o ...
By the university
Royal Institute of Technology
Uppsala University

Search outside SwePub

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view